Pressure Relief Valve

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by terrell44, Apr 14, 2005.

  1. terrell44

    terrell44 New Member

    Messages:
    1
    Replaced pressure relief valve on 40g gas water heater about a year ago because of leackage from relief valve pipe. This did resolve the problem, but after only 1 year the problem is back. Any suggestions??
  2. breplum

    breplum Member

    Messages:
    62
    Location:
    San Francisco Bay Area
    Did you check house pressure. If it is high, that can be the cause. Next, is there a check vavle or pressure reducing valve without bypass? We find that even with bypass, there can be high pressure developing...so an expansion tank, properly installed and charged usually solves the problem.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,315
    Location:
    Cave Creek, Arizona
    valve

    More of the valves fail by not opening rather than leaking spontaneously. So you were probably just lucky that replacing it fixed the leaking, but you probably did not solve why it leaked. Either the heater temperature is too high, in which case you would usually get a flood rather than a drip, or the pressure is getting too high.
Similar Threads: Pressure Relief
Forum Title Date
Plumbing Forum, Professional & DIY Advice, Tips & Differences between pressure-only relief valves? Apr 16, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Pressure relief valve failed. Apr 28, 2013
Plumbing Forum, Professional & DIY Advice, Tips & Help with plumbing. Pressure relief valve needed? Apr 12, 2013
Plumbing Forum, Professional & DIY Advice, Tips & Pressure relief valve to reduce pipe bursting? Mar 20, 2013
Plumbing Forum, Professional & DIY Advice, Tips & Problem with whole house pressure relief valve? Need advice from a pro. :) Jan 11, 2012

Share This Page