C95800 Wafer Check Valves

We finished manufacturing some C95800 Wafer Check Valves for one of our European clients, the details are as follows:

Product descriptions

Type Check Valve
Size 16”
DesignPressure JIS5K
Construction Dual Plate Type, With Retainer
Connection Wafer Type
Design & Manufacture API 594
End to End ASME B16.10
Connection JIS2216
Pressure & Temp ASME B16.34
Test & Inspection API 598
Body Material Aluminum Bronze C95800
Trim Material Aluminum Bronze C95800
Media W.O.G.

Medium: air
Working pressure: 5K

Body, bonnet: C95800
Spring: ASTM A182 F316

STV Valve Technology Group Co., Ltd
DATED April 19, 2022

dual Plate Check Valve WAFER Check Valve

dual Plate Check Valve Wafer Check Valve AL Bronze



How long does a cast steel gate valve last?

How long does a cast steel gate valve last?

How many years is the service life of cast steel gate valve? Generally, at normal temperature, the medium is water and there is no high-strength hydraulic impact. Most cast steel gate valves can be used for 3 years and 5 years. The contract signed between the manufacturer and the customer states that the warranty period is one year, so it is necessary to eliminate the situation that the customer changes the working conditions at will. Cast steel gate valve can be used under the working condition of about 300 degrees

Generally, at normal temperature, the medium is water and there is no high-strength hydraulic impact. Most cast steel gate valves can be used for 3 years and 5 years. The contract signed between the manufacturer and the customer states that the warranty period is one year, so it is necessary to eliminate the situation that the customer changes the working conditions at will.
Can cast steel gate valve be used under the working condition of about 300 degrees?


The abrasion resistance of the first-class valve is 2000 times, while that of the first-class valve is 4000 times. The service life of gate valves varies from country to country. It is stipulated to be 30 ~ 40 years in Japan, while it is stipulated to be 40 years in the United States and France.
working principle
Most gate valves are forced sealed, that is, when the valve is closed, the gate shall be forced to the valve seat by external force to ensure the tightness of the sealing surface. The gate of the gate valve moves in a straight line with the valve stem, which is also called rising stem gate valve. Generally, there are trapezoidal threads on the lifting rod. Through the nut at the top of the valve and the guide groove on the valve body, the rotary motion is changed into linear motion, that is, the operating torque is changed into operating thrust.
1. The gate valve is only used to fully open and close the medium on various pipelines or equipment, and is not allowed to be used for throttling.
2. For the gate valve with hand wheel or handle, the auxiliary lever shall not be added during operation (if the seal is not tight, the sealing surface or other parts shall be inspected and repaired). Turn the hand wheel and handle clockwise to close, otherwise it will open. The gate valve with transmission mechanism shall be used according to the provisions of the product operation manual.

1.How long do valves last shut?

You can expect a shut-off valve to last about 10 to 25 years, with an average of 20 years. But, if they are not “exercised” every year or two, there is good chance a valve will be freeze prematurely in the open position just when you really need it to close for a plumbing emergency or repair.
2.When should a gate valve be replaced?
These problems are typically caused by mineral buildup, so you should fully close and open your gate valves every few months to clear potential problems. If your gate valve has severe pitting or corrosion, you will need to replace it.
3.How do you fix a gate valve that doesn’t close?

he first step if a gate valve will not close completely

If the handle of the valve does not turn freely then loosen the packing nut just above the valve body and around the stem of the valve. Loosening it just one turn should be fine – just remember to tighten it back up when you are done.



Ball valves of all materials and seat types are easy to use and long lasting if installed and maintained correctly.


Ball valves of all materials and seat types are easy to use and long lasting if installed and maintained correctly.

Storage Conditions

  • To protect the seat and seals, do not unpack the valves until they are ready for installation. By doing this you are protecting the valve from dust and debris which may eventually cause seat leakage.
  • Keep in a cool well ventilated space if storing for a longer period of time. For cast steel valves (Black finish) the body may require additional application of oil to prevent corrosion.

Valve Installation

  • Ball valves can be installed in any orientation. However in bigger sizes to reduce load on the valve caused by the actuator or gearbox trying to pull away it may be necessary to install with the drive shaft vertical. Electric actuators usually require vertical installation.
  • Verify the material of the ball valve body, seat and ball before installation. Ensure that there are no defects caused by storage or transportation.
  • Verify the pressure rating of the valve vs the application requirement.
  • Verify the temperature rating of the valve vs the application requirement.
  • Verify the valve thread (BSP, NPT, socket weld ANSI), flange (ANSI 150, ANSI 300 etc) or solvent weld (BLP schedule 40) vs the application requirement.
  • Complete all welding works before valve installation and be sure the flange has cooled to ambient  temperature before installing the ball valve.
  • Make sure there is no welding residue, waste, rust or other debris in the pipe before installation. Wash with water or a mild detergent if needed.
  • Clean the surface of the flange or pipe thread that will come in contact with the ball valve to ensure it is free of rust and debris. Wash with water or a mild detergent if needed.
  • Make sure there is no warpage of the flange or misalignment of the ball valve in relation to the flange.
  • Support the valve where necessary to reduce load on the piping (important on bigger valve and actuator assemblies).
  • For 2 way and 3way threaded valves (BVS, BVF8, BLS3) it will be necessary in metal pipework to allow for removal of the valve for maintenance by having a pipe union installed. 3 piece threaded and 2 piece flanged ball valves can be removed for maintenance without disturbing the pipework.
  • Tighten the bolts on a flanged valve one at a time doing it in stages so even pressure is applied and a seal is formed between the valve and flanges.
  • Once the installation is complete, operate the valve several times to ensure it is free from impingement and rotating through its full 90 degree operation.

Field Testing

  • Ball valves are designed to hold rated pressures only. Test pressures above rated working pressure in the closed position can cause damage to the valve.
  • With the ball in the open position the pipeline can be tested up to the valve hydrostatic test pressure.
  • Seat leakage can occur with foreign material between the seat and ball. If this occurs, open the valve 10 to 15 degrees to obtain high velocity flushing action. Close and repeat if necessary.
  • Seat leakage can result from a rotational shift in position of the ball in relation to the body. Readjust the closing stop on the actuator/gearbox as necessary.


