Shower and hand held 3/4 valve

Discussion in 'Shower & Bathtub Forum & Blog' started by scooterbase 001, Dec 1, 2011.

  1. scooterbase 001

    scooterbase 001 New Member

    Joined:
    Dec 1, 2011
    Location:
    Santa Clarita Ca.
    Will a 3/4 inch valve with 8 inch shower head and hand held work if I only have 1/2 inch pipe to it or should I run 3/4 all the way to the valve?
     
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    What is the gpm rating of each, and will they ever both be on at the same time?
     
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  4. scooterbase 001

    scooterbase 001 New Member

    Joined:
    Dec 1, 2011
    Location:
    Santa Clarita Ca.
    I'm not sure what the gpm is, but it's an exterior valve with a n 8 inch rain head and all 3/4 piping from valve up to the head, I would think this would need a good volume of water to be strong enough.
     
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Federal regulations restrict any single showerhead to 2.5gpm (this is measured at a specific pressure). So, if you only have two possible on at one time, a 1/2" line should be okay. If you want to add stuff like body sprays, or an additional head, it would not. If your house pressure is marginal, no supply will produce your desired effects. Don't expect high pressure out of a rainhead...it isn't very forceful.
     
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