Leaking fitting to faucet

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Stuart Richman, Oct 10, 2021.

  1. Stuart Richman

    Stuart Richman Member

    Joined:
    Aug 2, 2020
    Location:
    Maryland
    Hi,

    I am replacing a faucet in a RV. I can't get it too stop leaking.

    The first picture with the male brass fitting is in the RV and at the joint that's leaking.

    The second picture shows two fittings. The one on the left with the hose that was orignally there. The brass fitting on the right is the one that came with the faucet that interfaces with the faucet hoses.

    It is leaking when I connect the two brass fittings. I did not use teflon tape, but used T plus 2 sealant.

    Any suggestions?

    Thank you
     

    Attached Files:

  2. John Gayewski

    John Gayewski In the Trades

    Joined:
    Aug 7, 2021
    Location:
    Iowa
    That fitting seals by the threads pressing onto the black washer. If you over tighten it you'll ruin the black washer. I think you need another black washer. You could try pulling the washer or and resetting it.
     
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  4. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    If that's a 1/2" male fitting that's on the PEX, you might want to use a 1/2 FIP x 3/8 comp straight stop.

    dahl-511-52-31.jpg
     
  5. Stuart Richman

    Stuart Richman Member

    Joined:
    Aug 2, 2020
    Location:
    Maryland
    Thank you..I'll try that. There is a good chance I did over tighten.
     
  6. Tuttles Revenge

    Tuttles Revenge In the Trades

    Joined:
    Oct 15, 2014
    Both above suggestions are correct. But if those are 1/2" tapered threads, you're better off buying a fitting like Terry suggests that seals without the need of a washer.
     
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  7. Stuart Richman

    Stuart Richman Member

    Joined:
    Aug 2, 2020
    Location:
    Maryland
    Hi,

    The washer needs replacing. The size is; OD: 3/4 " ID: 7/16"; thickness 1/16". Having trouble finding it. Any suggestions?

    Thank you
     
  8. John Gayewski

    John Gayewski In the Trades

    Joined:
    Aug 7, 2021
    Location:
    Iowa
    A shower head probably has one that's pretty close, or you'd need to buy another fitting that has one in it. Otherwise just get what Terry posted is the same thing, but didn't need a washer. You should use tape and dope though, if you go that route.
     
  9. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    StyleCode: E60BK-0.750-0.437-.063
    OD: 0.750, ID: 0.437, Thickness:.063

    from http://www.metrogasket.com/standard-products/rubber-washer/
    Buna-N Standard Rubber Washer Price List

    Other materials available.
    Other stores sell too. That was just the first one I checked.
     
  10. Stuart Richman

    Stuart Richman Member

    Joined:
    Aug 2, 2020
    Location:
    Maryland
    It would not thread into the fitting Terry suggested.
     
  11. Stuart Richman

    Stuart Richman Member

    Joined:
    Aug 2, 2020
    Location:
    Maryland
    Hi,

    This might be an obvious question to some...but what is the best technique to make sure the connection is tight to prevent leaks, but not to tight to deform the washer/gasket .

    Do you snug the connection, turn water on and see if it leaks..then continue to snug until no leaks occur?

    Thank you
     
  12. John Gayewski

    John Gayewski In the Trades

    Joined:
    Aug 7, 2021
    Location:
    Iowa
    Finger tight. Then a quarter or half turn.
     
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