City Water Check Valve replacement

Tross2023 · August 2023

Image: https://us.v-cdn.net/5021717/uploads/editor/a0/4jwmxqucoht0.jpg

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

pthomas745 · August 2023

@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.

https://tab-rv.vanillacommunity.com/discussion/8617/fresh-water-leak-fixed-again/p2

Tross2023 · August 2023

Thanks, nice info.

Mickerly · August 2023

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.

BrianZ · 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.

Tross2023 · August 2023

Porthole project…all parts ordered!

BrianZ · August 2023

@Tross2023, I'm looking forward to hearing/seeing what happened with your city water check valve & if you got it fixed.

City Water Check Valve replacement

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