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API Shear pin relief valve for mud pumps Specifications 1 Shear pin relief valve 2 Type:JA-3 3 Flange / screw thread connection 4 Max pressure: 5500 PSI 5 Max pressure:35Mpa Shear pin safety valve can be connected in two ways, one is threaded connection, and the second is flange connection. It is an insurance of mud pump, before the pump working, according to the cylinder and piston specification determines the rated pressure, the safety valve cover off the shear pin on the clipboard into the pin hole. If the pump head pressure exceeds the rated pressure, shear pin will be cut and mud from the side of the vent valve, play a protective role.

Safety Valve or Pressure Relief Valve is an important spare part of mud pump. The safety valve changes the pressure of discharging by changing the position and realizes easy operation and reliable performance.

Shear relief valve is used at the discharge part of the mud pump.JA-3 shear relief valve changes the discharging pressure by changing the position of the shear pin ,which is operation easy and work reliable. JA-3 type of shear relief valve is used for high pressure drilling rig operation and other medium (water or oil) with high pressure circuit system. To compare with spring type or diaphragm type of relief valve it has the following features: 1. It can be opened , closed and Reset simply; 2. Pressured piston area is small; 3. Be interchangeable and easy to be connected with other mud pump.