City Water Check Valve replacement

Tross2023
Tross2023 Member Posts: 77
in Heating/Plumbing & Winterizing

2018 T@B 320S
I see there is water pouring out from what appears to be the city water inlet valve. 
Amazon has a replacement:
3/4 NH Female to 1/2 NPT male 
IS THIS THE CORRECT REPLACEMENT SIZE?
TIA
2-3






2024 Hyundai Santa Cruz and 2018 T@B 320S

Comments

  • pthomas745
    pthomas745 Administrator, Moderator Posts: 4,593
    @Tross2023 that check valve/port has been problematic for several owners, as the fitting that screws into the port can work loose and just be a pain.  Look at this thread and BrianZ has a seminar of "All About the City Water Port." He also has a 2018 320.

    2017 Outback
    Towed by 2014 Touareg TDi
  • Tross2023
    Tross2023 Member Posts: 77
    Thanks, nice info.
    2024 Hyundai Santa Cruz and 2018 T@B 320S
  • Mickerly
    Mickerly Member Posts: 486
    We have a 2018 CS. The plastic fitting would hold pressure when on internal water. The fitting is made by Thetford. They have both plastic and Brass replacement parts. We chose brass. The screw holes are exactly the same.

    Looks like you have a loose hose. If that doesn't fix it, look for a crack in the plastic.
    2018 320CS-S
    "Just Enough"
  • BrianZ
    BrianZ Member Posts: 1,770
    edited August 2023
    @Tross2023, our loose city water connection also sprayed water on the front wall in the same area where I see drops in your photo.  If you can reach it by hand, you may be able to tighten it.  If not, the porthole I showed in the link posted above by @pthomas745 is an option that I use about every 6 months to make sure it's still tight.
    -Brian in Chester, Virginia
    TV: 2005 Toyota Sienna LE (3.3L V6)
    RV: 2018 T@B 320S, >100 mods 
  • Tross2023
    Tross2023 Member Posts: 77
    Porthole project…all parts ordered!
    2024 Hyundai Santa Cruz and 2018 T@B 320S
  • BrianZ
    BrianZ Member Posts: 1,770
    @Tross2023, I'm looking forward to hearing/seeing what happened with your city water check valve & if you got it fixed.
    -Brian in Chester, Virginia
    TV: 2005 Toyota Sienna LE (3.3L V6)
    RV: 2018 T@B 320S, >100 mods 

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