scope:

Applies to flushing valves for WCs and valves for urinals, with automatic hydraulic closure, intended for: - WC pans EN 997; - single flush urinals prEN 13407; - siphon action urinals prEN 13407. It is intended to specify: - marking and identification, physico-chemical, dimensional, leaktightness, pressure behaviour, hydraulic, mechanical endurance and acoustic characteristics of flushing valves for WCs and urinals with automatic closure; - test methods used to verify these characteristics; - and to determine requirenments for the atmospheric interrupter which shall be an integral part of the WC flushing valve.