Pressure Seal Check Valve

Pressure Seal Check Valve Specification  

Only one sealing face is designed on the valve body and valve disc,

Full stellite overlay seat sealing surface

Good for manufacturing process and easy to maintain.

Use flexible and woven graphite collaboration type packing.

Absolute bonnet joint leak proof.

Optional by-pass design.

Optional designed with a Damping Cylinder.

Pressure Seal Check Valve Advantage

For service of high temperature and high pressure and are widely used in fossil fuel power plant. Compared with bolted bonnet joint valves, it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.

It is an automatic valve when it is automatically opened or closed by the force generated by the medium flowing within the pipeline. Its major function is to prevent the backflow of the medium in the pipeline, reverse rotation of the pump and its driving motor, and discharge of the medium in the container. 

Application 

Petroleum, chemical engineering, metallurgy, light industry, power station, city building, water supply system, oil transportation, gas feeding, natural gas and long distance transportation pipes projects. 

Applicable Standard 

Design & Manufacture according to : BS1868, ASME B16.34;

Face to Face according to : ASME B16.10;

Flange Dimensions according to : ASME B16.5;

Pressure & Temperature according to : ASME B16.34;

Test & Inspection according to : API 6D / API 598;

Visual Inspection according to : MSS SP-55;

Marking according to : MSS SP-25.

Material For Choice: