PVC pipe flow

im curious what feedback you will get on this. i know the size and or design of your sump is going to play a big role with you flow rate.

Deano1956;2091510; said:

Does any one out there know how many gallons per hour can flow through 1 1/2" and 2" pvc pipe with 4 90 degree elbows and about a 30" drop (if that matters) and this is gravity or suction to my sump, I have looked online and the charts that I found I dont understand so I hope some of you guys know, thanks

Click to expand...

Do you want to know the flow from the tank to the sump, from the pump back to the tank, or both?

Here is a fairly good drain size calculator

http://www.reefcentral.com/calc/drain.php

just put in the GPH you are looking to get, and it will tell you what diameter pipe to go with. I don't think the 90 bends are going to slow it down a ton when gravity is tugging on it.

1 1/2" pipe should handle about 1200 GPH

2" pipe should handle about 2000GPH

These numbers are little underrated for their diameters so that should account for any losses in the bends.