1. The unobstructed vertical distance between the outlet of a faucet and the flood level rim of a receptacle.
Air gap
Interval
Air break
Developed Length
2. The physical separation between a waste pipe and an indirect waste receptor.
Air break
Developed Length
Air gap
Cross Connection
3. The unwanted flow of water or wastewater in reverse direction.
Backflow
Invert
Back pressure
Trap
VERIA
Construction Encyclopedia "The Lord makes firm the steps of the one who delights in him; though he may stumble, he will not fall, for the Lord upholds him with his hand."
Psalm 37:23-24 (NIV)