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valve throttling

valve throttling

valve throttling

(OP)
I have a butterfly valve in a recirc line throttled back,on the Discharge side, on that valve it is tagged to keep closed 5 "clicks", what purpose would this serve? Water is the element for a scrubber system.

RE: valve throttling

A wild guess is that the pump curve is not well suited to the piping system.  Perhaps the valve attempts to make a bad pump selection workable.

RE: valve throttling

It might be to create a DP in the flow path.

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