tpr valve leaking

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by lewe, Feb 5, 2005.

  1. lewe

    lewe New Member

    Feb 5, 2005
    my tpr valve only leaks a small amount of water when the hot water heater is heating up . i have replced the tpr valve and it still leaks. i have checked the water pressure at an ouside faucet and the pressure is between 70- 80 psi unless the water heater is heating and then it has gone as high as 150 . i do not have a expansion tank and have been told my numerous plumbers that they dont use them . the water heater is only 3 years old . i have been told maybe i need a pressure reducing valve installed at the water meter . please help.
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    classic symptom of the reason an expansion tank is recommended. You would probably notice that you get more water out the valve if someone takes a long shower or otherwise empties the tank so that it has to heat a large volume of water. 70-80 pounds static is at the max recommended. An expansion tank will solve this annoyance. What you have is to be expected under the current conditions. My unprofessional opinion.
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  4. RioHyde

    RioHyde Plumber

    Sep 24, 2004
    Cincinnati, Ohio
    Install an expansion tank and I do believe that will take care of the problem.
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