What Is a Ball Valve

The Ball valve is arguably the most used and popular. And there are good enough reasons behind this. People love to use it because of its variety of unique types and benefits. You may see or use them daily in different applications but never recognize them. Read on to learn everything about ball valves.

The Ball valve is a mechanical device used to control and direct the flow of various substances. In other words, it is a valve with a ball with a hole at its center that can open, close, and direct the media flow. It controls the flow with a lever and the rotation of the ball. The water bibcock (lever-type) in your house or garden is the best example of a ball valve.

From Mako Products – Superlok TV

Types Of Ball Valve

Brass Ball valves come in a variety of types with unique features. These types are made depending on many criteria, such as:

Body Construction: 1-piece, 2-piece, and 3-piece body. Here, body pieces define the number of body sections the valve has. For example, a 3-piece ball valve has two pipe connectors and the main body.

A number of ports: 2 and 3. The standard type is 2 ports, 1 inlet, and 1 outlet. But the 3 port design allows you to use 2 ports as inlet and 1 as outlet or vice-versa.

Ball Hole Size: Full bore, Reduced bore, and V-shaped. The diameter of a full-bore valve equals the pipe’s diameter. The reduced bore valve has a smaller hole than the pipe hole. And as the name implies, the ball of the V-shaped valve has a V-shaped design hole.

Ball Design: Floating and Trunnion Mounted. The ball floats inside of the valve in a floating ball valve. And the Trunnion is similar to the floating one but with spring-loaded seats.

Operation: Manual and Electric or Motorized. Most of the ball valves are operated manually. However, new types of electrical components are available that can be used automatically.

Ball Access: Side-entry and Top-entry. The entry direction specifies which side you can access the interior of the valve.

From SupplyHouse.com

Ball Valve Parts

A ball valve is made with different types of small components. Here is a summary of regular-type ball valve parts:

Firstly, you will notice a flattened Handle attached to the valve when you look at it. But sometimes, you will see a spinning handle instead of that sliding handle. The handle has a Nut with a Thrust Washer on the above. These two help to tighten the handle with the valve. Secondly, right underneath the handle, there is a Gland Nut. The gland nut ensures the watertight seal to prevent leakage while the system is on.

In addition, a metal rod named Steam connects the upper mechanism with the Rotary Ball inside the valve. The rotary ball is a round steel ball with a bore (hole) inside. It’s on the right in the middle of the valve body, while the two O-shaped seats surround it on both sides. You can consider the rest you see outside as the valve body. It has two ends: one is the inlet, and the other is the outlet. That is all a regular-type ball valve consists of. However, only the upper parts have been changed to motorized ones. The electrical component replaces the handle to automate the valve.

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Popular Ball Valve

How Does A Ball Valve Work?

A ball valve manages the flow of the substances and flow direction. The multi-port (3-way) valves can mix multiple media and send it in different directions. It does this with a brass rotary ball. Let’s see how.

It is a straightforward but effective trick. If the valve is closed, the ball hole is set opposite. When you slide the handle from 0 to 90 degrees, it will rotate the ball. Therefore, the ball holes will meet with the inlet and outlet holes. This will create a path for the media to flow. Finally, the media or substances will flow without any interruption.

Again, when you slide the handle in reverse, it will rotate back the ball. After that, the ball hole will move and seal the drain. As a result, the flow will stop. This is how a ball valve works.

Ball Valve Benefits

Ball valves have several distinct advantages over other types of valves. Such as:

  1. It supports almost all types of media and ensures reliable sealing.

2. The structure is simple, so you can easily disassemble and repair it.

3. You can efficiently operate the valve by simply rotating the handle. Also, it offers quick on-off, which is very helpful in case of emergency.

4. Have a low-pressure drop and a reasonable rate of flow capacity.

5. The chances of corrosion or damage are low, so that it will serve you for a long time.

6. Available at low prices.

trunnion mounted ball valve trim

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Drawing of ball valves

Uses

The demand for Ball valves is expanding worldwide due to their various forms and excellent benefits. You can use them anywhere, from your home’s water bibcock to big industrial pipelines. For example, our daily life applications, like washing machines, dishwashers, plumbing systems, and outdoor hoses, use ball valves to control water flow. Also, industries such as oil, natural gas, pharmaceutical, ball valve manufacturing, vehicle wash systems, chemical, automotive, and many others… use ball valves for different purposes.

Above all, you have got a crystal clear idea about ball valves. And if you are about to set up a new application or something related, you will need ball valves. You have many options, but think carefully and choose the one that fits your needs.

Moreover, if you are considering buying and importing ball valves, do not forget the name Plumberstar. We, Plumberstar, are a professional brass valve manufacturer and supplier based in China. We have many other valves that will meet your needs, including high-quality ball valves. Without believing our words, see our products yourself and decide.

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Top Five Chinese Valve Brands

Top Ten Chinese Valve Brands

 

1. Suzhou Neway Valve Co., Ltd. (Brand: Neway)

Suzhou Neway Valve Co., Ltd. was founded in 1997. Neway has more than 200 experienced technical engineers who specialize in valve solutions. We use professional knowledge to help customers review valve specifications, customize and optimize application solutions, troubleshooting, etc.

 

2. China Nuclear Suval Technology Industry Co., Ltd. (Brand: China Nuclear Suval Valve)

The company was founded in 1997. It is a listed joint-stock company founded on the basis of inheriting the main business, brand, quality assurance, technology and management advantages of China National Nuclear Corporation Suzhou Valve Factory. The current registered capital is 20 million RMB 20 million. , Is the first listed company in China’s valve industry and nuclear industry system. Won the honorary title of Jiangsu Famous Brand.

 

3. Sanhua Holding Group Co., Ltd. (Brand: Sanhua)

Sanhua Holding Group Co., Ltd. was established in 1984 in Xinchang, a famous city in eastern Zhejiang, China. It is a large-scale private enterprise integrating scientific research, production, operation and service. The company has successively won the National Quality Award, China Famous Brand, China Well-known Brand, and many other honors and titles. Mr. Zhang Daocai, the founder of Sanhua Business, has also won many honors such as Chinese Master of Business Management and Chinese Outstanding Entrepreneur.

 

4. Zhejiang Chaoda Valve Co., Ltd. (Brand: Chaoda)

Chaoda was founded in 1984. The company is now a national key high-tech enterprise, a backbone enterprise of the Yongjia Pump and Valve Characteristic Industrial Base of the National Torch Program, a member unit of the supply network of Sinopec, CNPC, and CNOOC, a director unit of China General Machinery Industry Association, and China Valve Industry Association Vice-chairman unit, Zhejiang province tax credit AAA grade enterprise, Zhejiang province contract and trustworthy unit, Industrial and Commercial Bank credit AAA grade enterprise, Wenzhou key backbone enterprise, “Chaoda” won the title of Zhejiang Famous Brand and Zhejiang Famous Brand Product.

 

5. STV Valve Technology Group Co., Ltd. (Brand: STV)

STV Valve Technology Group Co., Ltd is a China Valve Company which was founded in 2003 and now their production line extends to a ball valve like a stainless-steel ball valve, a gate valve like a forged steel gate valve, a globe valve, a control valve, a plug valve and a butterfly valve made of carbon steel, stainless steel, duplex stainless steel, and alloy materials. Their goods comply with the current industry standards in compliance with ANSI, ASME, and API.

The products are of guaranteed high quality and fair price, these products have been under the brand name “STV” for the last 10 years. The exposure, popularity, and recognition of the STV brand worldwide have made it possible to rapidly become a well-known trade name that is acknowledged to be one of the leading industrial valve lines sold worldwide.

STV Valve is committed to meeting your needs and providing you with the right valve at the right price. They’ll have a valve that suits your needs and matches your budget. When you buy from STV, you purchase from dedicated professionals who are committed to customer satisfaction.

 

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2025 Top Industrial Valve Manufacturer in China

The industrial valves market in china is projected to report substantial growth in the coming years due to new industrial infrastructure construction ventures, reconstruction and restoration of existing businesses, and extension of the gas pipeline network.

Few factors that market growth depends on are.

  • The oil and gas sector has dominated the market and is expected to witness growth over the next few years due to growing oil and gas operations across the world.
  • Increased demand for automatic valves is expected to be an advantage in the future.
  • Asia-Pacific was the dominant market in the world, with the highest intake from countries such as China and India.
  • Reports suggest that the industrial valve market globally is expected to grow up to US$ 85.19 billion by 2025.

Market these days have a large number of manufacturers and it is quite a task for consumers to select a valve as per their requirements and budget by maintaining proper quality.

If you have the same questions, you’re in the right place. This article provides you with top valve manufacturers in China. We’ve got suppliers of about any sort of valve you need. Read on and pick the best valves for your application.

We are providing a list of suppliers which are best in a selected application by:

  1. Structure i.e., types of the valve by design.
  2. Power i.e., types of the valve by an operation.
  3. Condition i.e., types of the valve by system parameters.
  4. Function i.e., types of the valve as per their use.

 

Classified By Valve Structure.

 

Top Ball Valve manufacturers in China.

Lanzhou High-Pressure Valve Co. Ltd

Established: 1938

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Floating & Trunnion Mounted Ball Valve.

Certification: TS licensing A1, A2, B1, B2, API-6D, CE, ISO9001, ISO14001, OHSAS18001, TUV issued by the API 6FA gate valve, API607 ball valve fireproof test.

Lanzhou High-Pressure Valve Co., Ltd (formerly Lanzhou High-Pressure Valve Factory, short for LZHPV) associated with the Langao Group of companies, was a state-owned company founded in 1938, established as non-public enterprises in 2003 with strong support from the provinces, municipalities, and departments of districts at all levels, LZHPV was only one high-tech company in northwest China combining ‘high & low temp., high pressure, high alloy, large diameter’ valves with teams dedicated for R&D, design, manufacturing, and sales.

LZHPV currently has 178 sets of machinery for the processing center, CNC machine tools and cutting processing, 98 sets of physical and chemical machinery, NDE and PMI machinery, with superb technology, modern management principles and enhanced quality assurance method, LZHPV has established a leading role in the domestic valve industry in technology.

LZHPV invested heavily in the development of high high-pressure high-alloy valve patent industrialization ventures, and the project obtained funding from the National Development and Reform Commission, Ministry of Industry and Information Technology, for key industries and technological transformation.

  

 

Sanhua Valve-Zhejiang Sanhua Co. Ltd

Established: 1984

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Floating & Trunnion Mounted Ball Valve.

Certification: CQC, CE, TUV, UL, VDE, ISO9001, ISO14001, QC080000, ISO10012.

In China, Sanhua is one of the leading producers of reliable and robust ball valves. With more than 30 years of experience in creating control components for automobile, appliance, and HVAC&R industries for major companies.

Sanhua has worked with giant air conditioning and refrigeration firms over the years. These include Mitsubishi, Samsung, Panasonic, Fujitsu, Hitachi, Carrier, York, Daikin, LG, Haier, Midea, and Gree, etc.

The company provides a range of SBV ball valves for industrial air conditioning, freezing or deep-freezing devices, cooling circuits, vacuum pumping, injection of refrigerants, and more.

 

Top Gate Valve Manufacturers in China. 

