(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 2 of 2

Thread: Did I buy the right the right rough in valve & trim??

  1. #1
    DIY Junior Member Lee185's Avatar
    Join Date
    Feb 2013
    Paradise N. Californnia

    Default Did I buy the right the right rough in valve & trim??

    Hello, new member here but I've been lurking for a month or so.

    I'm remodeling the guest bathroom, I tore out the old tub & I am replacing it with a 3' X 5' shower stall. We're planning for a fixed shower head on the front wall over the valves & an additional, Rain shower head centered on the stall overhead.

    On the advice of a local plumber I ran new 3/4" copper services from the main's, but the rough in valve I bought is 1/2". Its the only rough in valve that I could find that was a combo Thermostatic / 3 function diverter valve, but from all I can gather it only comes in 1/2"

    Trim & Handles

    Moen T4111 BN Kingsley Moentrol Shower Valve with Built-in Three Function Transfer Valve Trim - Brushed Nickel

    Rough in Valve

    Moen 3330 Moentrol Three Function Transfer Valve (1/2" CC)

    My biggest question is, if I reduce my 3/4" services to 1/2" at the valve, will I have enough water pressure to run both shower heads.

    The 3/4" to 1/2" reducer would be within 6" of the rough in valve, in order to get as much 3/4" volume & pressure as close to the valve as possible.

    I've been looking for a 3/4" to 1/2" reducer that I could sweat directly to the rough in valve, but all I can come up with so far is the standard 3/4" X 1/2" reducer coupling.

    Thanks, Lee

  2. #2
    DIY Junior Member patma's Avatar
    Join Date
    Jan 2013


    1/2 copper: The flow rate is about 7.5 to 10gpm Plenty for up to 3 low flow shower heads. Restrictions in the heads are 2.5gpm is I remember correctly. Pressure can vary due to many factors. If you have good pressure, you should have plenty of flow for two heads running concurrently.

Similar Threads

  1. Need seriouse help with my diverter valve trim
    By boardable in forum Shower & bathtub Forum & Blog
    Replies: 12
    Last Post: 12-04-2012, 05:34 PM
  2. Shower-only valve/faucet/trim
    By Optiker in forum Shower & bathtub Forum & Blog
    Replies: 10
    Last Post: 12-13-2010, 05:56 PM
  3. posi-temp valve and new trim
    By emmersmom1950 in forum Shower & bathtub Forum & Blog
    Replies: 4
    Last Post: 10-11-2009, 08:15 AM
  4. shower valve trim mystery
    By wallygater in forum Shower & bathtub Forum & Blog
    Replies: 3
    Last Post: 02-18-2009, 09:03 AM
  5. Replacing Trim and using old Moen Valve
    By jcm533 in forum Shower & bathtub Forum & Blog
    Replies: 5
    Last Post: 10-01-2008, 12:31 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts