Maverick Valves MVMCK50/75 check valve is often used in the oilfield when drilling, lift check valve is designed and manufactured in accordance with API 6A.
The API 6A check valve incorporates a metal-to-metal seal for high pressure, high-temperature environments where elastomer seals cannot be used. Primary applications for the check valve are high-pressure mud choke manifolds and high pressure Christmas tree injection and kill lines. The MS Check Valve can be used with oil, gas, water, or drilling fluids and are available in all temperature and material classes as well as product specification levels (PSL) as specified in API 6A. It is available in standard pressure ratings from 3,000 to 20,000 psi and bore sizes from 1-13/16 to 7- 1/16 in.