Petrochemical Products

API 6A Check Valve, also referred to non-return valve, or one-way valve, is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. We can produce both swing type check valve and lift type check valve. Available in bore sizes from 1-13/16" to 7-1/16" and pressure ratings from 2,000 to 15,000 PSI. The standard material is forged AISI4130 alloy. All of our Check Valves are fully designed, manufactured, and tested as per API 6A and API 16C standards and have been widely used on oilfield wellhead Christmas tree and manifolds with reliable performance. 

Mud Pump Parts Valve assembly/Valve body/Valve seat
1.The valve body and valve seat of valve assembly are made from high-quality knot steel treated with 20CrMnTi carburizing and
quenching processes.
2.The surface hardness is greater than HRC 60.
3.The conical surface is ground finished to ensure a high requirement for roughness and geometric dimension.
4.The rubber sheet is made of polyurethane material which improves the service life of valve assembly, the operational use time is more than 300 hours.