winterizing issue

Ive been filling up the empty antifreeze jugs with water and running it through like I would if I was winterizing. Its strange. The only time water stops flowing at all (pump stops running)is if ALL the valves are in the closed position. With the bypass closed, like it is during the the summer, water should still be flowing in and out of the heater.

First: You are winterizing wrong pumping all that noxious chemical into the lines, Blow 'em out with compressed air,, Like 10 times with a few minutes between blows.. Then if the air in the lines freezes.. Well if that happens the RV will be the least of your problems (Breathing being problem # only)

Now: Best guesses as to the answer to your qustion.

1: I have never heard of a quarter turn valve that is directional, but.. Possible it is

2: Defective valve.

3: I have heard of handles being installed wrong.

4: And valves not turned fully to stop.

DE88ROX wrote:
This is my 3rd winter with the trailer so I've done it before and had no issues. The white Pex valves in the pic were new last spring. Installed at the dealer because the cheap plastic/brass ones broke.

To me, this says either a defective valve or valve is installed wrong...

I went out and looked. The bottom valve directional arrow is pointing towards the water heater and the top is pointing away. From the diagrams i have seen that is correct.

the valve handle is on wrong

Dutch_12078 wrote:
I suspect one or both of the valves are installed backwards. Those Flair-It PEX valves are directional. The white valves should have the flow arrow pointing towards the heater for the bypass to work properly. Note that the hot water outlet valve will NOT turn off the hot water in this configuration with this type of valve.

Notice the arrow on the valve body:

Ill go out and take a closer look

Harvard wrote:
Your hot water lines/taps will flow antifreeze via the bypass line/valve. It is not coming from the tank, is it?

Im getting some anti-freeze through to the faucets, but the majority of it is flowing right into the water heater.

Ive gone through 4 gallons already and I haven't even hit all the faucets.

I suspect one or both of the valves are installed backwards. Those Flair-It PEX valves are directional. The white valves should have the flow arrow pointing towards the heater for the bypass to work properly. Note that the hot water outlet valve will NOT turn off the hot water in this configuration with this type of valve.

Notice the arrow on the valve body:

Your hot water lines/taps will flow antifreeze via the bypass line/valve. It is not coming from the tank, is it?

Turn the cold one the other way or will it turn further? The handle may have been installed wrong by the dealer. IT IS A VERY LONG SHOT as I presume the water worked fine all summer