The production of valves is a complex yet simple process. The production cycle of ordinary valves such as gate valves, ball valves, globe valves, butterfly valves and check valves is generally three days. After the valve is produced, it must undergo various performance tests, the most important of which is the pressure test. The pressure test is to test whether the pressure value that the valve can withstand meets the requirements of production regulations. The following are the precautions for valve pressure testing in general: (1) In general, the valve is not tested for strength unless the valve body and bonnet are repaired or corroded. For the safety valve, its…