My water heater has 3 valves on it. One on the red line at top = it's openOne in the middle = bypass valve closedOne on the blue line at bottom = closedShould the bottom blue line valve be open for normal RV usage?I'm just wondering, I am winterizing, drained water heater, shut off red line, opened bypass, blue already closed, will leave it that way. Is this correct?Thx!

If the blue line valve was closed you would not have gotten any hot water at the faucet, so it must have been in the open position.Normal RV operation:Red line valve openBypass valve closedBlue line valve openBypassed:Red line valve closedBypass valve openBlue line valve closed

Boon Docker wrote:If the blue line valve was closed you would not have gotten any hot water at the faucet, so it must have been in the open position.Normal RV operation:Red line valve openBypass valve closedBlue line valve openBypassed:Red line valve closedBypass valve openBlue line valve closedHmm, well unless the valve is somehow backwards it was in the sideway position (closed) and not in line with the line (open).

If this is the type of setup you have with the blue line valve closed and still get hot water then that valve is defective.

1/4 turn valves....valve handle indicates if valve open or closedTraditional valve that you turn handle until fully open or closed....valve handle could end up any position

Thanks for the pictures, that is exactly what I have. Must be the valve then. Water heater works fine! Thanks!

Water heater questions.... | Good Sam Community

GrandpaKip
Explorer II
Oct 09, 2019
Instead of messing with the pressure relief valve, why not just open a faucet on the hot side? It’ll do the same thing.
Something definitely screwy with the valve.
campermama
Explorer II
Oct 09, 2019
GrandpaKip wrote:
Instead of messing with the pressure relief valve, why not just open a faucet on the hot side? It’ll do the same thing.
Something definitely screwy with the valve.

I did open faucets first, but when I released the pressure valve water still came out.
campermama
Explorer II
Oct 09, 2019
opnspaces wrote:
Did you check if your valves were only 1/4 turn valves? Or are they the ones that turn a few revolutions? If they are the screw type and you never touched the cold valve then it's still open and needs to be closed.

They are 1/4 turn valves. I did the winterize, closed hot water valve, opened bypass valve, never touched cold water valve (already in closed position). All went well.
I will check the cold water valve when I dewinterize and use the RV in a few months.

Temps here dropping to 18 tonight :E
Old-Biscuit
Explorer III
Oct 09, 2019
campermama wrote:
GrandpaKip wrote:
Instead of messing with the pressure relief valve, why not just open a faucet on the hot side? It’ll do the same thing.
Something definitely screwy with the valve.

I did open faucets first, but when I released the pressure valve water still came out.

That is due to 'loss of air pocket'

Water level should be just at the tank opening where T&P Relief Vlave screws in......temp probe goes down into the water

Air pocket is above T&P opening to top of tank.
Air can be compressed and control pressure increases when heating water.
Water SWELLS when heated so w/o air pocket pressure would increase

Forum Discussion

Water heater questions....

About Travel Trailer Group

Related Content

water heater question

Question about propane water heater?

Rockwood water heater question

Suburban water heater question

water heaters