Must the emergency pressure relief manhole be installed vertically upward?
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Must the emergency pressure relief manhole be installed vertically upward?
Under normal circumstances, it is installed vertically on the top of the tank.
Pressure relief manhole? ? ? Do you mean the function of the valve, the function of the safety valve?
Is this what the original poster is talking about? ?
Yes, an emergency pressure relief manhole! !
This name is a bit strange – emergency pressure relief, so why still use bolts? Isn’t a manhole meant for people to pass through?
It’s equivalent to replacing the flange cover with a safety valve
It’s still a manhole; only the manhole cover has been replaced with a device similar to a safety valve.