Keystone RV Forums - View Single Post - 22RBS Black Tank Back Flow/Anti Siphon Location

Auggie Waterman · 05-09-2018, 07:28 AM

I must not be understanding anything here even after re-reading... OK, there's two black flush connections on the passenger side of our fifth wheel (Hideout 308bhds) toward the front. One for each black tank, has 1.5 bathrooms.

I thought a black flush would connnect to a spray nozzle of some sort inside the black tank connected to the toilet, simple. Why would there be a "anti siphon" or backflow preventer or any connection to the other clean water supplies or lines in the trailer??!

05-09-2018, 07:28 AM	#17
Auggie Waterman Member Join Date: May 2018 Location: Saint Augustine Posts: 34	I must not be understanding anything here even after re-reading... OK, there's two black flush connections on the passenger side of our fifth wheel (Hideout 308bhds) toward the front. One for each black tank, has 1.5 bathrooms. I thought a black flush would connnect to a spray nozzle of some sort inside the black tank connected to the toilet, simple. Why would there be a "anti siphon" or backflow preventer or any connection to the other clean water supplies or lines in the trailer??!