Pipe size to shower
#1
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Join Date: Aug 2008
Location: Albany, NY
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Pipe size to shower
Hi,
Im putting in a walk in shower using Delta products which all use 1/2” plumbing, including inlets. I’m using Pex with home runs to a 3/4” x 1/2” manifold (3/4 in, 1/2 out). I read somewhere that I should run 3/4” hot n cold to the shower and then reduce to 1/2” at the mixer valve. This makes no sense to me. Why would I run 3/4” when the valves and sprays are 1/2”?
Pete
Im putting in a walk in shower using Delta products which all use 1/2” plumbing, including inlets. I’m using Pex with home runs to a 3/4” x 1/2” manifold (3/4 in, 1/2 out). I read somewhere that I should run 3/4” hot n cold to the shower and then reduce to 1/2” at the mixer valve. This makes no sense to me. Why would I run 3/4” when the valves and sprays are 1/2”?
Pete
#2
Why would I run 3/4” when the valves and sprays are 1/2”?
No good reason I can think of, never seen it done that way before. A good reason to use 1/2" pipe is to reduce the time and waste of water trying to get hot water to the shower faucet.
#4
I have 3/4" PEX trunk lines in my house with individual 1/2" lines T off for each fixture. I've never had any issue with pressure or flow volume but all my fixtures are modern low flow style.