API pressure seal (check valve)

It is a casted or forged Swing check valve for high pressure, No penetration of hinge pin to outside eliminating possibility of pin seal leakage and allowed for in-line service.


1. Body-bonnet gasket with closing at pressure – Pressure is used to create a hermetic closure. The higher the pressure, the more hermetic the closure.
2. TRIM completely Stellite coated – Long-lasting disk, seat and back-seat of surface.
3. Welded seat – Eliminates leak between seat and body, does not loosen due to temperature fluctuations or vibrations.
*Removable bonnet


Size: 2″ – 16″
Pressure: 900 – 2500LB
Material: we can offer valves carried out in WCB, WC1, WC6, and WC9.
Design and production standard: ASME B16.34
Distance between flanges: API 6D, ASME B16.10
Connected in accordance with standard: ANSI B16.25
Test standard: API598, API 600
Medium: The valve is suitable for several media including water, steam, oil, gas, petrol products, nitric acid, acetic acid, etc.
Working temperature: from -29℃ up to more than 600℃

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