This document specifies:a) field of application; b) requirements for in line anti-vacuum valves; c) dimensional,The physico-chemical properties andThe properties of general hydraulic, mechanical and acoustic design of in-line anti-vacuum valves DN 8 to DN 80; d) test method and requirements for verifyingThese properties; e) marking and presentation; f) acoustics.This document specifies the characteristics of in-line anti-vacuum valves DN 8 to DN 80 that are suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 ℃ and for 1 h at 90 ℃.
EN 14451:2005 history
2005EN 14451:2005 Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN 8 to DN 80 - Family D, type A