Return Pump Plumbing - Efficient Design Question

Ecotech Marine

psumms

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The time has come to re-plumb my return pump to make better use of space in my sump... Did I read somewhere once that there was a recommended length of straight pipe on the pump outlet before adding any bends to aid efficiency? I know on the intake there should be at least five times the diameter of the pipe, just wondering if a similar rule applies on the outlet side?
 
AS

kschweer

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I always try to come straight out of the pump unless there is no other choice. I don’t think there is a set length or anything but I would go at least to the top of the sumo before adding any 90’s etc. Also if you have the room the use of 2 45’s instead of one 90 will help a bit. In most applications with our tanks not much is lost due to 90’s or other fittings.
 

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