Stainless steel lined flange cover
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Technical requirements for stainless steel lined flange covers - Is it wrong to pass compressed air of no more than 0.1MPa into the vent hole to detect leaks?
This is written in a standard way. Although you have to look at the problem with suspicion, I don’t think there is anything wrong with this sentence. Could it be that the poster is worried that the 0.1MPa test cannot be detected, the pressure is too small, or something?
Standard provisions stipulate that the flange cover should be equipped with M6 ventilation inspection holes and 0.1MPa compressed air leakage detection.； However, the standard of JB/T4736-2002 "Reinforcement Ring" is M10 screw hole, 0.4~0.5MPa compressed air leak detection ； The standard JB4700-2000 "Pressure Vessel Flange" stipulates that the flange leak detection hole with a lining ring is an M10 screw hole, and 0.4~0.5MPa compressed air or 0.05MPa ammonia leak detection ；
The standard stipulations should be correct. You may think it is a bit low compared with the air tightness test pressure of the reinforcing ring.
I have had this problem before using lined flange covers, because I felt that the leak detection pressure was a bit low.
I think there should be no problem with the standard: loveliness:
I think it's correct, as long as it can play a role in detecting leaks.
The standard stipulates that it should not be greater than 0.1MPa, so if it is 0MPa, is it okay? If I don’t check, is it okay? Then why should I open holes to detect leaks?
As long as it is based on standards and the standards are not outdated, there will be no problem~