  • Do not use the valve at pressures above its working pressure.
  • If the valve is jammed in a position between open and closed check the actuator operation. If necessary remove the actuator and manually operate the valve to fault find. Remove and check valves for foreign objects if required (see maintenance).
  • Excessive torque from the actuator can damage the internal valve parts.


  • Cycle the valve once a month or more if it is not used regularly.
  • Relieve the system pressure before maintaining the valve.
  • To remove from pipework reverse the installation sequence.
  • Replace valve seats and seals by removing the end plates. With the ball in the closed position press carefully push out the end seats and the ball. Avoid damage to the polished ball surface using a soft clean cloth to hold. Push the drive stem up from inside the cavity to expose the stem seals. Reinstall the seals, stem, ball, seats and end plates. Use only approved lubrication on the seals. Test and refit into line as in installation sequence.
  • For operational instructions please see each video link under products.

Design Guidance & Product Advantages

  • When sizing the valve always consider available space for the actuator and feedback devices.
  • Consider valve supports to carry excess loads.
  • Extension shafts in SS316 are available upon request. This allows the valve to be buried in pits and actuators to be above ground.

What is valve Casting?

Casting does one of the earliest production methods use by many industrial organizations in the history of art and design. However, their uses and applications have a long and varied history, and they continue to play an important role in today’s artistic and industrial production areas. Casting is a quick and inexpensive way to give a metal (or other material) object the shape you want. The metal shapes created by the casting process may be complex designs that would otherwise involve a significant technological investment if done in any other way. Read this guide to learn more about casting, its types, advantages, and disadvantages. First, let’s have a look at what casting is.

Metal Pouring

What is valve Casting?

“Valve Casting is a manufacturing technique. In the casting process, a liquid material is added into a mold to get the desired item. The mold has a hollow space of the required shape. The liquid material in the mold is allowed to solidify. This solid part is called a “casting.” The liquid material present in the mold in solid form is ejected or broken out of the mold to finish the process.”.

Types Of Casting

3D Printing Investment Casting

Sand Casting

This casting procedure uses a sand mold to create castings .”Sand casting can use to produce steel, iron, and most nonferrous alloys. The most common casting method, sand casting, uses disposable sand casting molds (The mold in sand casting is made up of Sand) to create intricate metal pieces in almost any alloy. However, sand casting has a poor production rate.

This is because to get the product; you must destroy the mold. Therefore, this method has a disadvantage compared to other methods in which the molds are reusable. The sand casting technique involves using a furnace, metal, design, and sand casting mold. First, the metal is heated in the furnace and poured into a sand casting mold. The solidified casting can be removed once the sand mold separates along a dividing line.

Foundry Mean

Die Casting

“To make a casting, a high-pressure metal liquid is forced into a precision metal mold cavity at fast speed, then cooled and solidified under pressure.”

Die casting is a production process. The molds used in this process are not wasted. They are reusable molds. These reusable molds are called dies. The die casting manufacturing process does use to make geometrically complex metal objects. A furnace, metal, mold(the mold in Die casting is made up of metal), die casting machine, and die are all used in the die casting process. Like sand casting, the metal does the heat in a furnace. Then, it does force into a die casting mold (dies). The metal heated in the furnace does aluminum or zinc (nonferrous). The molten metal feeds into the dies, where it cools quickly and hardens into the completed item, referred to as the casting.

Die casting molds consist of two halves with a cavity

The molten liquid melt is forced into this cavity during the casting process. The halves are mounted on a fixed and movable machine surface. The mold halves are subjected to a great deal of pressure throughout the casting process, which is why locks are included. Furthermore, specific areas of the die casting mold are cooled and/or heated in order for the casting to solidify as required.

Die Casting manufacturers are of two types:

  1. Hot Chambers Manufacturers –  These manufacturers can use alloys with low melting temperatures, for example, zinc.
  2. Cold Chambers Manufacturers can use alloys with high melting temperatures, for example, aluminum.
investment casting vs sand casting

Investment Casting

“Thousands of years ago, molten metal does pour into a disposable ceramic mold in a method known as investment casting .” In the modern age, there are many investment casting foundries where the investment casting process occurs. First, a wax pattern – a disposable component shaped like the intended part – can use to create the mold for investment casting.

After the pattern does melt into the mold, it can cover in a ceramic slurry. This “invests” in the design. Investment casting is also known as “lost-wax cast” because the wax pattern can remove from the mold. The lox-wax process is one-to-one, meaning that one pattern makes one item. This increases manufacturing time and costs. Because the mold does destroy during the manufacturing process, parts with intricate geometries or fine details can still make.

types of patterns in casting

Shell Mold Casting

“Shell mold casting is a metal casting sand process. In this casting process, molten metal is poured into a disposable mold of the desired shape”.
In shell mold casting, on the other hand, the mold is a thin-walled shell made by depositing a sand-resin mixture around a design. Multiple shell molds are made from the pattern, which is a metal piece shaped like the desired part. Higher manufacturing speeds are possible with a reusable pattern, whereas complex geometries are possible with disposable molds. A metal pattern, an oven, a sand-resin combination, a dump box, and molten metal are required for shell mold casting.


Centrifugal Casting

“ It is a permanent mold procedure that fills a mold with molten material using centrifugal force.” This casting method is of three kinds.

  1. Centrifugal Casting
  2. True centrifugal casting
  3. Semi centrifugal casting

Their mechanism of the process is the same. Molten metal is poured into a bowl, from which it is centrifugally driven into the mold( rotating around an axis). The centrifugal force is the radially directed outward force on an object moving in a curved path. Alfred Krupp developed the centrifugal casting process in 1852. He used centrifugal casting for making railway wheels. By carefully controlling the metal and crystal structure, high-quality items can be produced utilizing this casting technique. These casting techniques are primarily employed to create rotationally symmetric items. This procedure does not produce the finished result; it takes some machining to achieve a fine finish.

Treatment of steel casting defects

Permanent Mold Casting

Permanent mold casting is a metal casting method. In this method, the mold can fill with molten metal and remains close until it cools and hardens into the desired shape. Permanent mold casting is similar to sand casting. Sand casting, on the other hand, uses a disposable mold that is thrown away after each cycle. Like die casting, permanent molds use metal molds (dies) that can be reused thousands of times and usually consist of steel or cast iron. In permanent molds, casting can also refer to as gravity die casting, in which case there is no external force to pour the molten metal into the mold.

