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strange water problem

ed wallace
ed wallace Member Posts: 1,613
have a friend who says when taking showers the cold water drops off and she has adjust the hot water to keep from getting scalded she has a symonns valve any ideas this happens when no one else is running the water

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  • what's the model ?

    Sounds like the balencing spool acting up, may have to replace the stem assy... When doing it so, make sure u flush out the incoming lines!
  • Brad White_2
    Brad White_2 Member Posts: 188
    It may sound obvious

    but is there a restriction in the CW line? The Symmons valve is as good as they get with very good factory support.

    (I had the opposite problem, HW drop-off followed by falsetto soprano singing and simultaneous orb elevation.)

    Turns out my water filter was getting plugged (HW side only) and the Symmons valve was just doing it's job, balancing to pressure and temperature. Crud will do some blocking too as in my case.

    If the valve fails to hot I would suspect firstly a cold water blockage then a faulty Symmons valve. But be aware, the Symmons valve is not a true anti-scald valve. If you have scalding temperatures upstream you need a tempering valve anyway or set the temperature lower. The Symmons valve is pressure balanced but turn off one side and what is left on the other will continue to flow albeit less so. Temperature will be the same as enters. Valve can only do so much.
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