API Pressure Seal  Gate Valves are ideal for high pressure steam, liquid, catalytic reformers, hydrocrackers and other tough services. In the tough world of High pressure, High temperature valve applications, Pressure seal gate Valve continue to provide a wide range of industries with a safe, leak free, pressure containing boundary.

The basic concept of pressure seal valves is that the initial bonnet pull up bolts tighten the bonnet which inturns seals the pressure seal gasket to the body. Then the system pressure assist for more force to seal the gasket. Hence, as system pressure increases, the potential for leakage through the body/bonnet joint decreases.


1. Pressure Seal Bonnet
2. Butt Weld Ends
3. Cast Carbon, Stainless or Alloy Steel Materials
4. Available in all trim configurations
5. Other sizes available on request
6. Outside screw and yoke
7. Flexible wedge
8.Optional parallel sliding disk
9.Backseat: Stellite 6 coated surface or equivalent


Size: 2″-42″
Pressure: 150 – 2500LB
Material: A105N, A350 LF2, A182 F316 or other alloys
Design and production standard: API 6D, API 608, ASME B16.34
Distance between flanges: API 6D, ASME B 16.10
Flange connection: ANSI B16.5
Test standard: API 598, API 6D
Structure: three parts
Actuation: can operate with lever, reducer, pneumatic or electric actuator with handwheel for emergencies
Medium: the valve is suitable for several media including water, steam, oil, gas, petrol products, nitric acid, acetic acid, etc.
Working temperature: from -196ºC (cryogenics service), -46ºC or -50ºC (stainless steel constructions) and -29ºC (carbon steel constructions) up to 220℃

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