This document specifies the: - field of application - the dimensional, the physico-chemical, the design, the hydraulic, the mechanical and the acoustic characteristics of non-controllable backflow preventer with different pressure zones - family C - type A and of nominal sizes DN 6 to DN 50, nominal pressure PN 10. It is applicable to: - Family C, type A, class ""a"" for general use: devices of class ""a"" shall be capable of working: at any pressure up to 1 Mpa (10 bar); with any pressure variation up to 1 Mpa (10 bar); at a supply temperature limit of 65 C degrees and 90 C degrees for 1 h; - Family C, type A, class ""b"" for specific use: device of class
DS/EN 14367:2005 history
2005DS/EN 14367:2005 Non controllable backflow preventer with different pressure zones - Familiy C, type A