Winterize fresh water gravity fill tube?
My Keystone Challenger has a fill tube that does not drain when finished filling.. it has a low point as it comes in high, then drops along frame and goes into tank top. My question is this, does thi...
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Dayle1 wrote:skipnchar wrote:
Even when just left alone, as long as it is not constricted anywhere so any ice that forms has plenty of room to expand, no damage would be done to the fill tube. A shot of RV antifreeze is just fine if it makes you feel better but probably not necessary.
X2
While I generally do agree with this, there can sometimes be problems with this method. You see..water freezes from the outside in. So the ends of the settled water section can freeze. Then as the inner portion of the water freezes the ends cannot push out or up the hose. That makes the expansion area (as it freezes) grow in the middle of the water low point. If it "bubbles" out enough, it "could" split the line in that area. This has not happened to me in any RV with PEX tubing. But it has happened to me in garden hoses that have frozen in small low point areas.
