Shaanxi Rongle Petroleum Machinery Co.,Ltd is one of the best China ja-3 shear relief valve threaded connection manufacturers and suppliers,Website:://.snrle.com, and also a professional company and factory, welcome to import quality ja-3 shear relief valve threaded connection products from us.    JA-3 shear pin safety valve is used in general promotion of the current high-pressure spray rig; also be used for  other media (oil, water, etc.) of high-pressure circulatory system.When safety valve cutted off, it insures the mud pump do not to exceed the rate working pressure range.  Features    Opening and closing neatly    Piston's pressure bearing area is small    Reposition simply    Safety valve may used for multifold mud pump