Water heater check valve

**KevnVal** · 05-11-2023, 11:02 AM

We have a 2020 29RS with a Dometic 6 gal water heater. Does anyone know the part number for the water heater check valve? Mine is leaking, I see some discussion about replacing the plastic valve with a brass one. I think I stay with the plastic.
Thanks

**Second Chance** · 05-11-2023, 04:29 PM

Thread moved to Plumbing and Water Systems.

The WH check valves are quite generic. You can order them on Amazon or pick them up (plastic or brass - which I prefer) at most RV businesses. You just need to know the diameter, so take the old one with you (best bet) or measure the diameter.

Rob

**traveldawg** · 05-11-2023, 04:36 PM

Here is an example of one choice.....

**heeeeeeeresJohnny** · 05-15-2023, 03:54 AM

I had to replace our check valve on our last outing due to the plastic cracking. I was lucky and found the leak early before it filled the underbelly. The heating and cooling of the plastic causes it to become brittle and doomed to eventually fracture.
I would strongly suggest a brass replacement or it will re-occur. I would also change out the cold Inlet fitting as well while you are at it. It is a simple male to male pipe nipple also readily available.