Sufa Technology Industry Co., Ltd

Established: 1997

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Cast Steel, forged steel, Cryogenic, Slab & Pressure Gate Valve.

Certification: API 6D, API 600, API 602, ISO 9001, ISO 14001 Certifications.

Sufa is one of the leading industrial steel valve manufacturers in China. Their valves are supplied for a wide variety of power generation, chemical and petrochemical, oil and gas, pulp and paper, mining, and shipbuilding applications. They focus on one business, developing, manufacturing, and marketing advanced steel valve technology in a wide variety of styles and sizes. Their products are made according to certain globally agreed specifications such as API, ANSI, DIN BS, AND JIS, and contain different types of valves in various materials.

 

China Yuanda Valve Group Co. Ltd. 

Established: 1994

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Cast Steel, forged steel, Cryogenic & Pressure Gate Valve.

Certification: API 6D, API 600, API 602, ISO 9001, ISO 14001, WRS, EAC Certifications.

Yuanda Valve Group Co., LTD. Used the short 30 years to raise and grow at a pace of 100 times. They are going forward with time, upgrading facilities, elaborately sculpting the brand, concentrating on creating high-end goods, and aggressively reacting to consumer demands with imagination. Every move they make is a breakthrough in the valve industry in China.

In recent years, Yuanda has witnessed an increasing recognition in the engineering and international fields, developed a long-term and stable partnership of cooperation with renowned companies and several transnational groups in areas such as oil, petrochemicals, water conservation, and steel, and has made this vision a reality. Yuanda attaches importance to after-sales services, continues to develop the after-sales service mechanism: Yuanda’s philosophy of service is to remain customer-oriented and provide prompt response and quality services.

 

STV Valve Technology Group Company

Established: 2003

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Cast Steel, forged steel, Stainless steel, Bellow seal & Pressure Gate Valve.

Certification: ANSI, API 602, API 600, ISO 9001, etc.

STV Valve Technology Group Co., Ltd is a China Valve Company which was founded in 2003 and now their production line extends to a ball valve like a stainless-steel ball valve, a gate valve like a forged steel gate valve, a globe valve, a control valve, a plug valve and a butterfly valve made of carbon steel, stainless steel, duplex stainless steel, and alloy materials. Their goods comply with the current industry standards in compliance with ANSI, ASME, and API.

The products are of guaranteed high quality and fair price, these products have been under the brand name “STV” for the last 10 years. The exposure, popularity, and recognition of the STV brand worldwide have made it possible to rapidly become a well-known trade name that is acknowledged to be one of the leading industrial valve lines sold worldwide.

STV Valve is committed to meeting your needs and providing you with the right valve at the right price. They’ll have a valve that suits your needs and matches your budget. When you buy from STV, you purchase from dedicated professionals who are committed to customer satisfaction.

 

 

WELCO Valve Co. Ltd.

Established: 2009

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Swing Check, Lift Check, Dual Plate, Single Check Valve.

Certification: ISO 9001:2008 EN, ISO 9001:2008 CN, EC Certification Etc.

WELCO valve is among the leading manufacturers in China specializing in the design, production, selling and after-sales of industrial valves, such as check valve, butterfly valve, gate valve, globe valve, ball valve, bellow seal valve, pressure seal valve, API 602 forged steel valve, API 603 corrosion-resistant valve, strainer. It comprises two machinery workshops, one assembly workshop, one synthetic finished warehouse, and one semi-finished warehouse.

It has a modernized research and development team for its valve devices. In every move, they strictly comply with ISO9001 procedures. Now the Welco valve co. has the capability to produce high temperature and high-pressure valve series for all forms of the valve.

The organization has complete precision casting molds for internal components, integrated physical and chemical inspection instruments, experimental devices, and research techniques, as well as CAD production skills that ensure our output is always at the highest standard.

  
NTGD Valve Co. Ltd

Established: 2005

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Swing Check, Lift Check, Dual Plate, Single Check Valve.

Certification: ISO9001/ ISO14001/ ISO18001 certified.

NTGD valve is an ISO 9001 certified company who was founded by a team of people with more than 30 years of experience in the supply of industrial valve. During these years NTGD valve has been adapting the media to new technologies. All this has allowed NTGD to provide the finest quality products and services to match the need of their clients.

NTGD Valve considers product quality and customer satisfaction as their highest priority. NTGD valve looks forward to a new client relationship by providing top-quality valves and close cooperation.

Affordable pricing and efficient distribution options make NTGD the top choice among valve manufacturers. NTGD valve specialized in valve supplies, including ball valve, gate valve, globe valve, check valves, strainer, plug valves, and butterfly valves in carbon steel, stainless steel, duplex stainless, and alloy materials. Their products conform to the latest industry standards in accordance with ANSI, ASME, API, and DIN.

 

Top Globe/ Stop Valve Manufacturers in China

Chaoda Valves Group Co. Ltd.

Established: 1984

Business Type: Exporter, OEM Supplier, Manufacturer.

Certification: ISO9001/ ISO14001/ ISO18001, ANSI, API, DIN, JIS & GB certified.

CHAODA Valves Co.Ltd Group. , as of the 16 Vice President Unit Companies of China Valve Industry Association, was established in 1984, with plant facilities area 32566 sq m, 512 machine workers. Items cover Metal-to-metal sealing ball valve, lock valve, cryogenic valve, bellow sealing valve, wafer check valve, high-pressure anti-corrosion control valve, an integrated three-way valve, and other general valves of types ball valve, gate valve, control valve, globe valve, and butterfly valve according to ANSI/API, BS, DIN, JIS, and GB specifications. Those are extensively used in petroleum, pharmaceutical, natural gas, coal chemical, polysilicon, metallurgy, power generation industries.

As a reputable provider of quality and service, CHAODA VALVES has received strong reputations from consumers in Europe, America, Japan, South Korea, Russia, South East Asia, and other countries in the Middle East. CHAODA made revenue of RMB 475 million (equivalent to USD 78 million) in 2013, of which USD 20 million came from the overseas market.

 

Tianjin Dazhan Group Co. Ltd

Established: 1976

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Outside/Inside Screw Stop, Flanged Brass Stop Valve, etc.

Certification: ISO9001/ ISO14001 certified.

TIANJIN DAZHAN GROUP CO., LTD. was founded in 1976. It is a group of companies that facilitates scientific research & development, shipping, domestic sales, and the international market. The local business in the Dazhan industrial region of the Tianjin Jinnan district. It has an occupancy area of 300,000m2 and a building area of 170,000m2. The overall capital shall be RMB500,000,000. Annual sales receipts are over RMB1,000,000,1000.

The company is accredited in compliance with ISO 9001 Quality Framework. It has 56 offices and the goods are well supplied in China. Some products are exported to Korea, the United States, Russia, the countries of Africa and the Middle East, etc.

The key products of the company are low, medium, and high-pressure valves, malleable iron pipe fittings, wire mesh, asphalt, resin, medium and high-end coatings, PP-R pipes and fittings, etc. There are more than 150 series of valves and more than 4000 standards. The material of the valve is cast iron, brass, carbon steel, stainless steel, and plastics, etc. They are commonly used in a range of media such as water, oil, and steam, etc.

 

Beifa Technology Group Co.,LTD

Established: 2011

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Stainless Steel Threaded Globe Valve etc.

Certification: ISO9001/ ISO14001 certified.

Yuzheng Valve ensures stringent production and has a competent distribution staff to ensure prompt and reliable production. Yuzheng has been making high-quality globe valves since 2011.

All of their goods are certified according to ISO9001 & CE. They produce stainless steel globe valves, which are durable, have a limited opening height, and are easy to mount.

Yuzheng globe valves can be used in low, medium, and high-pressure settings. The sealing surface of the valve disk and the valve seat are carefully fitted to avoid leakage.

 

Top Butterfly Valve Manufacturers in China.

Hanyang Industrial Co. Ltd.

Established: 2009

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Wafer Type, Lug Type, Semi Lug Type Butterfly Valve, etc.

Certification: ISO9001/ ISO14001 certified.

Fengcheng Hanyang Industry Co., Ltd is a high-tech business that combines manufacturing, research, and development, distribution, and support. They have 5000 tons of resin castings bonded sand mold production line; it can make the casting surface roughness and size precision raise 2-3 levels. The company also has 15 CNC numerical control machining centers, two CNC machining centers, and supplies of electrostatic spraying machines and equipment from South Korea. They are made of gray cast iron, ductile cast iron, cast steel, pipes, valves, and their accessories, etc.

The goods refer primarily to petroleum, petrochemical, natural gas, metallurgy, power plants, paper mills, food, sewage treatment, and other areas. And we have formed strong cooperative relationships with South Korea, the United States, Europe, and the Middle East, and other producer countries.

They are recognized as China Butterfly Valve Factory and Butterfly Valve Factory, their products are gray cast iron, ductile cast iron, steel casting, valve gearbox, Butterfly Valve, valves, and accessories, etc. The Butterfly Valve refers primarily to petroleum, petrochemical, natural gas, metallurgy, power plants, paper mills, food, sewage treatment, and other areas. They’ve got two of their casting foundries and a CNC machining plant. That the organization will specifically offer the best aggressive price and the best goods.

  
NEWAY Valve

Established: 1997

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Concentric, Double & Triple offset Butterfly Valve, etc.

Certification: API 602, ISO 9001:2008, CETS licensing A1, A2, B1, B2, API-6D, API 603, CE, ISO 9001, ISO 14001, OHSAS 18001, TUV issued by the API 6FA gate valve, API607 ball valve fireproof test.

Neway Valve is one of China’s top makers of butterfly valves. It has a world-class valve plant that covers a comprehensive valve program to satisfy the demands of its customers.

The entire design process of the business is carried out in-house, allowing them to ensure the consistency of their goods. They have their research and development center, three foundries, and a high-end manufacturing and testing facility.

Neway butterfly valves are available in a range of series including the T series for concentric butterfly valves, the TB series for double offset butterfly valves, and the TC series for triple offset butterfly valves. You ought to know the difference between the double butterfly valve offset and the triple offset butterfly valve.

These valves are commonly used in the chemical, nuclear, offshore, oil and gas, refining, and air separation industries. Neway Valve also produces door valves, globe valves, control valves, ball valves, and butterfly valves.

 

Zhuzhou Southern Valve Co. Ltd

Established: 1996

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: Concentric, Double & Triple offset Butterfly Valve, etc.

Certification: ISO 9001, ISO 14001-2004, UKAS, CE, TS

Zhuzhou Southern Valve specializes in providing safety solutions for water delivery and diversion facilities for safety programs. For more than 20 years, the organization has developed productive water source protection system equipment and technologies for water diversion programs.

Zhuzhou is also renowned internationally for having systematic solutions to water hammer issues. They are often known for the development of various water valves with high pressures and large diameters.

The company produces butterfly valves specifically designed for water resources, sewage disposal, installation of water and wastewater facilities, municipal water and drainage systems, commercial water cycles, thermal and hydropower plants.

The firm sells advanced flange, wafer, heavy hammer, and large diameter butterfly valves designed for water treatment.

 

Top Control valve Manufacturers in China

Shanghai Shinjo Pump & Valve Co., Ltd.

