This document specifies: - the field of application; - the requirements for pipe interrupters with atmospheric vent and moving element; - the dimensional and physico-chemical properties, and the properties of general hydraulic, mechanical and acoustic design to which pipe interrupters with elastic membrane of nominal size DN 10 up to and including DN 20; - the test procedure and requirements for verifying these properties; - the marking and the presentation; - the acoustics. This document specifies the characteristics of pipe interrupters with atmospheric vent and moving element of nominal size DN 10 up to and including DN 20 that are suitable for use in drinking water systems at pressures up to and including 1 000 kPa (10 bar) and temperatures up to and including 65 Celsius degrees and for 1 h at 90 Celsius degrees.