Assistant valve enterprise to win the world
Size:NPS1/2"~12" (DN15~300)
Pressures:Class150~600
Material:Carbon steel、stainless steel
Design:API 6D
End Connection:flange
- Low temperature impact test of valve material to ensure that the material will not brittle damage at low temperature.
- For low temperature check valves below -101℃. Valve parts are cryogenically treated before finishing.
- Valve internals are selected to avoid jamming, occlusions and bruising during frequent operation.
- Bolted bonnet; Swing type and lift type disc; Metal sealing surface.
- Connection between body and bonnet The body and bonnet of check valves are generally connected by stud + nut.
- Middle flange gasket check valve generally adopts stainless steel + flexible graphite wound gasket; Metal ring pads can also be used.
Low temperature carbon steel check valves generally use forged seats, seat sealing face spray welding customer specified alloy.