Must a check valve be installed at the outlet of a centrifugal pump?
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I’d like to ask the experts! Is it necessary to install a check valve at the outlet of a centrifugal pump? Are there any requirements in the regulations?
It depends on the materials as well; it would be better if a check valve is installed at the outlet of the slurry pump
Installing a check valve at the pump’s outlet can prevent the pump from reversing due to liquid backflow, which might occur if the outlet valve is not closed for some reason; this reversal can lead to the loosening or falling off of components such as nuts on the rotor. https://bbs.hcbbs.com/thread-963978-1-1.html
There shouldn’t be a need for that, right? Just install a manual valve or an electric valve, wouldn’t that suffice?
Personally, I think the first option is the correct one, depending on the requirements of upstream and downstream materials.
Not necessarily; it depends on the installation conditions and piping layout
An expert came to our company for an inspection and identified issues that needed to be addressed. He said that a check valve should be installed at the pump outlet, and that a grounding wire should be attached to the inlet filter of the pumps used for handling light oils. I’m not quite sure about this; I don’t know which standard requires it
In my opinion, it is quite necessary to install check valves; sudden power outages or similar issues can easily cause the pump to reverse rotation, which may lead to the detachment of the pump impeller in certain models, thereby having an impact on the equipment as well.