Permanent mold casting does most often use to make small base metal parts with consistent wall thickness in large quantities. Alloys of aluminum, copper, and magnesium are the common non-ferrous metals used in this procedure. However, it can also use graphite molds to cast iron and steel.

Advantages Of Casting

Following are the advantages of castings which make it best among most manufacturing processes.

  1. Casting makes the item have extremely intricate form and internal hollows.
  2. It can use to create parts ranging in size from a few hundred kilos to a few kilograms (thousand of kilograms).
  3. Both non-ferrous and ferrous metallic elements do cast.
  4. It is cost-effective and waste-free since the excess metal from each casting is re-metalized and re-used.
  5. It is a process that is very adaptable to the needs of mass manufacturing, allowing for the rapid creation of vast quantities of a particular casting.
  6. Casting tools are more affordable and straightforward.
  7. Only castings can make certain metals and alloys.
  8. From casting, an exact object is created.
  9. The isotropic structure is created.
  10. Among all production methods, it is the most cost-effective.
  11. Casting can use to make composite components.

Disadvantages Of Casting

No doubt, casting is the most cost-effective method among all production methods, and exact objects can create from casting. But there are some disadvantages of this method. Following are the disadvantages of this method:

  1. Surface quality is relatively rough, requiring a wider tolerance and making mating interfaces unsuitable.
  2. Some metal casting processes have a limit in terms of size and pattern.
  3. Although additive manufacturing technologies such as binder jetting have recently been utilized to manufacture molds, patterns are time-consuming and expensive to create.
  4. Some casting processes are costly for medium runs.
  5. The size and substance of the part are determined by the casting method used. For permanent mold castings, for example, only non-ferrous metals are allowed.
  6. This method does hinder casting defects, for example, moisture in the sand.
  7. When compared to forging, it has lower fatigue strength.

Applications Of Casting

Let’s have a look at some applications of the casting process

General applications

The following are some examples of general casting applications.

  1. Parts made of cast iron are utilized at railway crossings.
  2. Transportation vehicles.
  3. Applications of atomic energy
  4. Generator of electricity
  5. Parts of railway crossings
  6. Turbine Vanes
  7. Agriculture parts
  8. Parts of communication
  9. Turbine at a power plant
  10. Parts for sanitary fittings.
  11. Engine block for a car
  12. Tool beds for machines
  13. Rolls for the mill
  14. Pipes for water and sewage.
  15. Engines for transport vehicles

Applications of Casting in the Automobile industry:

Components of complex shape and size were required in the vehicle industry. Other manufacturing methods are unable to make these pieces. Therefore, the casting process does use to make 60% of the components in an automobile. Because the strength of Casting components is greater than that of other manufacturing parts, strength is a critical attribute in automobiles.

  1. Cylinder Block
  2. Fuel Intake part
  3. Piston Ring
  4. Engine Components
  5. Parts of sunroof
  6. Transmission parts

Application of Casting in industries :

The casting technique can use to make a cylindrical hollow cylinder, a piston can use in automobiles, a pulley, engine manifolds, valves, nuts, and Defence equipment, among other products. Casting does utilize in various industries, including aerospace, Defence, automobiles, trains, construction, agricultural, mining, and chemical. It can also use to make home decor and ornaments.

  1. In transport industry: Shipping, aerospace, railways, automobile
  2. Households: Appliances, Kitchen equipment, fitting equipment
  3. Defense equipment: Vehicles, Artillery, Supporting equipment
  4. Plant equipment: Sugar mill equipment, Plastic industry, Paper industry, Thermal power plant, Petroleum industries
  5. Art object: Furniture, sculptures, idols
  6. Municipal casting: Valve, pipe, joints, and fittings
  7. Machine tools: plastics molding, forging, extrusion, and forming.


Valve Casting is an essential production technology that enables the manufacturing industry to make various items. Casting can do in various ways, including sand casting, die casting, investment casting, and more. We hope that this guide has given you a better understanding of the casting process and its benefits and drawbacks.

What is a non-slam check valve?

To answer this question we must first consider the basic structure of a check valve. A check valve consists of two ports; an inlet for liquid or gas to enter the valve and an outlet for it to exit the valve. Within the chamber of the check valve is contained an opening and closing mechanism (valve disc). Therefore, liquid or gas can only pass through the valve in one direction, hence it is sometimes referred to as a non-return valve, one-way valve etc. When the liquid or gas attempts to flow backwards through the valve the disc will close or slam shut. The surge of the backflow hitting the closed disc can create a hydraulic shock or water hammer. Water hammering can cause problems such as pipe rupture, collapse or damage to pumping systems. To get around these problems, the non-slam check valve utilises an internal coiled spring downstream from the disc. So instead of relying on backward flow to close the valve, as the forward flow starts to slow, the valve is closed off with the spring mechanism, eliminating any backflow and the cause of the water hammer.


Applications of Non-Slam Check Valves

Typical applications of Non-Slam Check Valves would include:

  • Centrifugal Compressor Discharge
  • Reciprocation Compressor Discharge (Sizing is critical for this application)
  • Rapid Closure requirements
  • Low Pressure Drop Requirements
  • Salt Water Fire Safety Systems Critical Service
  • Desalination Reverse Osmosis Process
  • Critical Applications
  • Non Serviceable Locations *
  • High system deceleration applications
  • Elevate Valve Slamming applications
  • High Temperature critical applications
  • Cryogenic Application
  • Pulsating Flow Applications
  • Renewable Energy Hydrogen Service
  • Lethal Service **

Top Industrial Valve Manufacturers To Consider In 2022

Top  Industrial Valve Manufacturers To Consider In 2022

The ranking of industrial valve manufacturers in China is continually rising over the past years. This is because of the increase in a lot of new Chinese suppliers in the market. These companies are catching up with the rapidly increasing demand within the country’s flourishing economy of industrial valves.

The demand for industrial valves in China has grown much larger compared to the combined demand in other countries in the world in 2006. This exceeded the capacity of international suppliers and are therefore largely served by domestic industrial valve companies. In fact, the largest industrial valve manufacturer in the world is China. You can check this article for the top valve manufacturers in China in case you are interested. 

