Return Pump Plumbing - Efficient Design Question

[psumms]

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?

 

[Daniel@R2R]

bump for any plumbing experts. @kschweer any thoughts?

 

[psumms]

Thanks Daniel. This is still a current question, I've purchased the parts but not gone any further yet so any advice is still very much appreciated.

 

[kschweer]

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.