1/2" valve big enough to run 2 showerheads?

kirkhallNovember 5, 2012

I want a system in my shower that would be able to run 2 showerheads simultaneously (handheld + regular head or smallish rainhead). No jets or body sprays.

Is a 1/2" rough in valve large enough, or would I be safest with a 3/4" rough in valve?

Is 3/4" overkill?

Thank you for reporting this comment. Undo
mongoct

You need to look at, or at least consider, the existing plumbing that comes before the shower valve - the size of the tubing, the number or fittings, etc.

If the supply tubing is 1/2", then you may not be able to take advantage of all of the flow-through that a 3/4" shower valve would provide had it been plumbed with 3/4" supply tubing on the shower's branch lines.

That said...yes, 1/2" supply tubing can supply enough water to feed two shower heads. Shower heads are limited to a max flow of 2.5GPM, and half-inch supply tubing that doesn't have any wacky restrictions (too long of a run, too many twists and turns in the run, flow restictions due to sediment/corrosion, decent water pressure, etc) can feed 5GPM.

As to your valve being able to supply sufficient flow through to the two heads, that should not be an issue. Just check the valve's pass-through, it should be above 5GPM.

If you do have flow restrictions, you could help performance by using a shower head with less flow through.

    Bookmark   November 6, 2012 at 11:41AM
Thank you for reporting this comment. Undo
kirkhall

Thanks Mongoct!

    Bookmark   November 9, 2012 at 11:58AM
Sign Up to comment
More Discussions
Final Decisions - Lighting and Countertop - "Spa-Like" or "Dreary"?
We have been in the middle of a very long & drawn-out...
AHMIowa_NJ
tile layout help master bath
I am planning to use 18 x18 on the floor and same tile...
abick2
Anyone installed a Geberit in wall tank?
DH is getting ready to do the install in a 2 x 4 wall,...
numbersjunkie
Where to place/plan for grab bars
We are remodeling our hall bathroom (and kitchen)....
crl_
White tubs not really white?
For our new build, I have chosen Imperial Blanco white...
mom2sulu
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™