1. The physical separation between a waste pipe and an indirect waste receptor.
Air gap
Trap
Cross Connection
Air break
2. The unobstructed vertical distance between the outlet of a faucet and the flood level rim of a receptacle.
Air break
Developed Length
Air gap
Interval
3. The unwanted flow of water or wastewater in reverse direction.
Backflow
Back pressure
Trap
Back siphonage
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)
