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Check valve (single flow valve)

Check valve (single flow valve) is designed by poppet valve and spring. It can be driven by fluid to prevent medium backflow. It is suitable for high pressure and high temperature service places, including high pressure mud choke manifold, high pressure Christmas tree injection equipment and choke line.

Nominal size 2-1/16″ to 4-1/6″
Rated pressure 2000-15000 psi
Temp. class LU (-46 to +121°C)
Standard class PSL-1 ~ PSL-3
Performance class PR1~PR2
Material class AA, BB, CC, DD, EE, FF, HH
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