What is the proper spacing for closely spaced tee's

Mike202

What is the proper spacing for closely spaced tee's for 1" branches off 2" main?

DanHolohan

as close as possible

but not more than 12"

Steve Ebels

I think

The rule of thumb is no more than 4 pipe diameters apart. Example: If your main loop is 2" it would be 8". Like Dan said, the closer the better. Use the 4 diameter rule as a worst case.

Mark J Strawcutter

between sets

isn't there also a minimum distance between the return from one set and the supply from the next set?

Mark

DanHolohan

No, there isn't

At least not that I've ever heard of, Mark. The goal is to eliminate pressure drop in the common piping. Each circuit stands on its own once you've done that and spacing between circuits shouldn't be an issue.

Mark J Strawcutter

I found it

Here's a posting from the wall a while back:

>Date: January 20, 2003 11:55 PM
>Author: Gary Wilson (gary@wilsonph.com)
>Subject: One more tip

>I went to the Holohan school of Primary/Secondary. Please
>excuse me if I'm wrong, but isn't there supossed to be 8
>pipe diameters between the sets of take-offs? One space
>saving tip is to run a batch of secondaries off of the
>lower header, and just offset around the upper group. Then
>again, if you have the room, it does look sweet the way
>you have it.

Nobody ever disagreed so I assumed it was correct :-)

Mark

DanHolohan

That applies

only where the secondary flow is greater than the primary flow.