On the bypass function of the outlet check valve in centrifugal pumps
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Regarding some centrifugal pumps whose medium is water, is there a bypass function added to the outlet check valve?
Reply to 2# wx2860: How to fill it? Backflow from exports? When is it needed?
It’s not needed under normal circumstances......
The pump body has a pre-heating function to prevent freezing in winter.
Reply to 4# Mengzhong Yansheng: When is it generally used and what is its purpose?
Reply to 5# fatalitywcs: Can’t the pump body be preheated using the normal inlet route?
Use normal import preheating; the temperature rises too quickly
It is used for heat pumps. 111111
Reply to 8# cycjq99: How is it specifically implemented? Can a pump be warmed by using another online pump, from the outlet of that pump to the pump body? What if the fluid temperature of other online pumps is not high?
Reply to 6# ying*ao*e: It is generally used to empty the medium inside the pipe; the possibility of it being a filling pump is low. Waiting for experts to respond~