In this article, we are going to present to you the top ten industrial valve manufacturers you should consider this 2020. These manufacturers not only have different valves, but also have high-quality strainers for sale. We have included one manufacturer located in China. We will briefly discuss each company and their offered products in the following sections.

Source: AVK

#1 AVK Group

AVK manufactures industrial monitoring and control systems for discrete and process industries. AVK’s division for flow control, known as AVK Valves, is manufacturing industrial valve varieties for the following industries:

  • Oil and gas,
  • Water treatment,
  • Paper and pulp,
  • Steel,
  • Chemical, and
  • Power generation.

The company also owns other subsidiaries engaging in valve manufacturing for specific segments of users.

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Source: Bel Valve

#2 BEL Valves

BEL Valves is a UK-based manufacturer specializing in high integrity and high-pressure valves for oil and gas industries. The company caters to pressures reaching 16,500psi in depths of water up to 3,000 meters. 

The British company’s clients include the biggest national and international companies around the world such as ExxonMobil, Chevron, Total, Shell, BP, and Saudi Aramco. What makes them unique from other industrial valve companies is that they manufacture the products in-house separate from the raw materials.

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Source: SLB

#3 Cameron (Schlumberger)

Cameron embarks in industrial products manufacturing including compression, processing, pressure control, and flow control systems. Aside from these, the company also offers services for aftermarket support and project consulting for oil and gas industries. Cameron is among the world’s leaders in systems for flow control. Their products include valves and automation technologies for valves that are exploited in oil and gas industries.

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Source: Emerson

#4 Fisher Valves & Instruments (Emerson)

Fisher Valves has over 130 years of service history after it was established in the United States. The giant company, Emerson, acquired the company many years ago. It has fortified its place as the world’s largest supplier and manufacturer of control valves for oil and gas industries.

According to them, the reason why they are better than other companies is that they take the valve’s internal parts to the care of experienced engineers. Also, they believe that they have developed the most advanced controls that go with the valve. This includes control and diagnostics and very fast opening. These capabilities are crucial for the operation of a whole plant.

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Source: Xhval


XHVAL was founded in 1986 and is a manufacturer of industrial valves based in China. The company specializes in the manufacture of affordable industrial high-quality ball, butterfly, check, gate, plug, globe, and cast iron valves. They focus on providing high-quality service by manufacturing innovative valves intended for the chemical, oil and gas, and other industries. 

XHVAL offers a variety of industrial valves ideal for piping systems and energy service industries molded through constant innovation. In addition to this, they also provide customization of high-quality and world-class industrial valves to fit every application. This differentiates them from other competitors in the market. And to meet the global standards for industrial valves, the company gives continuous supervision and quality control to their products.

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Source: Pentair

#6 Pentair Valves and Controls

This company is part of the bigger Tyco conglomerate, a very diverse manufacturing company. Pentair Valves and Controls, previously known as Tyco Valves and Controls, is still among the largest valve manufacturers for oil and gas industries. The company’s headquarters in the Middle East has a strategic position to serve valves for the region. They claim that they are comprised of knowledgeable and experienced technicians worldwide to provide a quality service.

In addition, they also stated that their products are manufactured and designed to work reliably and safely under extreme pressures and temperatures in the oil and gas industry.

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Source: JC

#7 JC Valves

JC Valves is a Spanish-based manufacturer claiming to have many varieties of high technology and high-quality ball valves with competitive prices. The company does not only serve petrochemical and oil and gas industries. They also serve other industries needing valve products such as the power generation and chemical sectors.

JC Valves has a manufacturing plant that utilizes vacuum technology that essentially eliminates any impurities and gases during the phase of metal melting. This considerably enhances the product’s service life.

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Source: Petrolvalves

#8 PetrolValves

PetrolValves is one of the leading industrial valve manufacturers established in 1964. It became a leader in the Subsea Market in the 1970s for the development of dedicated products such as:

  • Swing check valves,
  • Wedge gate valves,
  • Ball valves, and
  • Slab gate valves.

The company developed its first ball valve with a metal-to-metal sealing and opened branch offices around the world to reinforce its commercial network in the 1990s. PetrolValves’ purpose, according to them, is the safe and efficient delivery of solutions for flow control that suit the requirements of their global customers in the oil and gas industry. 

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Source: Valvitalia

#9 Valvitalia

Valvitalia is an Italian valve manufacturer including various energy equipment. They claim to have the following which differentiates Valvitalia from its competitors.:

  • A large inventory,
  • Experienced management,
  • Performance,
  • Quality, and

Full commitment to their customer’s satisfaction.

Valvitalia currently supplies products in Oman, Qatar, United Arab Emirates, and Saudi Arabia. The company manufactures a wide variety of products including all kinds of actuators, valves, flanges, fittings, and gas equipment.

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Walworth logo

 #10 Walworth

Walworth covers the Middle Eastern territory with ValveTech as the company’s distributor for the whole region. The company was established in 1842 and has dedicated to the design and manufacture of various fluid control valves. 

Walworth is among the world’s oldest manufacturer of valves influencing the Mexican market and offers a variety of specialized valves cast using API standard steels. 

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There are hundreds of valve manufacturers and suppliers around the world. This gives you a wide array of varying options when choosing a flow control valve for your application. With the continuous rise of new industrial valve manufacturers, these companies are pressured to keep the production of valves with very high standards. This makes choosing the right valve manufacturer for your needs more challenging.

Speaking of, this article discusses the basics of industrial valve selection in case you are interested. That’s it! Hopefully, this article has helped you choose your ideal valve manufacturer.



What is the different Y strainer and Basket Strainer?

Basket strainers are a device typically connected to a pumps suction, which is used to filter out solids or debris larger than the mesh contained within the strainer, which would otherwise damage the pump, internal parts or system. They are used to capture particles which are usually visible to the naked eye, and if smaller, filters are typically used.