Established: 2010

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: Electric, Hydraulic, Pneumatic control valve, etc.

Certification: API fire test inspection, ISO, and CE certificates. Here shows the API 607 fire-safe certificates, ISO 14001:2004 Certification, API 6D Certification,  ISO 9001:2008 Certificate, GB/T 28001-2001 Certification, and CE type-examination certificates.

Shinjo Company is a high-tech company specializing in the manufacture of various industrial valves. Shinjo aims to provide customers with a complete package of industrial valve solutions, focusing on industrial valve production, growth, sales, and services. With their hard work, Shinjo has built an individual, distinctive valve market. Products are commonly used in petroleum, chemical, electrical, shipping, mining, water supply, manufacturing systems, etc. Shinjo products are commonly used in various manufacturing sectors, such as chemical processing, environmental conservation, civil engineering, and metallurgical engineering.

 

Xiamen Dervos Valves Industry Co. Ltd

Established: 2008

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: Electric, Hydraulic, Pneumatic control Valve, etc.

Certification: Certificates of ISO9001, API607, etc.

Xiamen Dervos Valves Industry Co., Ltd is a one-stop industrial valve manufacturer founded in June 2008. They combine R&D, manufacturing, capital integration, and market services into one. For 12 years, they have been dedicated to seeking options for their clients and offering a quality support to both general and specialist valves.

Dervos products cover nearly all forms of the valve in all sectors and can satisfy many basic and finer specifications of their customers. They assume that they have the opportunity to provide their market customers with the most stable product and professional support at a fair price.

The company produces control valve sizes ranging from 1/2′′ to 60′′ and pressure rating varying from ANSI/ASME Class 125 to Class 4500 and UNI PN6 to PN400. Control valves are produced of alloy steel, stainless steel, carbon steel, and more. You will find pneumatic and electrical control valves that fulfill the specifications of industries such as manufacturing, chemical, oil and gas, petrochemical, upstream and offshore, shipbuilding, power plants, water storage, and electricity generation.

 

China Valves Technology (Changsha) Co. Ltd

Established: 1958

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: Steam Control, Three-way Control, Plunger valve, Sleeve control Valve, etc.

Certification: API 6D, API 6D SS, API 6F, ANSI API 607, ISO 9001, ISO 14001, OHSAS18001.

China Valves Technology (Changsha) Co., Ltd. is a major producer of valve systems integrated into the field of research, design, production, selling, and operation in China. They have a really strong executive staff and a technology team. They have a globally recognized business technology hub in the valve sector of China. With a wide range of products, innovative technologies, solid R&D, and manufacturing capabilities, they will offer a holistic fluid solution for all their customers both domestically and abroad.

The company produces high-quality control valves that are used in large and medium-scale ventures in thermal power plants, hydropower, water diversion, metallurgy, irrigation, water, heating, and petrochemical industries, among others.

The organization has a sleeve valve, a vapor control valve, a three-way control valve, a plunger valve, and other advanced control valves. China Valves Technology sells automotive valves to more than 30 countries and regions worldwide.

 

Top Diaphragm Valve Manufacturers in China

Anhui Water Valve and Fitting Co., Ltd.

Established: 2012

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: KB, Weir, Straight, Stainless steel, Pneumatic Diaphragm Valve, etc.

Certification: API600, API602, API609, BS5156, BS1873, API6D, ISO 9001, ISO 14001, etc.

ANWVF is one of China’s leading valve manufacturers that can carry out a full valve program to fulfill the needs and specifications of their customers.

ANWVF valves including ball valves, gate valves, globe valves, diaphragm valves, control valves, plug valves, and butterfly valves, etc. Built from cast iron, carbon steel, stainless steel, duplex stainless steel, and alloy steel. Their goods conform with the current industry norms in line with BS, ANSI, AWWA, API, JIS, DIN, GOST, etc.

Along with several years of foreign industry experience, the ANWVF valve has been sold to more than 50 countries worldwide!

 
Shanghai Shinjo Pump & Valve Co., Ltd.

Established: 2010

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: Pneumatic, Corrosion resistant lined, Cast iron PTFE lined Diaphragm Valve, etc.

Certification: API fire test inspection, ISO, and CE certificates. Here shows the API 607 fire-safe certificates, API 6D Certificate, ISO 14001:2004 Certificate, ISO 9001:2008 Certificate, GB/T 28001-2001 Certificate, and CE type-examination certificates.

Shinjo Company is a high-tech company specializing in the manufacture of various industrial valves. Shinjo aims to provide customers with a complete package of industrial valve solutions, focusing on industrial valve production, growth, sales, and services. With their hard work, Shinjo has built an individual, distinctive valve market. Products are commonly used in petroleum, chemical, electrical, shipping, mining, water supply, manufacturing systems, etc. Shinjo products are commonly used in various manufacturing sectors, such as chemical processing, environmental conservation, civil engineering, and metallurgical engineering.

They include a variety of diaphragm valves including Cast Iron Diaphragm Valve, Ductile Iron Valve, Cast Steel, and Stainless-Steel Diaphragm Valve: Straight Through Type Valve, Weir Type Valve, Flanged Valve, and Threaded Ends Diaphragm Valve, etc. Every diaphragm valve is designed, manufactured, and inspected to API, ASTM, ANSI, JIS, Noise, and BS specifications.

 

Tianjin Exxon Valve Co. Ltd

Established: 2007

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: Handle, Cast Iron, PTFE lined, Stainless Steel, PVC Diaphragm Valve, etc.

Certification: Certificates of ISO9001, API607, etc.

Tianjin Exxon Valve Co., Ltd focuses on the design, development, manufacture, and marketing of a broad variety of valve products primarily used in the water treatment, power generation, upstream oil & gas, petroleum processing, chemical & petrochemical, and paper & pulp industries. They deliver a range of Rubber Lined Concentric Butterfly Valves, PTFE Lined Diaphragm Valves, Resilient Seated Gate Valves, and Soft Seated Dual Plate Search Valves to satisfy your requirements. The organization helps its customers to select the right valve type according to the process requirements and the system needs of the valves.

The company has a registered fund of 128,000,000 RMB and operates robust computer-aided design programs and advanced computer equipment for manufacturing, processing, and testing. They are solely in compliance with the international quality framework standard ISO9001 for manufacturing. Their goods passed the CE quality management system checks.

EXXON valves are highly regarded at home and abroad. Even though there is a heavy rivalry on the market today, EXXON’s steady and productive growth is driven by a management principle that is, guided by science and technology, assured by consistency, adheres to sincerity, and aims for excellent service.

 

Top Safety Valve Manufacturers in China

NEWAY Valve

Established: 1997

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Low Lift, Full Lift, Pilot operated Safety Valve, etc..

Certification: API 602, ISO 9001:2008, CETS licensing A1, A2, B1, B2, API-6D, API 603, CE, ISO 9001, ISO 14001, OHSAS 18001, TUV issued by the API 6FA gate valve, API607 ball valve fireproof test.

Neway Valve is one of China’s top makers of butterfly valves. It has a world-class valve plant that covers a comprehensive valve program to satisfy the demands of its customers.

The entire design process of the business is carried out in-house, allowing them to ensure the consistency of their goods. They have their research and development center, three foundries, and a high-end manufacturing and testing facility.

Neway butterfly valves are available in a range of series including the T series for concentric butterfly valves, the TB series for double offset butterfly valves, and the TC series for triple offset butterfly valves. You ought to know the difference between the double butterfly valve offset and the triple offset valve.

These valves are commonly used in the chemical, nuclear, offshore, oil and gas, refining, and air separation industries. Neway Valve also produces door valves, globe valves, control valves, ball valves, and butterfly valves.

 

Shanghai Valve Factory (SVF) Co.

Established: 1921

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Superheater, Series VIII Spring, Pilot Operated, Bellow Seal Safety Valve, etc.

Certification: ISO9001/ ISO14001, ANSI, API certified.

Shanghai Valve Factory, also known as ShangFa, is one of the largest valve manufacturers in China. It was established in 1921 and has since worked on a variety of different ventures, including state-owned nuclear power plants, the CNPC Group, the Sinopec Group, the CNOOC Group, and other national and foreign projects. The company was the first manufacturer to receive certifications such as API, ISO 9001, TS Manufacturing License, GJB9001B Military Production System Certification, Design & Manufacturing License for Nuclear Pressure Equipment, CSS Marine Valves Manufacturing Approval, ASME Nuclear Committee Accreditation Type N and NPT, and others.

 

Xiamen Landee Industries Co., Ltd

Established: 1994

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: WCB, WCB Screwed, SS PRV, etc.

Certification: ISO9001, ANSI, API certified.

At XIAMEN LANDEE INDUSTRIES CO., LTD. you can find a wide variety of pipes, valves, pipe fittings, connectors, gaskets, and other spares for industrial use-more than 50 types of items available in over 400 sizes and 20 materials, in reality.

Protection Relief Valves manufactured by Landee are the perfect option for your industrial safety valve needs. Landee’s offers Safety Relief Valves in varying sizes, ranging from 2″ to 48.” Landee Pressure Safety Relief Valves are available in various grades, e.g., Cast Iron, Cast Steel, Stainless Steel, and are available in different types of Safety Relief Valves. If you need unique safety valve details, please contact and ask for your safety valve requirements.

 

Top Angle Valve manufacturers in China

Yuhuan B.T.BEST Air-Valve Co. Ltd

Established: 1996

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Compression, CPVC Stop Valve, etc.

Certification: OQS certified.

Yuhuan Air-Valve was founded in 1996 and has since produced a variety of pneumatic valves for various industries. The company is currently headquartered in Yuhuan City, China, and has approximately 150 employees. The pneumatic angle valve is one of the most prominent angle valves in China. It has a high flow rate, low fluid resistance, simple design high life-cycle, and maintenance-free architecture. The valve is ideal for mediums with a gross viscosity of 600 mm2/s and is resistant to extreme temperatures and chemical corrosives.

Pneumatic angle valves can be used in can/bottle filling devices, rubber machines, laundry machines, beer manufacturing, garment industry, chemical industry, soda industry, vacuum technology, high-temperature sterilization, and more. Yuhuan Air-Valve also produces electric ball valves, shuttle valves, solenoid valves, filter valves, sushi valves, etc.

 

SHK Valve Group Co. Ltd

Established: 1921

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Compression, CPVC Stop Valve, etc.

Certification: TS, PED 97/23/EC, ISO9001, GOST-R, TUV, ISO 15848-1, ISO14001, OHSAS18001, etc.

SHK makers of high-end industrial valves using the latest technologies and the latest R&D technology. Their angle valves are used in industries such as petroleum, steel, fertilizer, LNG, chemical, metallurgy, electricity, and more. All SHK goods are accredited TS, PED 97/23/EC, ISO9001, GOST-R, TUV, ISO15848-1, ISO14001, OHSAS18001. SHK valves are specifically built for extreme operating environments such as ultra-high pressure, ultra-high temp., high wear, emergency shut-off, volatile, flammable, high vacuum, anti-dissipation, low noise, and more. The organization has received many awards and qualifications over the years, including China Petrochemical Material Source Industry Participant, China National BlueStar Co., Ltd Nominated Supplier, China Petroleum and Gas Pipeline Bureau Certified Network Supplier, Certification Certificate of Nuclear Power Qin Mountain Qualified Supplier, Sinopec Natural Gas Network Access Licenses, Honoring Contract and Trustco.

