Water Heater - No Water Output

[gudde1251]

2009 Cruiser 30SKP - Atwood GC10A-4E Water Heater.



Water flow (not temperature related) was working fine up till this past weekend. The wife and I happened to both be using hot water side of faucet in kitchen and bathroom when we suddenly both lost water flow. I have tracked it down to the back of the water heater. There is plenty of water supply going in to the tank. I got a picture of the threaded output fitting and there is some sort of white plastic disc/plunger that I could push back with a screwdriver, with no resistance. So what type of device/fitting is this? Atwood parts diagram that I have found does not show any type of fitting. I would think it would not be pressure relief, since it has that device on front. Temperature valve? I hooked it all up again and got same results. I think whatever valve it is has failed. Any guesses? or just replace with a straight fitting and be done with it.

[dagst1]

Its a "check valve" used to prevent antifreeze from entering the water heater when you winterize. Just unscrew it and replace it with a new one.

[dagst1]

Here is one from ETrailer.
https://www.etrailer.com/p-P23415LFVP.html

[Papa-T]

Love this forum. Great advice. Wish this was around 25 years ago.

[Lloyd]

Originally Posted by Papa-T

Love this forum. Great advice. Wish this was around 25 years ago.

X2
Great info Dan.

[Kamper Dave]

After several check valve failures we did away with the check valve by replacing it with a brass nipple and adding a valve. Here is a write up from a long time ago:

http://www.crossroadsowners.com/foru...ent-11807.html

[gudde1251]

Thank you to everyone for the replies and suggestions. This was my first check valve failure after having several campers over the last 10+ years.
I got the replacement valve already, but it has just been too hot and humid to talk myself into replacing it just yet. Hopefully I can get the old one out without resorting to pulling the tank out. Looks like an impact wrench might be in order. Kamper Dave, If/when this new valve fails, I will just put go with your plan. Thanks for the input.


Happy Camping!

[dagst1]

Do not know how you are fixed for tools but the correct deep socket and a breaker bar or a pipe on a ratchet will work. Just remember to use pipe tape on the new one. The older campers had 3 valves on the water heater to winterize then 2 then just 1 - 3 way valve so changing back to using valves will work just more to turn on and off. After having to remove the "guts" of a check valve to be able to use the hot water then replace the check valve later if it goes again i too will use more valves.