Strainer Vs Filter
Used to capture larger   solids visible to naked eye Used to capture   particles invisible to naked eye <40 microns which may include salts, or carbon   particles
Designed for a single   type of fluid Can capture   different fluids such as water within oil
Lower pressure drop   enabling use of low pressure designs of pumps Require high   pressure pumping involving high powered positive displacement or multistage pumps   which if selected incorrectly will experience rapid wear by the handling of   such particles
Filter mesh is designed   to be reused over many years Can be single use or   reused through the use of backwashing


Working Principle of Strainers

What is a Basket Strainer

Basket strainers are a device typically connected to a pumps suction, which is used to filter out solids or debris larger than the mesh contained within the strainer, which would otherwise damage the pump, internal parts or system. They are used to capture particles which are usually visible to the naked eye, and if smaller, filters are typically used.

Designs consist of a suction inlet, discharge outlet, bolted top cover and casing. The casing holds a filter typically manufactured from wire mesh designed to filter solids which become trapped by the mesh, and sink within the casing. Top covers can be clear or solid. Housings may have a drain at the bottom of the casing where solids will sink to enable them to be drained away.

Basket Strainer Designs

There are various designs known as Y Type, Simplex, Duplex or Backwash.

what is a Y STRAINER

What is a Y Type Strainer?

This type of design is the most economical type which can be mounted horizontally or vertically and is compact in design. Other designs can typically only work horizontally.

They are cast in one piece, meaning they usually have a higher pressure rating tolerance. However due to their design, they produce a larger pressure drop than other variants. 

What is a Simplex Strainer? 

Simplex models are designed for larger pipework, are longer and wider in design containing a significantly larger basket with removable lid for ease of maintenance.

Due to the larger surface area they are designed for capturing larger amounts of solids, and produce lower pressure drops. They can only be installed horizontally, but are easy to inspect and maintain without drainage of pipework. 

What is a Duplex Strainer? 

Duplex models are very similar to simplex strainers in design, however contain two filter baskets which can operate simultaneously or separately. Having twin filters ensures processes can run interrupted whilst they are maintained, as one can continue to function, while the other is maintained. 


Self Cleaning Strainer/Backwash / Automatic Strainer Design 

Self cleaning strainers, also known as backwash filters or automatic strainers consist of a strainer, drain, scraper and motor.

Within the strainer there is a hollow shaft with a blade which when the cleaning process is initiated, scrapes along the inside of the mesh removing debris. Simultaneously a bottom outlet valve opens creating an area of low pressure causing the recently freed debris to flow via the bottom outlet valve and be drained away.

The cleaning process is initiated either by a timer, which starts the motor located at the top of the unit to begin the screening process or via a differential pressure switch which senses when the screen is blocked.

Pressure switches are located on the inlet and outlet of the unit and when the inlet pressure is higher than the outlet pressure, the filter is known to be blocked.

These are low maintenance designs enabling the mesh to remain clean and free from solids with long maintenance intervals, without manual

Duplex Strainer Exploded View

Strainer Design Comparison Table – Basket Simplex strainer vs Duplex vs Y Type

Y Type


Simplex Strainer


Duplex Strainer


Backwash / Auto cleaning


Mounted Horizontally   or Vertically Maintain without   draining pipework Mesh can be cleaned   without Process Stoppage Autonomous self-cleaning
Compact in design Lower Pressure Drop Redundancy / Spare   Capacity in Design Zero process   stoppage
Economical Higher Solids   Capture
During Cleaning as   the strainer is at the lowest point, there is a larger loss of fluid and   system may need to be drained Process must be   stopped during cleaning Bulkier in Design Large units   requiring piping to drain, which may require secondary filtration or dewatering


Higher Pressure Loss Only Work   Horizontally Only Work   Horizontally Higher Initial   Outlay

Pressure Loss

Below is a graph indicating single and double Basket strainer Pressure drop compared with Y type designs:


At a flow of 10M³H, (166L/min) the pressure drop on the basket type is only 0.3 bar, compared with 0.4bar (40KPA) for a 1″ (DN25) Type



Difference Between Gate Valve And Globe Valve

Gate valves and globe valves are two of the most common valves used in industrial applications. Both contribute greatly to any industrial services. They may look alike but these valves function differently.  In this article, you will know what makes the gate and globe individually unique as well as the major differences between the two valves.

Gate Valve

Gate valves are linear valves belonging to the shutoff valve family. Characterized by its wedge-like disc, the gate valve is commonly used for isolating media because of can tightly seal off media. This kind of valve can be used in applications where tight sealing is required. A special kind of gate valve, knife gate valve, is used in thicker and more viscous media.

Gate valves provide little pressure drops since no obstruction comes in the way of media flow. The gate operates by the gate disc moving upwards to open the valve. It closes by moving the disc downwards to meet with the seats. The disc of the gate valve can be formed like a wedge, knife or parallel.

While it does have some throttling capacity, the gate valve is not used to regulate the flow of media. Its disc is thin so the vibration from the media causes this thin disc to misalign from its seat. This condition causes damage and shortens its service life. To lengthen the valve life, the gate valve should fully open or fully close when in use.

Globe Valve 

The globe valve is also a member of the linear motion valve family. Its functions include stopping and starting of media as well as regulate the flow of media. Because of its design, the globe valve provides a tight seal with fewer chances of leakage.

The globe valve is aptly named as such because of its traditional body design similar to that of the globe. But as one gate valve China manufacturer would tell you, however, modern globe valves may adapt to other body shapes. A plug-like disc allows or prohibits the flow of media.

The seats of the gate valve are parallel to the flow of the media so there is less seat erosion when the valve is on. This also makes the globe valve a great throttling valve. The downside is, there is a high-pressure drop because of its design. 


If you look at the image above, you’d notice that the valve forces the media to change its flow direction exactly inside the valve. Additionally, the media flow inside the valve depends on the space between the seat and the disc. The farther these are, the more fluid comes in.

Globe valves highly suitable for applications where safety and leaks are the main concerns. These valves are often in top-entry design, meaning, access to the internal components of the valve is from the top.

Gate Valve vs. Globe Valve

There is always a comparison between the gate valve and the globe valve. Members of the linear valve family, you’d find these two in tandem in pipe systems. How would you use these two? Look at the differences between the two below:

  • Structure

One of the main differences between the gate valve and the globe valve is how these look. The gate valve construction is much simpler. Much of its internal components are located on the top part of the valve body. When it is turned on, its body becomes hollow. That’s why there is a little pressure drop. The gate valve may have a rising or a non-rising stem.

