Forum Discussion

dryfly's avatar
dryfly
Explorer
Nov 08, 2019

winterizing black tank flush with air

I've always been successful winterizing by just blowing air through my water lines. I know there is an anti-siphon valve in the black tank flush system. Will just blowing out this line clear water from it?
  • dryfly wrote:
    I've always been successful winterizing by just blowing air through my water lines. I know there is an anti-siphon valve in the black tank flush system. Will just blowing out this line clear water from it?


    Thats one that I have never messed with winterizing. Its apparently draining out on mine , or have been lucky. 12 years of winterizing on my fifth wheel, and haven't had an issue with it
  • Me too, I've never blown out my black tank flush in over 12 yrs. I do hope it just drains into the tank when driving down the road. Knock on wood, I've never had a problem either.