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.
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Design Features
Design standard as per: BS1868, ASME B16.34, GB/T 12235, JB/T3595.
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.
Product Range
Body material: carbon steel, stainless steel, alloy steel
Nominal diameter: 1/2″～24″（DN15~DN600）
Pressure range:Class150～2500（PN10~PN420）
End connection: RF, RTJ, BW
Working temperature:-29℃～560℃
| Brand | 3D |
| Valve Type | Pressure Seal Check Valve |
| Valve Material | Cast steel, stainless steel, special alloy, 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 |
| Port | SHANGHAI |
| 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 |
Check valves also known as countercurrent valves, check valves, back pressure valves and one-way valves. These valves are automatically opened and closed by the force generated by the flow of the medium itself in the pipeline and belong to an automatic valve. Check valves are used in pipeline systems. Their main functions are to prevent medium backflow, reverse pump and drive motor, and release of container medium. Check valves can also be used to supply pipelines for auxiliary systems where the pressure may rise to more than the system pressure. They can be divided into swing type (rotating according to the center of gravity) and lifting type (moving along the axis).