No hot water

It's possible that you are just not seeing what you would expect when looking at the hot out of the water heater. You may be looking at a hollow tube going into the tank. That is because when the check valve comes apart the insides get pushed into the water line. Look into the hot line that attaches to the hot out of the water heater. The insides of the check valve will fit inside that line until it comes to an elbow or other restriction. At that point it becomes a plug. If you can't see the pieces you should be able to test my theory by having somebody turn on the water pump and seeing water come out of the water heater. If you have water there, you will need to find the insides of your check valve downstream. I was lucky. I have a 90 degree elbow about 3 inches from the water heater.

whjco wrote:
Every RV hot water that I've worked with has at least two or three valves depending on configuration. If it's a three-valve system and the bypass valve is in closed position with the other two valves also shut off, no water will flow. I'd check for two other valves on the inlet and discharge side of the hot water heater.

the 2 trailers I have owned have 1 valve and a check valve.

Key phrases
"We have THE hot water valve set to Normal"
"There is no check valve..."

IF you have a single valve bypass system there **MUST** Be a check valve and that valve is your problem.

If you have a TWO valve system the check is not necessary but you must turn the other valve

I have a 3 valve system, also no check valve but the all 3 valves need to be properly set for it to work.

But if you have a single valve. as your post implies THERE MUST be a check valve.

Is this rig new to you? Did you ever have hot water?Did Camping World or someone else possibly install a new heater? If so,check valve on inlet might be installed backward...no water getting in.Looks just like a pipe nipple like Roger says.

Are you sure no check valve on the output of the W/H. They look pretty much the same as a pipe nipple. They tend to come apart and plug the output.

I would disconnect the valve and verify that water actually gets to it and flows through it. Then maybe pull the drain plug on the water heater and see if water is getting that far. Just keep moving up or down the line until you find where the water stops flowing.

And yes, check that outside shower and make sure the valves aren't turned on with the head turned off.

Have you verified water even goes into water heater....Pop T&P Relief Valve open?

Have you disconnected Hot outlet line at fitting on back of water heater tank and verified water comes out?

Check valve on hot out is common if you do not have 3 shutoff valves....
1 for COld In, 1 for HOT Out, 1 for Bypass.
No Hot out shutoff valve..then nipple in hot out is check valve

What Brand/Model Water Heater?

There has got to be more valves you're not seeing?

Is the tank simply empty and needs to be filled before it exits a faucet?

Any chance the handle of the valve you took apart is installed 90 degrees wrong so "off" is actually "on"?

Just tossing out ideas. Pictures always help. My water heater bypass consists of 3 valves.

Do you have any warm water. Just wondering if maybe someone used the outside shower tap, and shut off the wand, but left both taps on. This will cause a blending of hot and cold, and very little hot water will get delivered. Just a shot in the dark.

Every RV hot water that I've worked with has at least two or three valves depending on configuration. If it's a three-valve system and the bypass valve is in closed position with the other two valves also shut off, no water will flow. I'd check for two other valves on the inlet and discharge side of the hot water heater.