Check valve, that is what I meant to say earlier.
Anyway, I have seen where a mixing valve was added to add a little hot water to the cold water entering a toilet tank to prevent condensation under heavy use. Not sure if that could be it.
MC
Check valve, that is what I meant to say earlier.
Anyway, I have seen where a mixing valve was added to add a little hot water to the cold water entering a toilet tank to prevent condensation under heavy use. Not sure if that could be it.
MC
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