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Thread: Delta Monitor Question

  1. #1

    Default Delta Monitor Question

    I have just installed a Delta Monitor #1748 Shower/Tub valve and I was checking it out to prior to installing the tub surround. I have good flow when I turn on the hot water only, but if I turn on the cold water only and adjust the temperature knob to cold, I just get a dribble. Am I doing something wrong, or is it a bad valve? The o-rings and seats are installed correctly per the instructions.

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    Default Monitor

    It sounds like the pressure balancing spool is stuck at one end. Sometimes you can take the cartridge and tap it against something to get it moving again.

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