 

AMICO Group

Established: 1989

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Compression, CPVC Stop Valve, etc.

Certification: ISO9001, ISO14001, AS3688, AS3718, AS-MP52, CE, UL, KS, etc.

The Amico Group has over 30 years of experience in the automotive valve industry. The company is investing heavily in R&D to create valves that meet the unique needs of the market. They have a reputation for creativity and environmental growth. Amico makes brass angle valves of varying sizes and shapes. The angle valves are available in various finishes and colors. The three-way brass heating right angle valve can withstand a nominal pressure of 1.6MPa. All Amico products are accredited according to ISO9001, ISO14001, AS3688, AS3718, AS-MP52, CE, UL, and KS. They also export their products around the globe with an export commodity quality assurance qualification rate of 100 percent.

 

Top Pinch Valve manufacturers in China

Bofa Valve Co. Ltd

Established: 2010

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Natural rubber Sleeve, Control Pinch Valve, etc.

Certification: API, GOST (ГОСТ), CE, EN, BS, DIN, TS, MSS SP, ISO, etc.

Xiamen’s Bofa Valve Co. Ltd is the largest manufacturer and retailer of a Chinese valve. The business has technical and distribution staff delivering high-quality automotive valves to South East Asia, Russia, Europe, and South America. The company is designing some of the best pinch valves in China. Their ductile iron, cast iron, rubber sleeve pinch valve comes with low maintenance, are cost-effective, and can withstand slurry, abrasive media and corrosive chemicals. It has a 100% full port configuration that means that mediums such as pulp, raw sewage, and cement powder are not trapped in any dead spots or valve cracks. Elastomer sleeve provides resistance to corrosion and abrasion while retaining a viable pressure in the valve. The Bofa Valve Class 150 regulation pinch valve provides precise control over stroke change. The valve can be controlled conveniently so that users can make minor adjustments to the area of control.

 

Landstar Valves

Established: 2012

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Natural rubber Sleeve, Control Pinch Valve, etc.

Certification: API, DIN, ISO, etc.

Landstar is a brand of the group DI XIN VALVE. Before Landstar, DI XIN VALVE focused on producing knife valves and butterfly valves that were primarily used in slurry and water ventures. But in 2012, after Landstar was born, the company began to produce air pinch valves. The pinch valves are available in the PA and PP series and three types of materials, including POM, aluminum alloy, and stainless steel. The distinction between the two series is the form and material of the pinch valves. Landstar’s highlight is its natural rubber sleeve made using a top-secret recipe. This natural rubber sleeve is 1 million times longer than any other on the market. Landstar pinch valves can be used to separate or extract impurity that includes solids, ashes, or some other granules.

 

RESTA Valve China

Established: 1988

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Air Operated, Slurry, Manual Pinch Valve, etc.

Certification: API 6D, API 607, ASTM, GOST, EN, ISO 158481, ISO 9001:2000.

Resta is among the largest maker of valves in China. It consists of two plants, one of which is devoted to the manufacturing of personalized valves such as DBB valves and pinch valves, while the other produces general use valves such as ball and gate valves. Resta air-powered pinch valves shut off the fluid by filling the air gap between the body of the valve and the rubber tubing and deforming the tube. The valve has no leaking or lack of pressure and features a high-quality sleeve that is resistant to abrasion, rust, wear, and fatigue. The firm also sells a manual pinch valve with excellent wear and corrosion resistance and a slurry pinch valve that is ideal for medium including dust, powders, and fibers.

 

Top Needle Valve Manufacturers in China

Nantong NACO Fluid Equipment Co., Ltd

Established: 2008

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: High Pressure, Angle, 3-way needle valve, etc.

Certification: CCS, CE, ABS, etc.

Naco Fluid Equipment Co., Ltd primarily manufactures instrumentation valves and tube fittings. The company is a self-importing company that has the requisite equipment for smooth production processes. Some of them include product selection manuals, CNC precision machining, molded material welding, metal surface treatment, and full testing of finished products. NACO Fluid Machinery manufactures some of the finest needle valves in China. Its valves are commonly used in industries such as nuclear power, chemical, marine engineering, equipment, petroleum, shipbuilding, metallurgy, electrical power, and more.

NACO valves can accommodate high-pressure, high-temperature applications and are resistant to corrosion. The NACO Super High-Pressure Needle Valve can withstand up to 30000psi of pressure. It is constructed with high-quality stainless steel, is manually operated, and can handle temperatures from 0°F to 450°F. It has a port size of 1/8′′-1′′ and can be used for oil, coal, water, and other media.

 

Shanghai KS Flow Control Equipment Co. Ltd

Established: 1984

Business Type: Exporter, OEM Supplier, Manufacturer.

Certification: ISO 9001, API 6D, CE, ISO14001, OHSAS18001, API 607, 6FA, API 600, etc.

KS Flow Control has over 30 years of experience in the valve business. They specialize in the production of needle valves that can be used in gasoline, natural gas, polysilicon, electrical, petrochemical, coal chemical, metallurgy, and other industries. The needle valves will act with oil, water, gas, and other non-corrosive media at temperatures between-20°C and +440°C-70°C between-240°C and ≤540°C and ≤570°C. The KS Flow high-pressure needle valve can withstand pressure up to 15000 psi. It has a durable bond-bonnet structure, a back seat shape, a mountable frame, a non-rotating stem tip, and a packing underneath the stem string.

In addition to needle valves, KS Flow Control also produces ball valves, gate valves, globe valves, control valves, and butterfly valves. They appeal to consumers across the world, such as Taiwan, Oman, Europe, and the United States.

 

Jiangsu YDF Valve Co., ltd.

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: High Pressure, Angle, 3-way needle valve, etc.

Certification: API 6d, API 600, API 602, ISO 9001, etc.

Jiangsu YDF Valve Co., ltd is situated in the YDF Industrial Zone, Shangzhuang Town, Yancheng City, Jiangsu Province , China. With a surface area of 21000m3 and a construction area of 7000m3, KOSEN has high technological strength, science, and sound management and advanced facilities, including a new quality detection and testing center, CAD valve design center and thermal operation, chemical analysis, spectrum analysis, metallographic analysis, mechanical performance testing, X-ray flaw detection, ultrasound flaw detection, etc. We still think that new equipment and identification means a lot to our ability to plan, produce and manufacture. Successively, we have received a range of international approvals, including ISO 9001:2000, CE, API 6D-0478, AZ.

 

Top Plug Valve Manufacturers in China

Chaoda Valves Group Co. Ltd.

Established: 1984

Business Type: Exporter, OEM Supplier, Manufacturer.

Valve Types: Lift Plug, American Standard Plug, National Standard Plug Valve, etc.

Certification: ISO9001, ISO14001, OHSAS18001, API6D, CE/PED, API607, API6FA, ISO 15848-1, TS, API 600.

Chaoda is one of the best manufacturers of plug valves in China. It requires a professional R&D staff, sophisticated machinery, and facilities, completely functioning physical & chemical analysis and inspection systems, and a high-tech knowledge processing system to satisfy the needs of its customers. Chaoda’s stainless steel plug valve provides superior sealing efficiency and durability. The valve can be quickly opened and closed by raising, which eliminates any pressure between the body and the seal. The valve is made of carbon steel, stainless steel, alloy steel, duplex stainless steel and can be powered by hand, gear, electrical or pneumatic actuation. It can be used for mediums such as water, tar, acetic acid, carbamide, steam, nitric acid, oxidizing agent, and more.

 

Xiamen Dervos Valves Industry Co. Ltd

Established: 2008

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: RF Plug, Sleeve, Three-way Jacket Plug Valve, etc.

Certification: Certificates of ISO9001, API607, etc.

Dervos Valves are leading the way for high-quality industrial valves in China. As a multinational retailer, Dervos Valves is dedicated to designing and providing valves that satisfy the exact needs of its customers. The plug valve contains an upright pressure plug valve, a jacket plug valve, a 3-and 4-way plug valve, a soft sealing valve style sleeve, an orbit plug valve, and more. The plug valves are simple to control, economical and effective. Dervos’ butt welded plug valve can be made of carbon steel, stainless steel, and alloy steel. It can accommodate a PN16~PN100 pressure range and a working temperature of-29 °C~180 °C. It may be handwheel, magnetic, electrohydraulic, gearbox, pneumatic, and oil-powered actuated.

 

China Valves Technology (Changsha) Co. Ltd

Established: 1958

Business Type: Exporter, Supplier, Manufacturer.

Valve Types: Lift Plug, Sleeve, Three-way Jacket Plug Valve, etc.

Certification: API 6D, API 6D SS, API 6F, ANSI API 607, ISO 9001, ISO 14001, OHSAS18001.

China Valves Technology Co., Ltd is a subsidiary of CVVT. It has a predecessor, the Changsha Valve Factory, which was established in 1958 and was the leading manufacturer of the Chinese valve. It has a declared capital of $10,000,000 and a gross valuation of $25,000,000,000. CSV has more than 5 years of experience working in automotive valve development. They house top-of-the-line production, refining, and research equipment to help them manufacture high-quality automotive valves.

The CSV plug valve is constructed with ductile cast iron and can withstand pressure from 0.6Mpa to 1.6Mpa and a temperature range from-10°C to 80°C. The sealing surface is built of stainless-steel welding technology with strong corrosion resistance. The double eccentric structure provides good sealing quality, low flow resistance, and energy savings. The plug valve is used for flow control in the petrochemical, electrical, steel, municipal, and other industries.

 

Top Strainer & Filter Manufacturer in China

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Best Valve Suppliers in China

Leading Butterfly Valve Supplier of China

STV Valve Technology Group Co., Ltd is one of the top-notch china butterfly valve Supplier. The high-quality industrial butterfly valves we manufacture are hard to find anywhere else. We are the reliable partners of most of our clients as we supply them with the most durable, long-lasting, and cost-effective wholesale triple offset butterfly valves, no matter where they are located. The operating function of this valve is a disk that rotates. We as the verified butterfly valve suppliers china, promise you to provide on-time delivery, with all the required details.

Advantages of Our Supplier Butterfly Valves

STV VALVE is considered the best butterfly valve china manufacturers in the global industry because of the unlimited benefits it offers. These are;

✅ The compact structure of the butterfly valves needs considerably less space.

✅ They offer a tight bubble service.

✅ These valves are light in weight.

✅ They have high-pressured recovery and low-pressure drop..

✅ These are easy and fast to open.

✅ They require less maintenance.

Applications of Butterfly Valve

We are the reliable partners to international traders and acts as one of the top wholesale Butterfly valve suppliers china, provides valves that are highly precise and accurate and work with great efficiency. They are applicable in numerous sectors, including the following:

✅ Cooling water, gases, air, fire protection, circulating water, etc.

✅ Food processing, chemical, and pharmaceutical sectors.

✅ High-temperature and high-pressure water and steam services.

✅ Vacuum services.

✅ Throttling services requiring fewer differential pressures, like in air supply systems or cooling water.

Why Choose Triple Offset Butterfly Valves?

