water cuts of when hot?

Discussion in 'Shower & Bathtub Forum & Blog' started by jz4379, Mar 21, 2009.

  1. jz4379

    jz4379 New Member

    Mar 21, 2009
    Hot water issue

    I have just moved in to a house that was build in 2003. We have hot water every where in the house but, the master bath tub. The shower and 2 sinks in the master have hot water. When I turn on the water to the bath its fine when it on cold but, the further I turn it to the hot water side it cut off. I have cleaned the valves already, any ideas to help me out.

    Last edited: Mar 21, 2009
  2. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego, CA
    stuck balancing spool.
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  4. jz4379

    jz4379 New Member

    Mar 21, 2009
    What is a stuck balancing spool? how do you fix it??

  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    To meet federal requirements, most valves today have what is called a pressure balance valve...this keeps the actual balance of hot to cold the same (or at least close) if say someone flushes a toilet or changes the flow or balance between the hot and cold supplies.

    To do this, most use a sliding valve (spool valve)- nominally, it is centered and lets both hot and cold supplies flow unrestricted. If it gets stuck at one end, it will be blocking some or all of the flow. It depends on the brand how to remove it. Sometimes you can clean it, add some plumber's grease, and it will work like new, sometimes you need to replace it. You'd have to know the brand and model for further info. Often, you can find parts breakdown on the manufacturer's website, but you need to know the brand first. Post a picture, and maybe someone can help.
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