Grohe Grohsafe Pressure Balance Valve

Discussion in 'Shower & bathtub Forum & Blog' started by ccwenk, Feb 5, 2009.

  1. ccwenk

    ccwenk New Member

    Messages:
    4
    I just got done installing this valve in a new shower I built. Based on what I was told (and sold) at the plumbing supply, I installed a diverter for a hand shower on the output of this valve. Now (too late), I am reading the instructions and it says not to install a shut-off on the output leg of the valve. I am worried that I have effectively done that if I use a hand shower with an on/off function.

    What is the reason for not having a shut-off on the output of the valve?

    Thanks for your help.
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,292
    Location:
    Cave Creek, Arizona
    valve

    Not sure about this valve, but usual reason is that you might tend to use THAT on/off valve instead of the one in the valve, thus subjecting portions of the valve to unusual pressures, and possibly creating back flow or crossover problems in the piping system.
  3. ccwenk

    ccwenk New Member

    Messages:
    4
    Thanks for the fast reply. That makes sense to me. I guess that I will need to make sure that the water is always shut off at the main valve after the shower is used.

    Any other ideas or advice??
Similar Threads: Grohe Grohsafe
Forum Title Date
Shower & bathtub Forum & Blog Grohe Grohsafe 35015 Universal Pressure Balance Rough - In Valve Oct 30, 2011
Shower & bathtub Forum & Blog Grohe Grohmix stop valves Jul 8, 2014
Shower & bathtub Forum & Blog Grohe Retrofit Shower System Jul 5, 2014
Shower & bathtub Forum & Blog Disassemble Grohe 28 536 Relexa Body Spray - discontinued style Jun 7, 2014
Shower & bathtub Forum & Blog Shower schematic for Hansgrohe or Moen hand-shower, shower head and rain shower Jun 5, 2014

Share This Page