The working principle of a pressure-sealed swing check valve relies on fluid pressure and the disc's own weight. When fluid flows toward the valve, the pressure acts on the disc, causing it to rotate around the pivot pin and open the valve. The disc remains open due to the fluid's momentum, allowing normal flow. When the flow stops or reverses, the disc rotates back under its own weight or spring force to close the valve, preventing backflow.
Applicable Standards:
Check Valve, BS1868
Steel Valves, ASME B16.34
Face to face ASME B16.10
End Flanges ASME B16.5/ASME B16.47
Butt Welding ends ASME B16.25
Inspection and test API 598
Material: CF3M
Size Range: 2″~36″
Pressure Rating: ASME CL, 150, 300, 600, 900, 1500, 2500
Temperature Range: -196°C~600°C
Design Description:
– Bolted Bonnet and Pressure Seal
– Welding seat rings or Renewable seat rings
– Fully open disc
– Zero Leakage
– Flange Ends
– Buttwelding Ends
– Horizontal or vertical service.
