DIN EN 16678:2024-02

This standard specifies the safety, design, construction, and performance requirements and testing for automatic shut-off valves for burners and appliances burning one or more gaseous fuels, hereafter referred to as "valves". This document is applicable to valves with declared maximum inlet pressures of more than 500 kPa and up to and including 6 300 kPa and of nominal connection sizes up to and including DN 250. This document is applicable to: - electrically operated valves and to valves actuated by fluids including the pilot valves for these fluids if actuated electrically and including release valves, but not to any external electrical devices for switching the actuating energy; - automatic shut-off valves where the flow rate is controlled by external electrical signals proportional to the applied signal. It is not applicable to valves specifically designed for use in transmission and distribution networks. This document (EN 16678:2022) has been prepared by Technical Committee CEN/TC 58 "Safety and control devices for burners and appliances burning gaseous and/or liquid fuels", the secretariat of which is held by BSI (United Kingdom). The responsible German standardization committee is Joint Working Committee NA 041-03-10 GA "Gemeinschaftsarbeitsausschuss NHRS/NAA/NAGas: Sicherheits- und Regeleinrichtungen für wärmeerzeugende Geräte und Anlagen sowie für die Gasversorgung (SpA CEN/TC 58, WG 11, WG 13, WG 15 und ISO/TC 161, WG 3, WG 4, WG 5)" ("Joint working committee NHRS/NAA/NAGas: Safety and control devices for heating appliances and heat generating systems and for the gas distribution (SpA CEN/TC 58, WG 11, WG 13, WG 15 and ISO/TC 161, WG 3, WG 4, WG 5)") at DIN Standards Committee Heating and Ventilation Technology and their Safety (NHRS).