On the contrary, many globe valve parts are inside the cavity itself. Since its primary purpose is to throttle and provide positive shut-off, the design allows obstructions that aid the globe valve in this purpose. The design also permits changes in flow direction and rate that contributes to a high-pressure drop. The globe has a rising stem.

  • Applications

The gate valve is suitable for applications where low-pressure drops are of utmost importance. It’s a multidirectional valve. The globe is best used in applications where massive changes in pressure are not an issue. This valve is unidirectional.

  • Function

The gate valve is not designed for flow control; it is for isolation of media. The gate valve cannot handle the strength of the media flowing in a partially opened position. On the other hand, the globe valve is more of a control valve.

  • How They Work

In the gate valve working mechanism, the disc lodges between the seats. Its movement is at the right angle in relation to the media flow. It provides either full flow or no flow at all. If you open the valve, the flow space is as big as the valve cavity with little extra where the stem and the seats are located as you’d notice in the first image.

                                                               Source: https://www.quora.com


A fascinating facet of valves is that they may look the same but they can function quite differently. This remains true in the case of gate and globe valves. If you are seeking an industrial valve supplier, you can choose manufacturers in the china,  Or you can also get the great manufacturers in this complete valve manufacturers guide in China.



Top 7 Valve Supplier In Malaysia

Valve manufacturers in Asia are on the rise in rankings. In recent years, several new Valve manufacturers in Malaysia have entered the market. They fulfill the increasing demand for industrial valves in the rising economy of that region. Some of the top players are:


Top Ball Valve Supplier In Malaysia

A ball valve is a quarter-turn valve that regulates the flow of a hollow, perforated, and pivoting ball. When the hole is in contact with the flow, it is opened and closed when the valve handles a pivot of 90 degrees. When opened, the handle is straight and perpendicular to the flow and closed, making it easy to verify the state of the valve.

MIR Valve Sdn. Bhd, Kuala Lumpur, Malaysia.

Established: 2008

Website: http://www.mirvalve.com/

Valve Types: Floating & Trunnion Mounted Ball, Two Way, Three-Way Ball Valve.

Certification: ISO 9001, ISO 14001, ISO 45001, CE-PED, IEC 61508, etc.

MIR VALVE is a maker of API 6D and API 6A ball and gate valves, standard and engineered devices for the oil and gas, mining, and petrochemical industries. MIR valve competes with existing producers for engineered goods. In the light of experience in technology, engineering, and project management for complex works, they have proved our outstanding track record of their goods in operation.


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.

Top Gate Valve Supplier In Malaysia

The gate valve is a linear motion valve used to start or stop the flow of fluid; however, it does not regulate or control the flow. The name of the gate is taken from the presence of the disk in the flow stream.

When the valve is fully opened, the disk of the gate valve is separated from the flow stream. This function provides practically no resistance to flow while the valve is open. As a result, there is no pressure drop through the open gate valve.
AVK Valves Manufacturing Malaysia Sdn. Bhd. Klang, Malaysia.

Established: 1997

Website: https://www.avkvalves.com.my

Valve Types: Flanged, Metal seat Gate Valve, etc.

Certification: ISO 9001:2015, ISO 14001:2015, etc.

AVK Valves Manufacturer Malaysia Sdn Bhd. has full responsibility for the sales, promotion, and distribution of AVK Valves in Malaysia and various other countries in South East Asia. In addition, they are willing to supply a range of other products within the AVK community to satisfy consumer demands.


Top Butterfly Valve Supplier In Malaysia

The butterfly valve is a rotary motion valve that is used to restrict, regulate, and enable the fluid flow. Butterfly valves can be worked conveniently and rapidly because the 90-degree movement of the handle shifts the disk from a fully closed to a fully opened position. Larger butterfly valves are actuated by handwheels attached to the stem by means of gears that offer a mechanical advantage at the disadvantage of speed.

Chuah Valves Manufacturing Sdn. Bhd., Penang, Malaysia.

Established: 1920

Website: https://cvmsb.com/

Valve Types: Anti Cavitation, Double Flanged, Lug Butterfly Valve, etc.

Certification: ISO 9001:2008, BS EN 593:2004, etc.

CVM has evolved to become a renowned manufacturer of butterfly valves in Malaysia. These valves are commonly used in the northern states of the Peninsula of Malaysia. Significant numbers of CVM valves are also used in Sri Lanka under Asian Development Bank ventures.

CVM valves can be used in water treatment plants and distribution, wastewater treatment plants, air conditioning, firefighting, shipbuilding, and chemical plants, CVM provides a wide variety of wafer, u-section, and double-flanged butterfly valves in compliance with BS EN 593, covering a broad range of sizes from DN40 to DN2000. Often available in the style of triple offset metal seated butterfly valves. They are trouble-free and low torque operation assisted by robustly built lightweight gearboxes.


Top Globe Valve Supplier In Malaysia

The globe valve is a linear motion valve used to interrupt, resume, and regulate the flow of fluid. The globe valve disk can be entirely separated from the flow path or the flow path can be completely closed. The basic theory of the operation of the globe valve is the perpendicular rotation of the disk away from the seat. This allows the annular space between the disk and the seat ring to close progressively as the valve is closed. This function gives the globe valve a strong throttling capability, which enables it to be used for managing the flow.


Established: 1979

Website: https://www.unimechkl.com/

Valve Types: Brass, Cast Iron, S, and Z pattern Globe Valve.

Certification: ISO 9001:2008, Q1-3084, etc.

Unimech (KL) is responsible for the design, manufacturing, assembly, testing, and commissioning of industrial machinery and plants for steam generation, heating, and overhaul of production equipment and parts replacement services. The commercial operations of the firm include the central area of the Malaysian Peninsula. In addition, the firm distributes engineering tools and parts.


Top Check Valve Supplier In Malaysia

The control valves are designed to keep the flow from reversing in the pipe system. These valves are triggered by the material flowing through the pipeline. The friction of the fluid flowing through the machine opens the valve, while any reversing of the flow shuts the valve. The closing shall be affected by the weight of the control device, by the backpressure, by the spring, or by a mixture of these means. The general types of control valves are swing, tilting disc, piston, butterfly, and stop.

