API 6A Swing check valve is designed as per API 6A 21th edition standard. API 6A Swing check valve flow in a single direction and end connections are complied with API Spec 6A, metal-to-metal seal creates a stable performance for high pressure, high-temperature conditions. API 6A Swing check valve is used for Chock manifolds and Christmas trees, we can offer the bore size from 2-1/16 to 7-1/16 inch, and the pressure range from 2000 to 15000psi.
 

API 6A Swing check valve design specification:
Standard Check gate valves are in accordance with API 6A 21th latest Edition, and use the right materials for H2S service according to NACE MR0175 standard.
Product Specification Level: PSL1 ~4　　　 Material Class: AA~FF　　 Performance Requirement: PR1-PR2　Temperature Class: LU
 

API 6A Swing check valve product features:
◆ Reliable seal，and the more pressure the better sealing
◆ Small vibration noise
◆ The sealing surface between gate and body is welded with hard alloy, which has good wear resistance performance
◆ The check valve structure can be Lift, Swing or Piston type.