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arcsum68's avatar
arcsum68
Explorer
Nov 29, 2020

One way valve on hot water in shower

Hi, I am not able to find what I am looking for and was hoping someone could point me to some literature or instructions on adding a one way valve to the hot water side of the shower valve. I watched a video awhile back where they mentioned they did this, but offered no details. Per the video when you use the switch on the showerhead to shut off flow, the cold water will back fill into the hot water side since the pressure is greater and thats why when you turn it back on it will be cold for a few seconds. By adding a one way valve to hot water side that cold water cannot get into the hot water side. Any recommendations on how to accomplish this?
  • MrWizard's avatar
    MrWizard
    Moderator
    Dec 10, 2020
    I replaced my shower valve last year
    I wanted to do a thermostats valve setup
    Could Not find any with the right spacing
    So I with a standard replacement

    I did not think of using a backing plate and the cutting board idea was perfect,
    Here in my 1995 Bounder the plumbing access for the waterline connections of the shower valve is in my bedroom wall, behind a small cover held with 4 screws

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