WOGS Control Valve (M) Sdn Bhd, Selangor, Malaysia.

Website: http://wogscontrol.com/

Established: 2000

Valve Types: Spring Check Valve, Swing Check Valve.

Certification: ISO 9001:2015, ISO 14001:2015, etc.

WOGS Control Valve (M) Sdn Bhd is a fluid control engineering solution provider that effectively helps its customers set up a new partial or fully integrated processing/manufacturing line. WOGS Control Valve (M) Sdn Bhd offers concepts, specifications, production, and installation of new production/processing lines. Helping customers redesign their current process line to offer high quality, performance, and cost savings. Their clients are primarily in the oil & gas, dairy, pharmacy, palm oil, water treatment, steel mill sectors.


Top Y-strainer Supplier In Malaysia

Y strainers, use perforated or wire mesh strainers, mechanically isolate solids from fluids such as steam, gas, or liquid pipes, which are used to secure machinery. The filtering screen in the strainer removes strong impurities in the media on the device as the media moves through the screen, allowing the clean fluid to flow in and out of the filter outlet as the screen hole size can be changed depending on the impurity size.

NEWFLO Corporation Sdn. Bhd., Selangor, Malaysia.

Established: 1994

Website: http://www.newflo.my/index.php

Valve Types: Y strainer Valve.

Certification: ISO 9001:2008, etc.

Newflo Corporation Sdn Bhd was first established in March 1994, mainly engaged as an importer and distributor of valves, pressure gauges, thermometers, fittings, flexible joints, etc. based in Selangor, Malaysia. They specialize in fire protection, HVAC, plumbing, sewage works, water storage, food, oil & gas, chemical industries, etc.



Malaysia has many valve manufacturers for industrial valves, supplying to the rapid demand for these valves. Here we have provided you with a list of the top valve manufacturer in Malaysia to ease your search.

Top 10 Valve manufacturers in India

Asian valve manufacturers are on the rise in rankings. In recent years, several new Valve manufacturers in India have entered the market. They satisfy the rapidly rising demand for industrial valves in the booming economy of that region. Some of the top players are:

  • L&T Valves, Chennai, TN, India.
  • Amtech Valves, Ahmedabad, GJ, India.
  • Kirloskar Brothers Limited, Pune, MH, India.
  • Hawa Valves, Mumbai, MH, India.
  • Nirmal Industrial Controls Pvt Ltd, Mumbai, MH, India.
  • Citizen Metals Pvt Ltd, Mumbai, MH, India.
  • JEKON Controls, Ahmedabad, GJ, India.
  • GM Engineering Pvt. Ltd., Rajkot, GJ, India.
  • VIP Valves, Mumbai, MH, India.
  • Amco Valves, Chennai, TN, India.


Top ball valve manufacturers in India

The ball valve is either an on-off or a shut-off valve. The ball valve is a quarter-turn valve and is used where a simple and regular operation is necessary. Ball valves are usually soft seated, making them unsuitable for abrasive operation. Although soft seat designs are suitable for bubble-tight sealing when used for the clean fluid operation. Two main designs are Floating Ball and Trunnion Ball design.

L&T Valves, Chennai, India.

Established: 1961

Website: https://www.lntvalves.com

Valve Types: Floating Ball & Trunnion Mounted Ball Valve.

Certification: ISO 15848-1, API 622, EU Declaration of Conformity, SIL Certification.

L&T Valve is a pioneer in flow control systems. The company is a part of Larsen & Toubro, an engineering and technology group. L&T Valves reflects on its fifty-year experience of excellence in the manufacture of valves for key sectors of the economy, such as oil & gas, power, petrochemicals, chemicals, water, defense, and aerospace.


Top Gate valve manufacturers in India

The gate valve is used to shut off fluid flow or to provide optimum pipeline flow in a fully open position. Thus, it can be used either in fully closed or fully open positions. The gate valve comprises the body of the valve, seat and disc, spindle, gland, and a valve wheel. The seat and the gate together play a part in shutting down the flow of fluid.

Kirloskar Brothers Limited, Pune, India

Established: 1888

Website: http://www.kirloskarpumps.com/index.aspx

Valve Types: FM Approved Gate, Cast steel Gate, Forged Steel Gate Valves.

Certification: ISO 9001:2015, ISO 14001:2015.

KBL is the first and only valve manufacturer in India to receive the Factory Mutual Compliance Certificate for its fire service water control valves covering Outside Screw & Yoke and Non-Rising Stem Gate Valves (Metal Seated) from Factory Mutual.


Top Solenoid valve manufacturers in India

Solenoid valves are used in fluid power systems to monitor the flow or direction of air or fluid, solenoid valves are electrically operated valves. Used in both pneumatic and hydraulic fluid control systems, the spool or poppet configuration of most solenoid valves makes them suitable for various functions and applications.

Jekon Controls, Ahmedabad, GJ, India

Established: 2000

Website: https://jekonvalves.com/

Valve Types: Diaphragm Type, Single/ Double Acting, Dust Collector, Direct Acting.

Certification: ISO 9001:2015, UK Cert Limited (UK)

JEKON CONTROLS is one of the best manufacturers of Pneumatic Control & Solenoid Valves, company is committed to providing the consumer with a full range of solutions worldwide. Their valves are specifically built for fluids such as water, air, gas, oil, chemicals, steam, and pharmaceutical Goods, etc.

Jekon valves have the best facilities for production and testing to review the design and performance specifications of the component. The company’s R&D team is day by day improving the production and efficiency of product design according to consumer demand. They have the best manufacturers and suppliers’ chain for outsourcing superior quality jobs.


Top Butterfly valve manufacturers in India

The Butterfly valve is a rotary motion valve, a quarter-turn is used to close, regulate, and start the flow. Butterfly valves are easy to open and quick to operate. The 90 ° movement of the handle provides a complete closure or opening of the valve. Large butterfly valves are usually fitted with a gearbox, where the handwheel is connected by gears to the stem. This makes the operation of the valve easier, but the operation slows down a bit.

Amtech Valves, Ahmedabad, GJ, India

Established: 1985

Website: http://www.amtechvalves.com/index.html

Valve Types: Double Flange, Wafer Lug Type, Offset Type.

