Quote:
Originally Posted by scottz
I also don't fully understand the purpose or need for this anti siphon device unless just to satisfy a code. I don't see how liquid in the un-pressurized black tank could ever make it's way into the pressurized water hose.
And why an anti-siphon device with an air vent inside the trailer instead of a simple check valve?
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You need to have an anti-siphon to break the static water path for the bacteria. The black water may not travel back through but static, non moving water provides a virtual freeway for bacteria.
Mark
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