STV is the pioneer in making industrial disk for triple offset butterfly valves. Our valves are customized as per the application. With the superior quality of products, we offer our clients prime services. Our prices are market competitive and better quality in all ways. The valves we manufacture are durable and long-lasting. We meet the international standards of quality and thus the best china butterfly valve manufacturers.

Meet the Top China Industrial Forged Valve Manufacturer

STV Valve Technology Group Co., Ltd is a well-renowned name in the forged valve manufacturer industry. We proudly call ourselves the trendsetters of manufacturing the supreme quality of forged valves China. We, as the leading wholesale forged valve supplier, provide our clients with prime services and high-quality products. The forged valves we manufacture are so efficient in their performance. We manufacture lightweight, forged valves that are easy in handling and install. Its accurate structure ensures the sealing of the valves without any finishing.

Things that make China Forged Valve Supplier the Best in Town

Formen Valve manufactures the most perfect forged valves, which have a huge demand from every corner of the world.

1. The strength of the forged valves provided by China forged valve manufacturers makes them ideal for high-pressure and high-temperature systems.

2. The thickness of the forged valves helps in the reduction of thermal fatigue in between valve operations.

3. Also, the forged valves can be heated and cooled quickly, which allows them to appropriately handle the stresses of systems.

4. The fluid resistance of the forged valve is little.

5. Little external force is required for its opening and closing.

6. Its direction of flow is not limited.

7. The casting process is simple because forged valve manufacturers make a simple design.

Industrial & Commerical Applications of Forged Valves

The forged valves have various applications, especially in pipelines containing high temperatures and pressures like nuclear power plants, coal-fired power plants, petrochemical systems, etc. China Forged valve suppliers also provide them for applications in the water and heat supplying system of urban construction.

Why Choose Us?

STV Valve is a team of professional forged valve makers and reliable exporters. China forged valve manufacturers offer you the most durable products, and the quality is visible from its appearance. We quality check all our products and offer you the most flawless items. We as a leading China forged valve supplier also offers you different customizations according to your requirements at very cost-effective prices. We are the trustful partners of our customers as we never do anything to disappoint them and always meet their requirements.

China Gate Valve Manfacturer with Global Export Expertise

STV Valve Technology Group Co., Ltd excels in manufacturing premium quality wholesale gate valves manufacturer. We are the popular China gate valves suppliers worldwide because of our superior services and high-quality gate valves. Because of the top-quality of our gate valve, it is applicable in a wide range of industrial as well as commercial applications. We manufacture the most durable and robust China gate valve, which is much efficient in its performance. Moreover, we also offer customizations to our customers so that they can get the most benefit from us. Though we are located in China, our services are for everyone in the world as we have followers from every corner of the world. They rely on our products because the best of Gate valve China they attain from us are hard to find anywhere else.

Special Characteristics of Gate Valves

There are several things that make the gate valves of Formen the most exclusive:

  1. The China gate valve has a straight-through type, so the fluid resistance of the valve is small.
  2. The sealing performance of the gate valves is outstanding.
  3. The application range is wide. It could be applied in liquid, steam, and oil media. Also, in media containing granular solid with huge viscosity.
  4. The gate valve features a dual flow direction.

Applications of Industrial & Commercial Gate Valves

STV valve as a Top China Gate valve exporters makes supreme quality China gate valve manufacturers China that make them suitable for several applications like air, fuel gas, steam, feedwater, lube oil, and other systems. These are also suitable for low-temperature and low-pressure systems like fire protection systems as well as water piping distribution systems. Wholesale Gate valve suppliers provide the threaded-end gate valves, which are highly applicable for liquid, air, and gaseous systems.

Get Customized Gate Valve For Your Project!

We are pro in the manufacturing of different types of gate valves, including the custom gate valve and knife gate valve manufacturers in China. We offer you options to customize your own gate valve for your project. First, we get our knife gate valve China trialed under tough conditions and bring them to their best level and international quality standards.

What Is So Special About Our Gate Valves China?

We make the most superior valves that are not found anywhere else. The designs we manufacture suit its functionality. Also, we as the leading gate valves suppliers provide the valves at very economical ranges. We also offer installation and upkeep services to our supreme clients.

The Leading China Check Valve Manufacturer

STV Valve Technology Group Co., Ltd is one of the leading China  check valve suppliers all around the world. We manufacturer the finest quality of safety China check valve that allows liquids and gases to flow in one direction. The axial flow check valves we manufacture are of superior quality and are long-lasting. The efficiency of our supreme hydraulic check valve is visible from its quality. We are popular worldwide not only for the top-quality Check Valves we manufacture but also for our prime trade services globally.

What Makes Us Best Hydraulic Check Valve Manufacturers?

There are numerous advantages of the check valves we deliver to you:

We as the well-reputed Check valve manufacturers in China provide you with self-actuated China check valve that need no external means to actuate the valve either open or close.

1. These are fast-acting.

2. They prevent backflow and maintains pressure precisely.

3. They also serve as a backup system.

4. These check valves can be employed horizontally as well as vertically.

Characteristics of China Check Valve

If you buy such industrial valves from a verified axial flow check valve manufacturer, then you can enjoy the following characteristics:

1. A check valve is also referred to as a non-return valve, retention valve, reflux valve, foot valve, or one-way valve.

2. A check valve is basically a one-way valve, and as the name indicates, it generally permits fluid (gas or liquid) to flow through the valve in a single direction only.

3. Check valves have two-ports, which means that they have two openings in their assembly, one for fluid to invade and the other for fluid to leave.

4. There are myriad types of check valves provided by the Formen that are employed in a great variety of applications in different sectors

5. Check valves are most commonly used for household items.

6. Check valves are very trivial, simple, and cost-effective.

7. These valves function automatically and are not regulated by any personnel or any external control.

8. The structure (outer shells) of most China check valves is made of metal or plastic.

9. A distinctive concept in check valves is their cracking pressure which is the minimum differential upstream pressure between outlet and inlet at which the valve will function.

10. Generally, the check valve is manufactured for and can therefore be specified for a particular cracking pressure.

Uses of Hydraulic Check Valve

Check valves are generally used as a backup in instances a pump fails. It assists the compressors and reciprocating pump’s function, and also when the system pressure surpasses the prime equipment capabilities. These check valves are applicable in various industries such as chemical, refining, petrochemical, etc. So, you must choose the reliable hydraulic check valve supplier for the purchase. Also, the check valves are used in oilfield production, water, steam, refining Petro, and viscous fluids. Check valves are also normally found in waste-water management systems and in production.

We as the top hydraulic check valve manufacturers in China make these top-quality valves, which are suitably applicable in the prevention of oil lines from draining, it blocks oil flow from the accumulator, and it stops the oil flow from the online and the offline pump.

Why Choose Our Manufactured Axial Flow Check Valve?

STV VALVE as a prominent axial flow check valve suppliers provide you with the supreme check valves, which are highly suitable for most applications. We, as the leading hydraulic check valve suppliers and exporters, works day and night to offer you the best products at very economical prices.

 Top China Plug Valve Manufacturers at Wholesale Rates

STV Valve Technology Group Co., Ltd is the leading Plug Valve manufacturer in China. Though we are located in China, our prime services are for all our customers globally, regardless of location. As the best China plug valve supplier, we are popular worldwide because of the top-quality valves and promising services. In China, we manufacture these high-quality plug valves, a quarter-turn revolutionary motion valve. The plug valve employs a cylindrical or tapered plug to start or stop the flow. Our product can be customized as per the industry and customer requirements.

Plug Valves for Different Sectors

The Plug Valve China applies to many industries because of its unlimited benefits. As the leading China plug valve supplier, our products offer the following benefits for various sectors:

1. We provide these valves for low-pressure and low-temperature services. Sometimes, it also exists for high-pressure and high-temperature services.

2. We employ these high-capacity valves for directional flow control even in moderate vacuum systems.

3. We make valves that very efficiently handle fuel, liquid, and gas.

4. These valves, like boiler feed water, condensate, and other elements, efficiently tolerate extreme temperature flow.

5. These valves maintain the flow of liquids comprising suspended solids, such as slurries.

Benefits of the Plug Valve China

STV VALVE is a well-known China plug valve manufacturer, makes the best valves that perform their functions efficiently and effectively. Its benefits are visible from its performance. Out of the endless advantages of the plug valves, some of them are the following:

1. The plug valves have a simple structure with only a few components.

2. These valves close and open very conveniently.

3. The maintenance and repair of the plug valves are very easy and can be done in the area of operation.

4. It features low flow resistance.

5. It offers reliable leak-proof valves.

6. China plug valve suppliers provide these plug valves at very economical wholesale rates.

Easy Trading Options

With over 20 years of experience in this industry, we try every inch hard to satisfy our client’s requirements. We are prominent as the top China plug valve manufacturer globally. We have connections with various shipping agencies, which ease the delivery of products with minimum costs. Our business model is to connect directly with the buyer, which enables us to offer the lowest market rates. Our plug valves in China have high demand in the international market. Quote us for free today

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Cast Steel vs. Forged Steel Globe Valves

Explore the distinctions between Cast Steel Globe Valves and Forged Steel Globe Valves.

Features Cast Steel Globe Valves Forged Steel Globe Valves
Manufacturing Process Made by pouring melted steel into molds. Shaped by pressing solid steel under high pressure.
Strength and Durability Good strength, but less durable under extreme conditions. Superior strength, highly durable for tough jobs.
Pressure Ratings Handles medium pressure effectively. Excellent for high pressure and temperature.
Cost More cost-effective for larger sizes. Higher initial cost due to manufacturing complexity.
Size Options Available in larger sizes and complex shapes. Typically smaller and more compact.
Leakage Prevention Good sealing but may require maintenance. Excellent sealing, minimizes leakage risk.
Applications Used in various industries, including HVAC. Ideal for high-stakes industries like oil and gas.
Maintenance Frequency May require more frequent repairs. Less frequent maintenance needed.
Delivery Time Longer lead times due to manufacturing. Faster delivery due to simpler production.

When picking Cast Steel Globe Valves or forged steel globe valves, how they are made is different. Cast steel valves are made by pouring melted steel into molds. Forged steel valves are shaped by pressing steel with strong force. This affects how strong and long-lasting they are. It also decides where they work best in engineering. Cast Steel Globe Valves are good for bigger sizes and tricky shapes. Choosing the right valve helps your system work well, stay safe, and save money. Knowing these differences helps you choose what fits your needs.

Key Takeaways

  • Learn how they are made: Cast steel valves are made by pouring melted steel into shapes. Forged steel valves are made by pressing solid steel into shape. This changes how strong and durable they are.
  • Pick the right valve: Cast steel valves are cheaper and good for big sizes and medium pressure. Forged steel valves are better for high pressure and heat.
  • Think about upkeep: Forged steel valves last longer and need less fixing. Cast steel valves might break more often and need repairs.
  • Match the valve to the job: Cast steel valves are great for food and drinks. Forged steel valves work best in oil and gas jobs.
  • Compare cost and use: Cast steel valves cost less at first. Forged steel valves cost more but save money later because they last longer and need less care.

