Quote:
Originally Posted by JGibson
Those pop-out valves are a safety feature that will pop if the pressure in the system gets too high and the expansion tank relief valve fails which they do especially if you don't test them very often.
I’ve had this happen when the pop-up valve engaged before the expansion take the safety valve. The expansion tank has waterlogged no room for expansion.
|
Note that the Accor valves may close with high pressure, but that is not a design safety feature of the valves. According to Accor, their push-pull valves should not close under high pressure.