The JA-3 type of shear-type safety valve is used in the high-pressure jet rig123.net' target='_blank'>drilling rig currently widely used; it can also be used in high-pressure circulation systems of other media (oil, water, etc.).

Compared with spring-loaded and diaphragm-type safety valves, this valve has the following features:

         1. Flexible opening and closing;

         2. The pressure piston area is small;

         3. Simple reset;