How To Do Pressure Test For Diaphragm Valve

In the diaphragm valve strength test, the medium is introduced from either end, the valve flap is opened, and the other end is closed. After the test pressure rises to the specified value, it is qualified to see if the valve body and bonnet have no leakage. Then reduce the pressure to the tightness test pressure, close the valve flap, and open the other end for inspection. No leakage is considered qualified.