LPG storage tank tightness test operation

1. The valves that have passed the acceptance should be placed separately. Do the valve shell test first, and then the valve tightness test.
2. Valve tightness test.

The operating steps of the valve tightness test are basically the same as those of the valve shell test. The test pressure is 1.1 times the nominal pressure, and the test pressure is maintained for 1 minute. If the shell and packing have no leakage, it is qualified.