Cast Steel Globe Valves

900lb cAST STEEL GLOBE VALVE

900lb cAST STEEL GLOBE VALVE,China 900lb cAST STEEL GLOBE VALVE,STV VALVE 900lb cAST STEEL GLOBE VALVE

Definition and Characteristics

Cast Steel Globe Valves are made by pouring melted steel into molds. This process helps create detailed shapes and larger valve sizes. These valves are strong and work well in medium to high-pressure systems. They are great for controlling flow, which is useful for throttling tasks.

The steel used depends on where the valve is needed. Carbon steel is tough and works for general tasks. Alloy steel is stronger and resists rust, so it’s good for high heat and pressure. Stainless steel doesn’t rust easily and is used in food and medicine industries.

Material Type Properties Applications
Carbon Steel Strong and reliable General-purpose uses
Alloy Steel Stronger and rust-resistant High heat and pressure environments
Stainless Steel Rust-proof and clean Food and medicine industries

Manufacturing Process

To make Cast Steel Globe Valves, steel is melted and poured into molds. After cooling, the solid steel is taken out and shaped with machines. This method creates detailed designs and larger valve bodies. After shaping, the valves are put together, tested, and checked to meet rules like ASME B16.34 and API 600.

Advantages

Cast Steel Globe Valves have many benefits for engineers:

  • Versatility: They come in many sizes and shapes for different needs.
  • Cost-Effectiveness: Making bigger valves with casting costs less than forging.
  • Material Options: Choose carbon, alloy, or stainless steel for your system.
  • Compliance with Standards: They follow rules like ISO 5208 for safety and reliability.
  • Throttling Capability: They control flow well, perfect for throttling tasks

  • Disadvantages

    Even though Cast Steel Globe Valves are useful and affordable, they have some downsides:

    • Pressure Drop: The valve’s design changes the flow path. This adds resistance and lowers pressure, which can reduce system performance.
    • Higher Operating Torque: These valves need a tight seal, especially under high pressure. This means they need more force to operate, making manual or automated control harder.
    • Not Ideal for Slurry Applications: Their complex flow path can trap solids. This makes them less effective for fluids with particles or slurries.

    Note: Knowing these issues helps you decide if these valves suit your system.

    Common Applications

    Cast Steel Globe Valves are popular in many industries because they control flow well. Here are some common uses:

    Industry Application Description
    Food and Beverage Used to handle clean fluids in factories and packaging plants.
    Pulp and Paper Controls flow of chemicals, steam, and pulp during production.
    HVAC Systems Manages flow of hot water, cold water, and refrigerants in buildings.
    Pharmaceutical and Biotechnology Regulates flow of clean water and sterile liquids in production.
    Oil and Gas Controls flow of oil, gas, and refined products in operations.
    Power Plants Manages flow of steam and water in boilers and cooling systems.
    Chemical Processing Handles harmful or corrosive liquids in tanks and reactors.
    Water Treatment Controls flow of water and chemicals in treatment plants.

    These examples show how flexible Cast Steel Globe Valves are. Whether in energy, factories, or water systems, these valves work well for flow control.

    Forged Steel Globe Valves

  • Forged Steel Globe Valves

    Forged Steel Globe Valves supplier,China Forged Steel Globe Valves factory

    Definition and Characteristics

    Forged steel globe valves are made by pressing solid steel under high pressure. This process makes the steel very strong and long-lasting. These valves work best in systems with high pressure and heat where safety is important.

    The materials used in forged steel globe valves help them perform well in tough conditions. Here’s a simple breakdown of their parts and materials:

    Part Material Used
    Body and Bonnet A 105 / A 182 F 304/316 / A 182 F 304L / 3016L / A 182 F 11/22
    Trims CS + Cr 13% [SS 410]/ A 105 / A 182 F 304/316 / A 182 F 304L/3016L / A 182 F 11/22
    Gasket P.T.F.E. / Graphite Asbestos / SPW SS With Graphite Filled
    Gland Packing Grafoil / braided Asbestos / P.T.F.E.
    Hand Wheel S.G. Iron / Ductile Iron
    Fasteners CS / B7 / 2H / SS 304 / SS 316
    Valve Design BS 5352
    Pressure Testing API 598 / BS 6755 Part I
    Face to Face ANSI B 16.10
    Butt Weld End ANSI B 16.25
    Socket Weld End ANSI B 16.11
    Screwed End ANSI B 1.20.1 (BSP / NPT)
    Inspection 3rd Party / Client / Manufacturer

    These valves are smaller and lighter than cast steel ones. This makes them easier to fit in tight spaces.

    Manufacturing Process

    Forged steel globe valves are made by heating steel until it’s very hot. Then, the steel is pressed into shape using strong force. This process removes any weak spots inside the steel, making it stronger. After shaping, the parts are carefully measured and cut to the right size. The finished valves are tested to meet rules like API 598 and BS 5352.

    This way of making valves ensures they can handle tough conditions without breaking. Their strong build makes them perfect for important jobs in industries like oil, power, and chemicals.

     

  • Comparing Cast Steel and Forged Steel Globe Valves

  • Strength and Durability

    Forged steel globe valves are stronger and last longer than cast steel ones. Forging squeezes the steel tightly, removing weak spots inside. This makes the steel tougher and more solid. For instance, F92 Class 2500 forged valves can handle 223.4 bar at 1112°F (600°C). In the same conditions, F91 cast valves manage only 203.1 bar. At higher temperatures, the gap grows bigger. F92 valves handle 190.6 bar at 1157°F (625°C), while F91 valves handle just 152.1 bar. This makes forged steel valves better for tough jobs where strength matters most.

    Cast Steel Globe Valves are strong but not as tough in extreme conditions. Their making process can leave tiny flaws that weaken them over time. These flaws make them less able to handle high pressure and heat. Still, they work well in medium-pressure systems and for larger valve sizes.

    Pressure Ratings and Leakage Prevention

    Both valve types keep systems safe, but forged steel valves handle pressure better. Their tight and compact design makes them great for high-pressure systems. Cast steel valves work fine but handle less pressure overall.

    Valve Type Pressure Handling Capability
    Forged Steel Excellent
    Cast Steel Good

    Forged steel valves also stop leaks better because of their precise design. They are very reliable, even in tough conditions. Cast steel valves can stop leaks too but may need more upkeep to stay sealed.

    Tip: Use forged steel valves for systems where leaks must not happen.

    Cost and Budget Considerations

    Cost is important when picking between these valves. Forged steel globe valves cost more because they are harder to make and use stronger materials. Their higher price is worth it for systems needing top strength and performance.

    Cast Steel Globe Valves are cheaper, especially for bigger sizes. Casting costs less, making these valves a good choice for less demanding jobs. If you need to save money but still want good performance, cast steel valves are a smart option.

  • Long-Term Maintenance and Reliability

    When picking a valve, think about how often it needs fixing and how reliable it is. These things affect how well your system works and how much it costs over time. Cast steel and forged steel globe valves are different in these areas.

    Forged steel globe valves are very reliable. The way they are made removes weak spots, so they are less likely to break. This makes them great for systems that can’t afford to stop working. They last longer and need fewer fixes. Their small size also makes repairs easier and faster. Even though they cost more at first, their strength saves money later by needing fewer repairs or replacements.

    Cast steel globe valves are flexible but might need more upkeep. The casting process can leave tiny flaws, which can wear out faster in tough conditions. These valves work best in medium-pressure systems where fixing them often isn’t a big deal. They cost less upfront, but you might spend more later on repairs.

    Studies show that 70% of a valve’s costs happen after it’s installed, mostly during big repairs. Companies now wait longer, like 5 to 8 years, between fixes. This can lead to surprise problems. Surprisingly, only about half of the valves scheduled for fixing actually need it. Picking a reliable valve can help avoid wasting money on unnecessary repairs.

    Maintenance Factor Cast Steel Globe Valves Forged Steel Globe Valves
    Maintenance Frequency More often Less often
    Long-Term Reliability Okay Very good
    Life Cycle Cost Impact Higher because of more repairs Lower because they last longer

    Tip: If your system needs long gaps between fixes, forged steel globe valves are a better choice. Cast steel valves are still good for easier jobs.

    Picking between cast steel and forged steel globe valves depends on what your system needs. Cast steel valves are good for medium pressure and come in many sizes and shapes. Forged steel valves are stronger and last longer, working best in high pressure and heat.

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Different of Flanged Check Valve

BS1868 flanged check valve

What is a flanged check valve? 

This is a check valve designed with flanges at the end of the ports. Flanged check valves are used to prevent reverse fluid flow in different applications. These valves operate automatically using the pressure difference principle in which they open when the inlet fluid pressure is high like when the pump is on and close when suction pressure is low or when the pump is turned off. Such valves are meant to work on different types of media that is slurries, liquids, gases, vapors, and steam. Flanged check valve manufacturers design these valves with flanges so that they can be connected to the pipe using bolts and nuts. The pipe end to be connected to the valve is also made with the flanged end. The flange has holes where the bolts are passed to connect the valve and the pipe. Flanged check valve supplier design these valves for use in high-pressure applications because the bolts and nuts provide a very tight seal meaning even in high pressure they do not leak. Also, these valves can be used in either low or high temperatures depending on the material used to construct internal parts.

Flanged check valve

Figure: Flanged check valve.

 

Components of flanged check valves 

Valve body 

This is the main part of a flanged check valve which is used to contain internal parts. The valve body is made very strong using high-strength metallic materials like stainless steel, carbon steel, ductile iron, and cast iron among other metallic materials. The high strength of the body helps to protect the internal parts and the entire valve against high pressure and impact damage which may be from falling objects or when the valve falls down.

Bonnet/cover  

This is the part of a flanged check valve that is placed on top of the valve body to serve as the valve cover. Flanged check valve manufacturer designs the bonnet and body with the same material enhancing valve strength and tight connection. The body and the bonnet are connected using bolts and nuts.

Valve disc 

This is the part of a flanged check valve that is used to open and close the fluid flow. The disc opens when there is low suction pressure and it closes when the suction pressure reduces or the pump is turned off.

Spring 

This is a component used to help the valve disc return to its seating position when the pump is turned off or when there is backflow. Some flanged check valve manufacturers design the valve without a spring. In such valves, the disc closes by using gravity or backflow.

Seat 

This is a component of a flanged check valve which is mounted between the valve body and the disc to prevent fluid leakage as well as serve as the seating surface when the disc closes.

Gasket 

This is a component placed between the mating faces of the valve and the pipe to prevent fluid leakage. It is also placed between the bonnet and the body mating faces to enhance tight seal.

Components of a flanged check valve

Figure: Components of a flanged check valve.

How does a flanged check valve work? 

A flanged check valve operates by using the principle of pressure difference. This is the principle in which the suction pressure should be more than the outlet pressure for the valve disc to open. The pressure difference provides energy that is used to force the valve disc to open. Once the disc opens, fluid keeps flowing through the flanged check valve until a time when the suction pressure reduces or when there is backflow. When the suction pressure reduces, backflow occurs. As such, the disc returns to its seating position immediately where it blocks any fluid attempting to flow backward. These valves are very important machines used in different applications such as water and foods applications in which any reverse fluid flow can cause food contamination or cause damage to pumps or boilers.

Working of a flanged check valve

Figure: Working of a flanged check valve.

