For two parallel circulation pumps, can the outlet check valve be removed?
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Two 1000KW heat network circulation pumps operate in parallel, with hydraulic check valves installed at the outlets of each pump. I want to know if it’s possible to remove the check valves at the outlets of the two pumps.
The purpose of installing a check valve is to prevent fluid from flowing in reverse, such as when a single pump stops operating or when pumps connected in parallel start or stop!
No, in case one of them stops working, it will damage the pump
No, it’s to prevent the pump from reversing; reverse rotation poses a risk of the locking nut coming loose as well as the impeller becoming detached
It cannot be canceled. It can be installed on the main pipe.
A check valve should be installed on the outlet pipe of each pump; it is not very useful to install one only on the main pipe.