plumbing dual overflows

fernalfer · Apr 1, 2016

I have a 120 gallon dual overflow tank. I will be using the standard durso standpipes. The overflows are in the center pic attached. I'm at the plumbing part of my build and i'm finding it difficult to find the best way to plumb this. I have unions and cepex Ball valves but when incorporating them i feel like i run out of room. Also crossing the left return and the left drain line seems like it may be a task.

I am running all 1 inch piping mixing ultra flex PVC and regular PVC. I will reduce back down to 3/4 right before i get to the tank on the return lines.

Does anyone have pics of how they did the plumbing on their dual overflows or have any advice on the best way to do this?

here is a pic:

mcarroll · Apr 1, 2016

I'm not sure I understand the problem. What are the unions and ball valves for?

(You don't need unions on a drain...optionally just for equipment or plumbing that will need to be disconnected routinely.)

It looks like you're running a standard drain/return.

One (optional) union at the pump should be fine....usually the pumps are small enough on a tank this size that you can just as easily spin it around to get it off a threaded fitting. After that, you need a Wye (better) or Tee, but after the split you theoretically want no obstructions at all so the pump can run unimpeded.

I would take the 1" all the way to the point of service unless there's a practical issue preventing you from doing it.

Keep it simple!!