 

Types of flanged check valves

Flanged swing check valve 

This is a type of flanged check valve which uses a valve disc that swings to open and closes by shutting like a trap door on a hinge mounted outside the seat. Flanged check valve manufacturers design this valve with a replaceable washer that is mounted on the disc to take most of the wear. The valve uses a loose pin hinge to help the disc close fluid flow when fluid attempts to flow backward or when suction pressure reduces. Flanged swing check valves can be installed in the horizontal or vertical orientation provided the disc does not stall causing zero fluid flow or reverse fluid flow. Flanged check valve manufacturers recommend these valves for use where there is no frequent reverse fluid flow to prevent the valve from chattering. These valves are suitable for use in viscous and dirty fluid because it is not easy for dirt to interfere with disc rotation. When the size of the Flanged swing check valve increases, the travel and weight of the disc become excess for the valve to operate satisfactorily. As such, flanged check valve manufacturers design large-sized valves with several discs across the fluid flow passage of the valve.

Flanged swing check valve

Figure: Flanged swing check valve.

Flanged lift check valve 

This is a flanged check valve in which the fluid opens the disc from the bottom side. The working principle is such that when the inlet pressure is high than the outlet pressure the fluid forces the disc to lift allowing free space for fluid to flow. The valve disc returns to its seating position when the inlet pressure reduces by using backflow pressure or gravity force. This helps to shut off the flanged lift check valve ensuring no reverse fluid flow. One advantage of using a flanged lift check valve over other valves is that the valve needs a short lift relative to the others that open fully. The flanged check valve manufacturer designs the valve with a guide for the disc to ensure the disc can move precisely to the seating positing and prevent fluid leakage. However, this guide has some challenges in that dirt tends to enter the guide causing the hanging up of the closing member. Also, in the case of viscous fluids, the valve operation will be interfered with and may cause the disc to hang up. As such, the flanged check valve manufacturer recommends the use of this valve in low viscosity fluids that are free from solids. Flanged lift check valves have the advantage of being free from the slamming effect which is common in swing-type valves.

Flanged lift check valve

Figure: Flanged lift check valve.

Flanged ball check valve 

This is a flanged check valve that uses a ball component to close the fluid flow. The ball in this flanged check valve travels without being guided closely. When the inlet pressure reduces or there is backflow, the ball rolls back to its seating position ensuring fluid does not reverse. Flanged check valve manufacturers use or may not use a spring mechanism in these valves. If the flanged check valve does not have a spring, the ball is moved to close the valve by the backflow of the fluid. A flanged ball check valve serves well in applications of viscous fluids and where the fluid is prone to sediments and scales. This type of valve has minimal wear on the ball and seats. Flanged check valve manufacturers recommend using this type of valve in applications where the fluid flow changes rapidly.

Flanged ball check valve

Figure: Flanged ball check valve.

Flanged silent check valve 

This is a flanged check valve that is meant to prevent reverse fluid flow as well as prevent water hammer. Water hammer is a phenomenon that occurs in check valves when the valve closes quickly. Water hammer is dangerous as it impairs piping system structural integrity. When the pump is turned off and fluid forward flow reduces, a helical spring controls the valve disc to close by moving it to its seating position before fluid reverses. The spring helps to ensure that the valve is free from slamming when shutting and thus water hammer effect is eliminated.

Flanged silent check valve

Figure: Flanged silent check valve.

 

Applications of flanged check valve 

  • Foods and beverage processing plants.
  • Water supply and wastewater treatment to prevent water contamination.
  • Steam power generating plants to prevent reverse fluid flow into or from the boiler.
  • These valves are used in the oil and gas refinery industries.
  • Chemical manufacturing plants.
  • Paper and pulp applications.
  • Pharmaceutical industries.
  • Marine applications.

  • Advantages of flanged check valves 

    • Stronger compared to other types like threaded end types.
    • These valves are free from fluid leakage.
    • Operate automatically relieving the user of the valve handwheel or actuator.
    • High efficiency because their pressure loss is less compared to other valves.
    • They operate fast relative to other valves that need several turns of the handwheel to close or open like gate valve.
    • Do not allow reverse fluid flow which may cause damage to the piping system or fluid contamination.
    • These valves can be installed in vertical or horizontal orientation provided the disc will not stall.
    • Durable, repairable, and easy to install.

     

    Disadvantages of flanged check valves 

    • Cannot allow fluid flow in both directions.
    • These valves do not work well in pulsating fluid flow.
    • They are heavier compared to other valves.
    • Prone to water hammer problems.

     

    Troubleshooting flanged check valve 

    Zero fluid flow through the valve

    • Wrong installation of the valve. Ensure the direction of fluid flow matches the arrow indicated on the valve body by the flanged check valve manufacturer.
    • There is low pump pressure. Increase the pumping pressure to the level recommended by the flanged check valve manufacturer.
    • The downstream valve is closed. Open the downstream valve.

    Valve vibrates 

    • High fluid velocity. Ensure the fluid flow velocity matches the velocity recommended by the flanged check valve manufacturer.

    Valve does not close 

    • Foreign materials in the valve. Remove any material interfering with valve closure.

    Internal fluid leakage 

    • Debris inside the valve. Clean any debris inside the valve.
    • Damaged O-rings. Replace the O-rings.
    • Worn out or damaged seats. Replace the seats.

    External fluid leakage 

    • Loose bolts. Tighten the bolts to the torque required by the flanged check valve manufacturer.
    • Worn out or damaged valve gasket. Replace the gasket.

     

    Summary 

    Flanged check valves are valves designed with flanges. The flanges serve as mating surfaces for the valve-pipe connection. They are very strong and thus suitable for use in high-pressure applications. Flanged check valve manufacturers design these valves for use in preventing reverse fluid flow. Fluid flows in the reverse direction when the suction pressure reduces or when the pump is turned off. The flow of fluid in the reverse direction can lead to upstream fluid contamination or damage to pumps and boilers.

    A flanged check valve operates on the principle of pressure difference in which the valve disc opens fluid flow when the inlet pressure exceeds the outlet pressure. Flanged check valve manufacturers produce various types of these valves which include flanged swing check valves, Flanged lift check valves, flanged ball check valves, and flanged silent check valves among others.

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API6D Ball Valve Types and Features

API 6D is a standard set by the American Petroleum Institute (API) for valves used in pipelines transporting oil, natural gas, and other liquids. API 6D defines the design, manufacturing, testing, and quality assurance requirements for various types of valves, including ball valves, used in these critical applications.

Types of API 6D Ball Valves

API 6D Ball Valves are designed to ensure reliability, performance, and safety in pipeline systems. There are several types of ball valves that conform to the API 6D standard:

  1. Floating Ball Valve
    • Design: In a floating ball valve, the ball is not fixed to the stem but is allowed to “float” within the valve body. It is pressed against the valve seat by the fluid pressure, ensuring a tight seal when the valve is closed.
    • Application: Suitable for low-pressure and medium-pressure systems, as the ball relies on the pressure of the fluid to create a seal.
  2. Trunnion Mounted Ball Valve
    • Design: A trunnion-mounted ball valve has a ball that is fixed at two points (top and bottom) by trunnions (supporting shafts), allowing the ball to remain stationary and only rotate. This type of valve typically requires less actuator torque than a floating ball valve.
    • Application: Suitable for higher pressure applications and large-diameter pipeline systems. Trunnion valves are generally preferred in applications where sealing performance and low torque are crucial.
      China Trunnion Ball Valve
  3. Top Entry Ball Valve
    • Design: The valve body allows for maintenance or servicing of the valve components (such as the ball and seats) through the top without removing the valve from the pipeline.
    • Application: Used in systems where easy maintenance is essential without system shutdown or disassembly.
  4. Side Entry Ball Valve
    • Design: In a side-entry ball valve, the valve body is designed such that the ball and stem assembly is inserted from the side.
    • Application: Typically used in smaller sizes and more accessible locations for easier maintenance and installation.
  5. Full Port (or Full Bore) Ball Valve
    • Design: A full port ball valve has a bore (internal diameter) that matches the pipe’s internal diameter, offering minimal flow resistance and full flow capacity.
    • Application: Ideal for applications requiring unrestricted flow, like pipelines carrying sensitive materials or substances that need to maintain flow integrity.
  6. Reduced Port (or Reduced Bore) Ball Valve
    • Design: In a reduced port ball valve, the bore is smaller than the pipe diameter. This results in some flow restriction compared to a full port ball valve.
    • Application: Typically used where space is constrained, or flow capacity is less critical.

Key Features of API 6D Ball Valves

  1. Design Pressure and Temperature Range:
    • API 6D ball valves are designed to withstand a wide range of pressures and temperatures based on the valve class. The design ratings ensure that they perform safely and effectively in both standard and extreme conditions.
  2. Material Selection:
    • The materials used in API 6D ball valves are chosen for their resistance to corrosion, erosion, and wear, as well as their ability to handle high pressures and temperatures. Common materials include stainless steel, carbon steel, and various alloys like Inconel and Hastelloy.
  3. Fire-Safe Design:
    • Fire-safe ball valves are designed to continue to operate in the event of a fire. These valves are typically equipped with secondary sealing mechanisms (e.g., graphite or metal seals) that provide sealing integrity even under high heat conditions.
  4. Blowout-Proof Stem:
    • A blowout-proof stem is a critical feature for safety. It ensures that the valve stem cannot be dislodged, even under extreme pressure, preventing accidental release of valve contents.
  5. Anti-Static Features:
    • Some API 6D ball valves are designed with anti-static features that prevent the accumulation of static electricity, reducing the risk of sparks in volatile environments.
  6. Seat Materials:
    • The valve seats are typically made from soft materials like PTFE, PEEK, or elastomers, but can also be made from metal for higher temperature or more abrasive applications. Seat designs can vary depending on the application, with options for sealing at high pressures, low pressures, or extreme temperatures.
  7. End Connections:
    • API 6D ball valves typically come with various end connections, including flanged, threaded, and welded types. Flanged ends are most common, as they allow easy installation and removal from the pipeline.
  8. Actuation Options:
    • API 6D ball valves can be manually operated (via handwheel or lever) or automatically operated (via electric, pneumatic, or hydraulic actuators). Automated actuation is often used for remote operation or in hazardous environments.
  9. Double Block and Bleed (DBB) Feature:
    • Some API 6D ball valves offer a Double Block and Bleed feature, which ensures a tight seal on both sides of the valve and allows for the safe venting of any trapped fluids between the seats. This is essential for ensuring safe maintenance and operation.

API 6D Ball Valve Applications

  • Oil & Gas Pipelines: Used extensively in the transport of crude oil, natural gas, and refined products.
  • Chemical Processing: Valves are used for the controlled flow of chemicals and other reactive fluids.
  • Water Treatment: Used to control the flow of water in treatment plants.
  • Power Generation: In power plants, ball valves regulate steam, water, and fuel in various stages of the generation process.

