Check Valves
Rated Working Pressure |
69.0MPa~138.0MPa |
10,000psi~20,000psi |
Nominal Size |
11/2",2",3",4" |
Temperature Rating |
-29ºC~121ºC(PU),-46ºC~121ºC(LU) |
-20F~250F(PU),-50F~250F(LU) |
Service |
Standard,Sour Gas |
Application |
Fracturing,Cementing,Acidizing,Testing Lines |
Embark on a seamless journey with our high-performance check valves, an essential instrument in high-pressure pipelines. They masterfully manage the one-way flow of fluids while expertly preventing any backward surge, thereby ensuring the utmost protection and safety of your pipeline infrastructure.
The 'API 6A Check Valve' boasts self-reliant opening and closing mechanisms, elegantly responsive to the flow dynamics of your medium. Perfect for clean mediums, this valve isn't suited for those with solid particulates or heightened viscosity, thus ensuring optimal performance and longevity in appropriate applications.
Design Features:
Experience the epitome of engineering excellence with a design that radiates rationality, ensures reliable sealing, and exudes aesthetic allure.
Enjoy the swift and agile closure of the valve disc, promising both rapid response and flexible operation.
Benefit from a low maintenance cost that maximizes operational efficiency.
Experience long-term reliability with no necessity for frequent lubrication or maintenance, streamlining your operational demands.
Our versatile check valves come in three sophisticated types: top-entry, dart, and flapper. The top-entry and flapper versions include completely encapsulated flappers for enhanced abrasion resistance, mainly utilized in fluid services. Dart check valves feature a robust dual seal system of stainless steel and seal ring, tailored specifically for gas services.


