Pressure Seal Check Valve


Pressure Seal Check Valve

Pressure Seal Check ValveZeco’s pressure sealed check valves are intended for high pressure, high temperature applications in all types of fluid except where severe.

The pressure seal check valves are designed in accordance with BS1868 and ASME B16.34 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 check valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.

It is an automatic check 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.


1. Only one sealing face is designed on the valve body and valve disc;

2. Full stellite overlay seat sealing surface;

3. Good for manufacturing process and easy to maintain;

4. Use flexible and woven graphite collaboration type packing;

5. Absolute bonnet joint leak proof;

6.  Optional by-pass design;

7. Optional designed with a Damping Cylinder.

Product Range:

Body material: carbon steel, stainless steel, alloy steel, etc.
Nominal diameter:1/2″~24″

Pressure range:Class150~2500(PN10~PN420)

End Connection: RF, RTJ, BW

Working temperature:-29℃~+560℃

Brand Zeco
Valve Type Pressure Seal Check Valve
Valve Material carbon steel, stainless steel, alloy steel, etc
Valve Test 100% quantity tested before delivery
Valve Guarantee 18 months from the date of dispatch ex works,   or 12 months from date of commodity installation.
Valve Painting Customer request
Valve Package Wooden case
MOQ No requirement
Valve Certificate API 6D/CE/ISO9001/ISO14001
Delivery Detail Shipped in 4 or 6 weeks after payment
Payment Terms L/C,D/A,D/P,T/T
Certificate Offered Packing List,Commercial   Invoice,Test Reports and Material Certificates,Certificate   of quality and quantity, Seller’s Certificate of Guarantee

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