What is the optimum ratio of eye size to suction line? I am considering a reducer from suction line to the size of eye. If the suction line is 1.5 times bigger than the eye, will it cause any decrease in the head of the pump?
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Re: Suction line size effect on pumps
27 June 2007 at 1:29pmIm unsure what youre referring to as the eye size. The eye normally refers to that part where the liquid first enters the impeller. I hope you mean the bore of the suction nozzle of the pump, in which case there should always be a reducer at that point from the suction piping that should be at least one size larger than the suction nozzle. If the nozzle is on a horizontal configuration, then the reducer should also be an eccentric design with the flat side on top.
On my website www.practicalpumping.com you will find more details in an article entitled, The Pitfalls of Pump Piping which you can download at no charge. This white paper is also on located here at ChemicalProcessing.com.
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