Winterizing Bypass Valve?

[kilgore54]

Originally Posted by Brimare57

Does anyone know what size tubing will fit on the valve. My guess would 1/2" ID

I bought a piece of 1/2" ID clear plastic tubing. It was too big. I went back and bought a piece of 3/8" ID. It was really almost too small but I was able to stretch it just enough to force it over the fitting.

[rockfordroo]

Originally Posted by JArry

Do you mean backflow prevention valves?

My initial thought on Kilgore's question was that drainage of antifreeze onto the ground would not be a problem winterization-wise, because drainage due to gravity would take any water along with it, leaving the lines empty and thus not subject to freezing.

On the supply side, backflow prevention = check valve.

On the grey water/black water side, backflow prevention sometimes means a vacuum breaker valve (such as in your black tank flush line).

[Luv70sFords]

get a chunk of 3/8 vinyl tubing. put the end you plan on attaching to the valve in a mug of hot water for a minute to loosen it up. It'll pop right on.

I did mine last week, took all of 20 min from start to stop.

[Brimare57]

Well, its confirmed. i just finished winterizing my A213HW. it was a breeze - took less than 15 minutes.
Regarding the bypass valve, it worked perfectly. I purchased some 1/2OD x 3/8ID tubing from Home Depot and put it directly into the bottle of RV fluid. I didn't even use the whole gallon. On the A213HW, that takes care of the lines to the cassette toilet, interior sink, outside shower, and the city water line.