Lift Check Valve

Spring forced type seal with great seal performance Free maintenance design Integral type forged body Hard alloy sealing face ensures great erosion resistance


  • Warrenty Period 18 months after shipment or 12 months after use
  • MediumOil, Gas, Mud, H2S、CO2 and Others
  • Performance RequirementPR1~2
  • Specification GradePSL1~PSL3G
  • Connection TypeThreaded , Flanged or Union connected
  • Material ClassAA、BB、CC、DD、 EE、FF、HH
  • Nominal Diameter 1-13/16“-4-1/16
  • Working Temperature-46°C~121°C(LU)
  • Working Pressure3000PSI~15000PSI

General Description

The check valve's main function is to prevent medium flows backward, achieving the release of the medium. Lift check valve's main components are valve body, bonnet, disc, seat, spring. When the fluid flows along the desired direction, the fluid overcomes the spring force to push the disc, thus opening the valve and allowing the fluid to pass. When the fluid comes from the negative direction, the fluid pressure and spring force impact the disc simultaneously, then the valve is sealed.


Specifications

Design & Manufacture:API SPC 6A
Connection:Threaded , Flanged  or Union connected
Nominal Diameter:  1-13/16“-4-1/16"
Working Pressure: 3000PSI~15000PSI
Material   grade: AA-HH
Body    Material: Carbon steel 10#,20#,1045; Low-alloy steel ASTM4130; Stainless steel 410,17-4PH,316;YG8;CRA,CRAb


Application

Lift check valve has large resistance. So it is generally installed in the conventional kill manifold.


Structure Features

1.Spring Forced type Seal with great seal performance;
2.Free maintenance design.It is no need to maintain during service life;
3.Hard alloy sealing face ensures great erosion resistance;
4.The direction of installation is not limited as the valve adopts lifting structure;
5.The Valve is designed with Integral type forged body, which could be applied to all range of pressure ratings




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