Leaking PRV

Discussion in 'General Plumbing Help' started by havasu, Jul 14, 2014.

  1. Jul 14, 2014 #1

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    8,878
    Likes Received:
    1,157
    Location:
    Southern California,
    I need some help please. My PRV is leaking about one drop of water every 30 seconds. Yeah, I know it needs to be replaced, but so does the gate valve below it, and the entire configuration. Since I'm going down for surgery again next week, is there a stop gap measure I can do to stop the drip? Can the adjustment bolt be tightened to stop the drip, since it appears to be originating there?

    7-13-14a.jpg

    7-13-14.jpg
     
  2. Jul 14, 2014 #2

    Matt30

    Matt30

    Matt30

    Professional Professional

    Joined:
    Jan 17, 2012
    Messages:
    1,908
    Likes Received:
    748
    Location:
    Halifax, Nova Scotia
    Can you back off the stem....wrap it in teflon tape and re set it?
     
  3. Jul 14, 2014 #3

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    8,878
    Likes Received:
    1,157
    Location:
    Southern California,
    I suppose I could try. I normally just replace them, but in a crunch for time.
     
  4. Jul 14, 2014 #4

    Matt30

    Matt30

    Matt30

    Professional Professional

    Joined:
    Jan 17, 2012
    Messages:
    1,908
    Likes Received:
    748
    Location:
    Halifax, Nova Scotia
    Thats why i suggested it :D
     
  5. Jul 15, 2014 #5

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    8,878
    Likes Received:
    1,157
    Location:
    Southern California,
    Hopefully, I will have time Thursday or Friday. Thanks for the tip.
     
  6. Jul 15, 2014 #6

    Matt30

    Matt30

    Matt30

    Professional Professional

    Joined:
    Jan 17, 2012
    Messages:
    1,908
    Likes Received:
    748
    Location:
    Halifax, Nova Scotia
    Use the thicker thread sealing tape as opposed to the thin white stuff. Mine is pink.
     
  7. Jul 15, 2014 #7

    johnjh2o

    johnjh2o

    johnjh2o

    Senior Member Professional

    Joined:
    Jul 21, 2011
    Messages:
    3,197
    Likes Received:
    733
    Location:
    Melbourne, Florida
    For a temporary repair a O ring backed up with a washer would work better then T-tape.
     
    journeyman likes this.
  8. Jul 17, 2014 #8

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    8,878
    Likes Received:
    1,157
    Location:
    Southern California,
    The PRV was shot, so I replaced it. I had also purchased the parts to replace the main gate valve with a ball valve but the street shut off ball valve was frozen. Had I torqued on it anymore, I would have busted it. I called the city and asked them to fix it, since it is on their side of the meter.
     
  9. Jul 18, 2014 #9

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    8,878
    Likes Received:
    1,157
    Location:
    Southern California,
    A question for the experts. I never checked the pressure with the old PRV, but after installing the new one, the pressure was noticeably lower. Since I couldn't find the pressure gauge, I screwed in the PRV adjustment screw a few turns, until the pressure seemed similar to the old PRV. I then found the pressure gauge (figures, right?) and see the pressure is set to about 71 PSI. Isn't this at about the high end of normal? Should I back it down a bit?
     
  10. Jul 18, 2014 #10

    phishfood

    phishfood

    phishfood

    Well-Known Member Supporting Member

    Joined:
    Jan 18, 2010
    Messages:
    5,683
    Likes Received:
    965
    Location:
    Orlando, FL
    71 PSI is toward the high end of acceptable. Code here requires a PRV anytime the pressure exceeds 80. You will experience faster wear on faucets, fixtures, and piping.

    Me? I like a 65-70 PSI shower, and am capable of fixing whatever breaks.
     
  11. Jul 18, 2014 #11

    Matt30

    Matt30

    Matt30

    Professional Professional

    Joined:
    Jan 17, 2012
    Messages:
    1,908
    Likes Received:
    748
    Location:
    Halifax, Nova Scotia
    Are you saying put the 0-ring under the lock washer?
     
  12. Jul 18, 2014 #12

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    8,878
    Likes Received:
    1,157
    Location:
    Southern California,
    I considered both the Teflon tape as well as a rubber coated washer to temporarily stop the leak, but discovered the water was dripping through a 1/8" hole on the face of the valve, which I presume was placed there as a way to warn homeowners that the PRV was failing. After backing out the adjustment screw, then re-installing it, the one drop a minute changed to one drop every two seconds. This was when I decided to find time to properly repair it.

    Thanks for the comments. Phish, I'll reset the pressure a bit lower today.
     

Share This Page