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owlyn
Premium,MVM
join:2004-06-05
Newtown, PA
reply to tberg

Re: Water leak under slab

When you do the Pex, run 1/2" as a feed and then branch off 1/4" to the fixtures. Works great.



Jack_in_VA
Premium
join:2007-11-26
North, VA
kudos:1
Reviews:
·Millenicom

said by owlyn:

When you do the Pex, run 1/2" as a feed and then branch off 1/4" to the fixtures. Works great.

1/4" to the fixtures is choking it down way too much IMO.


owlyn
Premium,MVM
join:2004-06-05
Newtown, PA

It works very well for me. Besides, most fixtures are 1/4" fittings anyway, no?



Jack_in_VA
Premium
join:2007-11-26
North, VA
kudos:1
Reviews:
·Millenicom

1 edit

said by owlyn:

It works very well for me. Besides, most fixtures are 1/4" fittings anyway, no?

If it works for you fine. It doesn't work for me. There's a big difference in 1/4 (actually 1/8 id) for any distance and 3/8 (1/4 id) at the fixture itself.

Actually the above is for copper. I couldn't find any listing for 1/4 PEX. From their website:

PEX Tubing Technical Specifications and General Installation Recommendations



pressure

@blackberry.net
reply to owlyn

Most fixtures are 3/8"not 1/4".



owlyn
Premium,MVM
join:2004-06-05
Newtown, PA

I keep thinking of everything as 1/4". Wherever I said 1/4 should be 3/8.


robbin
Premium,MVM
join:2000-09-21
Leander, TX
kudos:1
reply to Jack_in_VA

said by Jack_in_VA:

There's a big difference in 1/4 (actually 1/8 id) for any distance and 3/8 (1/4 id) at the fixture itself.

That would only be true if you are talking about refrigeration tubing. Plumbing tubing is sized by ID as the chart you posted shows so 3/8" plumbing tubing has an ID of 3/8 but 3/8 refrigeration has an OD of 3/8".