ASSE 1002-2020/ASME A112.1002-2020/CSA B125.12:20 covers minimum performance requirements for anti-siphon fill valves intended to be installed in water closet tanks.This is the second edition of ASSE 1002/ASME A112.1002/CSA B125.12, Anti-siphon fill valves for water closet tanks. It supersedes the previous edition published in 2015.