Oil Drilling Parts Diesel Overflow Valve

We are offering oil drilling parts diesel overflow valve. Description overflow valve: when the system pressure exceeds the setting value, the part of the compressed air from the vent overflow, and maintain the system pressure in the process of overflow basically stable, thus the overload protection function (also called safety valve). direct acting and pilot operated relief valve points two kinds.according to its structure can be divided into: piston, diaphragm and ball valve type.