Check valve in hot water outlet nipple.....it is junk
Nipple screws into WH tank. Check valve is internal part of nipple
Either replace with a new check valve
OR better yet get rid of it completely
Install a shut off valve in hot outlet then check valve is not needed.
Check valve is used to stop any flow back into WH tank when winterizing
With a hot shut off valve you just close it (and cold inlet...then open bypass) when winterizing.
No more check valves.no more issues with no hot water due to a failed check valve
Atwood w/o hot outlet valve....just check valve
Atwood with hot outlet valve....no check valve
Go to Home Depot pick up 1/2" Sharkbite valve and install
Lowes has Gatorbites
ACE..probably Flairit
Any 1/2" snap in valve and just remove internals of nipple and reuse it
