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.