AMTECH Butterfly valves are ideal for both basic and extremely complicated uses. The range comprises rubber-coated, PTFE lined, metal sealing, and high-performance butterfly valves. Butterfly valves are ideal as either open/closed or control valves. They are available in a wide range of sizes, materials, and designs. Butterfly valves can be fitted with a range of control and actuator options. Amtech Butterfly valves are commonly used in the water, process, and marine industries for chemical and corrosive applications. They sell a variety of valves designed exclusively for pharmaceuticals, food & beverages.


Top Globe valve manufacturers in India

The Globe valve is a linear motion valve designed specifically to stop, start, and control the flow. The disc of the Globe valve can be entirely separated from the flow path or the flow path can be completely closed.

Globe valves are commonly used to regulate the flow. In the configuration of the valve, the range of flow control, pressure drop, and the task must be considered to avoid premature loss and ensure adequate operation. Valves subjected to a high-differentiated pressure-throttle operation need specially designed valve trim.

Hawa Valves, Mumbai, MH, India

Established: 2001

Website: https://www.hawavalves.com/

Valve Types: HPHT Globe Valve as per API 6A.

Certification: ISO 9001:2008, ISO 14001:2004, OHSAS 18001:2007, SIL3, CE/PED, etc.

HAWA VALVES are producers and exporters of valve applications in the essential hydrocarbon/oil and gas industries Upstream, Midstream, Downstream, Chemical, Power, Marine, Mining, and General Industry. With a fully-fledged engineering staff caring for large and technically challenging orders and with an in-house mega specialty ERP online infrastructure.


Top Control valve manufacturers in India

The control valve is a power-operated mechanism used to control or regulate the flow of fluids, such as gas, oil, water, and steam. It is a vital part of the control loop and an example of a final control feature. The Control Valve is by far the most common final control feature used by industry today.

The control valve may be operated either electrically, pneumatically, or hydraulically. The control valve gets a signal from the controller, such as the PLC, so that it can shift, resulting in a change inflow.

Nirmal Industrial Controls Pvt Ltd, Mumbai, MH, India

Established: 1973

Website: https://www.nirmal.co.in/index.html

Valve Types: Pressure Regulators, Safety Relief Valve, Safety Shut-off valve, Creep Relief Valve, etc.

Certification: ISO 9001:2015, ISO 45001:2018, etc.

Nirmal has become the pioneer of self-actuated pressure control valves and Allied process control devices and solutions. Nirmal provides its expertise internationally to all major sectors, such as Oil & Gas, Petrochemical & Refineries, Pharmaceutical, Steel & Power, Food & Dairy, Plastic, and Nuclear Power Industries. Today, Nirmal has been successfully developed as an “Expertise that delivers”


Top Check valve manufacturers in India

The check valve is also known as a clack valve, a one-way valve, or a non-return valve as it allows fluid to move in one direction only. These industrial valves are automatically triggered by the force produced by the movement of the medium itself through the pipeline and can be labeled as an automatic valve. Check valves are often used in pipeline networks, their main roles are to prevent the fluid from reversing back to prevent the pump and its compressor from reversing, and to prevent the medium from flowing back from the container.

GM Engineering Pvt. Ltd., Rajkot, GJ, India

Established: 1996

Website: http://www.gmengg.com/

Valve Types: Dual Plate, Wafer Check, Swing Check Valve, etc.

Certification: ISO 9001:2008, API 6D, etc.

The check valve is the most widely used in residential and industrial complexes. GM Engineering provides a world-class range of check valves that are suitable for various environments. GM is a multinational player whose name is synonymous with consistency in the production of the check valve.

GM Tech presents itself as innovators of conventional origins who build check valves that execute traditional functions more smartly. Their designers and engineers are constantly searching for technology and inventions that can support and create the highest performing valves.


Top Safety valve manufacturers in India

The safety valve is a protection mechanism intended to regulate the system pressure. If the pressure is not regulated, it may build up in the device that causes equipment failure, explosions, or fire hazards. This valve is intended to be opened at a fixed pressure to prevent equipment failure as a result of being exposed to a pressure that exceeds its specification limits. Once the valve is opened due to excess pressure, the media is discharged until the pressure decreases to its appropriate level and the valve is closed automatically.

Hyper Valve, Ahmedabad, GJ, India

Established: 2003

Website: https://www.hypervalves.com/

Valve Types: Safety Relief Valve, Pressure Relief Valve, etc.

Certification: ISO 9001:2008.

Hyper Valve is one of India’s leading manufacturers of industrial valves. Hyper Valve is engaged in the manufacture, design, supply, and export of industrial valves. The company has established a predefined framework and has outlined all the tools needed to satisfy the increasing demands of the market and technological enforcement. Hyper Valve has an ISO 9001:2015 quality control certificate which meets numerous standards such as ASME B 16.11, API 598/BS 5146, API 602/BS 5352, ASME B 16.34, API 598, ASME B 1.20.1, ASME B 16.25, and several other engineering standards.


Top Plug valve manufacturers in India

Plug valves are valves with cylindrical or conical “plugs” that can be turned within the valve body to regulate the flow through the valve. The connectors in the plug valves have one or two hollow passageways flowing horizontally through the plug so that the fluid can pass through the plug while the valve is open.

Citizen Metals Pvt Ltd, Mumbai, MH, India

 Established: 1981

Website: https://www.citizenvalves.com/

Valve Types: Sleeved, Lubricated, Steam Jacket Plug Valves, etc.

Certification: ISO 9001:2008, 14001:2004, 18001:2007, etc.

The Citizen Plug Valve available in sizes ranging from 1/2″ to 72″ is designed especially for wastewater applications. The round port shape available in sizes 1/2″ – 12″ provides the least opposition to the slurry, sludge, and fluid flow resulting in less corrosion, longer service life, and lower pumping costs. A wide round port configuration can flow through larger solids to avoid plugging issues. Round port valves give the best flow characteristics relative to alternate port openings, resulting in a lower pressure drop through the pipe. Pressure classes on 12″ and below are 175 psi, pressure classes on 14″ and above are 150 psi, higher pressure on request.



Many new players are investing in the production business of valves. We have provided you with ten high-quality Valve Manufacturers in India, at affordable prices.