No easy way to cut hot water from single handle shower faucet?

Discussion in 'Shower & Bathtub Forum & Blog' started by dejarnett, Feb 18, 2021.

  1. dejarnett

    dejarnett New Member

    Joined:
    Feb 3, 2021
    Location:
    Texas
    We live in a rented house where we cover expenses <$500, but we have the freedom to do pretty much any improvements to the house we want.

    The bath/shower has a single handle that rotates counter-clockwise to both increase pressure and make the water hotter and a common diverter on the faucet.

    I like to take cold showers (logic of that is not up for debate, I started in 1977), so naturally with this shower, by the time I get any pressure at all, the temperature is warm. I thought I'd solve the problem by putting a ball valve at the hot water heater and simply close that when I wanted a cold shower.

    Surprisingly, when the valve is closed at the hot water heater, we get NO water through the shower faucet, even if turned all the way up. Everywhere else, the hot water is cut and cold water is flowing as expected. I would have expected to just have cold water when I turned the shower up.

    Is our only option changing the shower to 2-handle, if that would be feasible? I guess to do that we would remove the big round chrome faceplate that the handle comes through to hopefully reveal hot and cold water outlets?

    Thanks for any ideas.
     
  2. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    Right now just go outside and use the garden hose. What is the outside temp in your part of Texas?

    It'd be easier if you change the valve body out and trim, that is if you can get behind the wall. Delta makes a great valve body where the water flow is the longer handle and the small inter one is temperature. So you can have full flow with no hot water mixing in. I have two of these in my home.

    https://www.build.com/delta-r10000-unwshf/s665734?uid=1372557
    https://www.build.com/delta-t17097/s776636?uid=2003705
     
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  4. dejarnett

    dejarnett New Member

    Joined:
    Feb 3, 2021
    Location:
    Texas
    That faucet looks like exactly what I need. Not seeing a way to get behind the wall though.

    >> Right now just go outside and use the garden hose. What is the outside temp in your part of Texas?

    In the panhandle - frozen - haven't seen a temp even up close to 30s for a week. Just glad to get up into the 20s today.
    Besides, my wife wouldn't want the guys with straightjackets showing up to haul me off. Need to keep this inside.

    Thanks for the suggestion.
     
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    To satisfy the federal anti scald regulations, your valve is doing exactly what it was designed to do when you shut off the hot input. The pressure balance spool valve is activating.
     
  6. dejarnett

    dejarnett New Member

    Joined:
    Feb 3, 2021
    Location:
    Texas
    >> The pressure balance spool valve is activating.

    Didn't know about that. We don't have any small children, and have alot of calcium sometimes creating volume/pressure problems, so will look into if that's something I could remove.

    I guess that regardless of regulations, the Delta mentioned above won't have the spool valve - so that straight cold can come out?

    Thanks
     
  7. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
  8. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    I would consider installing a double stop at the lav or the toilet and running a cold hand shower line from there.
    The pressure balanced shower valve is a must for a rental unit to prevent scalding. It's a legal thing for the landlord so somebody doesn't sue him.
     
    Reach4 likes this.
  9. hj

    hj Master Plumber

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    You CANNOT remove the balancing unit. If you could/did you would lose the ability to control you water temperature in the whole house.
     
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