Installing thermostatic mixing valve

Discussion in 'Shower & Bathtub Forum & Blog' started by bimmer, Oct 9, 2007.

  1. bimmer

    bimmer New Member

    Joined:
    Sep 21, 2007
    I am installing a thermostatic mixing valve in my shower. Instruction manual says to install water hammer arrestors. The shower that I am replacing had no such arrestors and there was no noise from the pipes. That being said do you think arrestors would be required in this case? Also what is the best way to securse the mixing valve to the 1x4 backing? The valve is fairly heavy.
     
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Always follow the manufacturer's instructions - if they say to install arrestors, do it. Use the piston/cylinder type, not just a simple air chamber. Oatley and Sioux City make some, and I'm sure other companies.

    Some of the valves have screw holes to anchor them, some you need to use some straps or clamps. Sometimes, you have to get creative.
     
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  4. jimbo

    jimbo Plumber

    Joined:
    Aug 31, 2004
    Location:
    San Diego
    I don't have any experience with the thermostatic valves....too pricey, I guess! But I do think they use a wax-type cartridge in the temperature regulating section. I can envision where this type of device would not be happy with any water hammer, so I understand the recommendation. I would try to find a place, near the shower but not in the wall, to put these if at all possible.
     
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