This standard provides dimensional and minimum performance requirements for anti-siphon fill
valves (ballcocks) for gravity water closet flush tanks including protection of the potable water
supply against back siphonage of water from the flush tank.
ASSE 1018-2001 history
1970ASSE 1018-2023 Performance Requirements for Trap Seal Primer Valves - Potable Water Supplied
2001ASSE 1018-2001 Performance Requirements for Trap Seal Primer Valves - Potable Water Supplied