Summary of API 6D Ball Valve Types and Features

Type of Valve Design Features Application Areas
Floating Ball Valve Ball “floats” to create a seal, relies on fluid pressure Low to medium pressure systems
Trunnion Mounted Ball Valve Ball fixed with trunnions, lower torque required High pressure and large-diameter pipelines
Top Entry Ball Valve Servicing from the top without removing valve from pipeline Applications requiring easy maintenance
Side Entry Ball Valve Ball assembly inserted from the side Smaller systems or accessible locations
Full Port Ball Valve Full bore matching pipe diameter Unrestricted flow, sensitive materials
Reduced Port Ball Valve Bore smaller than pipe diameter Space-constrained applications

Conclusion

API 6D ball valves are designed to provide reliable, durable, and safe service in pipeline systems, especially in the oil and gas, chemical, and power generation industries. The wide variety of designs and features available ensures that these valves can meet specific operational requirements, whether dealing with high pressure, extreme temperatures, or corrosive materials

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ISO 5211 Mounting Pad Flange Dimensions

ISO 5211 is an international standard that specifies the mounting dimensions for actuator flanges used to mount actuators onto valves, providing a standardized interface. The dimensions are used primarily for industrial valve automation.

ISO 5211 Mounting Pad Flange Dimensions

The flange dimensions depend on the size of the valve and the actuator. The standard specifies both the bolt circle diameter and the number of mounting holes, as well as the diameter of the mounting holes.

Here’s an overview of the mounting pad flange dimensions for ISO 5211 for different actuator sizes:

Actuator Size (DN) Bolt Circle Diameter (D) Number of Holes (N) Hole Diameter (P) Mounting Pad Thickness (T) Central Hole Diameter (H)
1 (small) 50 mm 4 10 mm 12 mm 25 mm
2 60 mm 4 12 mm 14 mm 30 mm
3 75 mm 4 14 mm 16 mm 40 mm
4 85 mm 4 16 mm 18 mm 45 mm
5 100 mm 4 18 mm 20 mm 50 mm
6 120 mm 4 20 mm 22 mm 60 mm
7 140 mm 4 22 mm 24 mm 70 mm
8 160 mm 4 25 mm 28 mm 80 mm
9 180 mm 4 30 mm 32 mm 90 mm

Key Points:

  1. D: Bolt Circle Diameter (the diameter of the circle formed by the centers of the bolt holes).
  2. N: Number of holes (standard is usually 4 or 8 holes, depending on the actuator size).
  3. P: Hole Diameter (diameter of the mounting holes for bolts).
  4. T: Mounting Pad Thickness (thickness of the flange).
  5. H: Central Hole Diameter (the diameter of the hole in the middle of the flange, typically for the valve shaft or stem).

Note that the exact dimensions can vary slightly depending on the manufacturer and specific application (e.g., for larger actuators). Always confirm with the specific actuator and valve manufacturer or consult the full ISO 5211 standard for more detailed information or any specific deviations from the general sizing.

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Double Block and Bleed (DBB) Valve Design and Features

A Double Block and Bleed (DBB) valve is a type of valve assembly used to isolate a section of a pipeline or system for maintenance, repair, or safety purposes, while also allowing for the draining or venting of the system to prevent hazardous situations. The “double block” refers to the use of two valves to isolate the flow path, while the “bleed” refers to a third valve that provides a venting or draining capability between the isolation valves.

Here are the key design features and components of DBB valves:

1. Basic Design and Functionality

  • Isolation Valves: Typically, a DBB valve features two isolation valves (usually ball valves or gate valves) arranged in series, which are designed to provide a double seal between the isolated section of the pipeline and the surrounding environment.
  • Bleed Valve: A third valve is incorporated between the two isolation valves, allowing any trapped fluid or pressure to be vented or drained. This prevents the build-up of hazardous or corrosive fluids and ensures safety before opening or working on the isolated section.

2. Components of a DBB Valve

  • Primary Isolation Valve (Upstream): The first valve is located upstream of the section to be isolated. It provides the first block against the flow of fluid.
  • Secondary Isolation Valve (Downstream): The second valve is positioned downstream of the isolated section. This valve provides an additional seal, further isolating the section.
  • Bleed Valve: Positioned between the two isolation valves, the bleed valve allows for venting or draining of the section to prevent fluid from accumulating or causing pressure hazards.

3. Valve Types Used in DBB Assemblies

  • Ball Valves: Common in DBB designs due to their ability to provide a reliable seal and their quick opening/closing action.
  • Gate Valves: Often used for larger systems where low-pressure drop and good shutoff capabilities are necessary.
  • Plug Valves: Sometimes used in specific applications where isolation and bleeding are needed in smaller bore pipelines.
  • Check Valves: In some configurations, check valves are incorporated to provide added safety by preventing backflow.

4. Advantages of DBB Valves

  • Increased Safety: DBB valves ensure a higher level of safety by providing two barriers (the double block) between the process fluid and the surrounding environment, preventing accidental releases.
  • Simplified Design: The DBB valve assembly simplifies the design of isolation and bleeding systems, reducing the need for multiple separate valves.
  • Reduced Risk of Leakage: With the double isolation, the risk of leakage is minimized, which is crucial in systems carrying hazardous, toxic, or flammable fluids.
  • Maintenance Flexibility: The bleed valve allows for safe draining, purging, or venting, which is essential when performing maintenance or replacing components.
  • Cost-Effective: By integrating the function of multiple valves into a single assembly, DBB valves reduce the number of individual components needed, lowering overall installation and maintenance costs.

5. Applications of DBB Valves

  • Oil and Gas: DBB valves are frequently used in the oil and gas industry, especially in wellhead systems, pipelines, and production facilities, to isolate parts of the system during maintenance or to safeguard against leaks of hazardous materials.
  • Chemical and Petrochemical Industries: Used to isolate reactors, storage tanks, or pipes carrying chemicals, ensuring no risk of fluid escape during maintenance or changes in operations.
  • Power Generation: Used in steam, water, and chemical systems to isolate sections for maintenance while ensuring the integrity and safety of the system.
  • Water Treatment: To isolate pipelines, pumps, or tanks while allowing for safe draining, particularly in wastewater systems.

6. Design Considerations

  • Pressure and Temperature Ratings: DBB valves must be designed to handle the maximum operating pressures and temperatures of the system they are installed in.
  • Leakage Requirements: The valves must meet strict leakage standards, often defined by industry codes like API (American Petroleum Institute) or ISO (International Organization for Standardization), to ensure that no hazardous fluid escapes during isolation.
  • Material Selection: The materials used in DBB valves need to be compatible with the fluids being handled. Common materials include stainless steel, carbon steel, and various alloys, depending on the corrosive nature of the fluid.
  • Size and Flow Capacity: The size of the DBB valve must be chosen based on the system’s flow rate, pressure, and other operational conditions. The valve should provide a low-pressure drop across the system when in the open position.
  • Valve Actuation: DBB valves can be manually operated or automated with actuators (pneumatic, electric, or hydraulic) for remote control, especially in high-risk environments.

7. Standards and Codes

DBB valves are often subject to various industry standards, including:

  • API 6D (for pipeline valves),
  • ASME B16.34 (for pressure–temperature ratings of valves),
  • ISO 5208 (for valve testing),
  • API 598 (for valve inspection and testing),
  • PED 2014/68/EU (Pressure Equipment Directive for Europe),
  • ATEX (for equipment used in explosive atmospheres).

8. Challenges and Limitations

  • Complexity: The design of DBB valves can be more complex than single valve isolation methods, requiring careful attention to sealing and proper venting.
  • Size and Weight: DBB valve assemblies can be larger and heavier than individual isolation valves, which may be a concern in tight spaces.
  • Cost: While DBB valves offer significant safety benefits, they tend to be more expensive than conventional single isolation valves, especially for high-performance and high-integrity systems.

9. Conclusion

The Double Block and Bleed (DBB) Valve is an essential valve assembly that ensures high safety, operational reliability, and ease of maintenance in critical systems. By incorporating two isolation valves and a bleed valve, it guarantees that the isolated section of a pipeline or system is fully sealed off from the environment and any trapped fluid can be safely vented. Whether in the oil and gas, chemical, or power industries, DBB valves provide a simple yet effective solution for isolating and maintaining high-risk systems.

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How Does The Pneumatic Actuator of Control Valve Work

A pneumatic actuator in a control valve uses compressed air to move a valve stem, adjusting the position of the valve and regulating the flow of fluids or gases in a system. This type of actuator is commonly used in industrial processes for automation, where precise control over fluid flow is needed. Here’s how it works in a control valve system:

Piston Actuator Sketch

 

Key Components of a Pneumatic Actuator:

  1. Actuator Housing: The body that contains the internal mechanisms and the diaphragm or piston.
  2. Diaphragm or Piston: The component that responds to the pressure of the compressed air to create linear or rotary motion.
  3. Spring: Provides force to return the actuator to its default position when there is no air pressure (fail-safe operation).
  4. Air Supply: The compressed air, usually between 3-15 psi (pounds per square inch), that powers the actuator.
  5. Positioner: A device that ensures the valve reaches the correct position based on the control signal.

Pneumatic Diaphragm Actuator Sketch

How It Works:

  1. Control Signal: A control signal, usually in the form of a 4-20 mA electrical signal, is sent to a positioner or directly to the actuator.
  2. Positioner (if used): The positioner takes the electrical signal and adjusts the air pressure sent to the actuator. The positioner ensures that the actuator responds accurately to the control signal. It compares the signal to the actuator’s actual position and adjusts the air flow to maintain the desired position.
  3. Compressed Air to Actuator: The actuator receives compressed air through one or more ports. If the actuator uses a diaphragm, the compressed air acts on one side of the diaphragm, pushing it to move the valve stem in the desired direction. For a piston-type actuator, the air pressure acts on a piston inside a cylinder, generating linear or rotary motion to move the valve.
  4. Movement of Valve: As the diaphragm or piston moves, it pushes or pulls the valve stem. Depending on the design of the valve (e.g., globe, ball, or butterfly), this motion adjusts the opening or closing of the valve, controlling the flow of the process fluid.
  5. Spring Return (if applicable): Many pneumatic actuators include a spring that returns the valve to a failsafe position (such as fully open or fully closed) when there is no air supply. This is especially important for safety, to prevent unintended flow in case of a failure.
  6. Feedback Mechanism: Some pneumatic actuators have a feedback mechanism that informs the control system of the valve position. This ensures continuous control and helps to maintain precise operation.

Types of Pneumatic Actuators:

  • Single-acting actuators: The spring drives the actuator back to the fail-safe position when air is not supplied.
  • Double-acting actuators: The actuator moves in both directions (open and close) using air pressure on both sides, without the need for a spring.

Direct acting and reverse acting diaphragm actuator

Common Applications:

  • Process Control: In chemical, oil & gas, water treatment, and power generation plants.
  • HVAC Systems: For controlling airflow and temperature in heating, ventilation, and air conditioning systems.
  • Fluid Flow Regulation: To precisely control the flow of liquids and gases through pipelines.

Net effect of various combination for three-port valves

Summary of the Process:

  1. The control system sends an electrical signal to the positioner.
  2. The positioner adjusts the air supply to the actuator.
  3. The actuator moves the valve stem, adjusting the valve position.
  4. The valve modulates the flow of the fluid or gas according to the control system’s requirements.

Pneumatic actuators are popular for their reliability, speed, and ability to operate in hazardous environments where electricity may not be safe or practical.

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