EN 14455:2005 – Devices to prevent pollution by backflow of potable water – Pressurised air inlet valves DN 1 5 to DN 50 – Family L, type A and type B

EN 14455:2005 - Devices to prevent pollution by backflow of potable water - Pressurised air inlet valves DN 1 5 to DN 50 - Family L, type A and type B

1 Scope
This document specifies:
a) field of application;
b) requirements for pressurised air inlet valves;
c) dimensional and the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of pressurised air inlet valves DN 15 to DN 50;
d) test procedure and requirements for verifying these properties;
e) marking and presentation;
f) acoustics.
This document specifies the characteristics of pressurised air inlet valves DN 15 to DN 50 that are suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 °C and for 1 h at 90 °C.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 806-1:2000, Specifications for installations inside buildings conveying water for human consumption — Part 1: General
EN 1717:2000, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow
EN 13959, Anti-pollution check valves — DN 6 to DN 250 inclusive family E, type A, B, C and D EN°ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions,tolerances and designation (ISO 228-1:2000)
EN ISO 3822-1, Acoustics — Laboratory tests on noise emission from appliances and equipment used in water supply installations — Part 1: Method of measurement (ISO 3822-1:1999)
EN ISO 3822-3, Acoustics — Laboratory tests on noise emission from appliances and equipment used in water supply installations — Part 3: Mounting and operating conditions for in-line valves and appliances (ISO 3822-3:1997)
EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full – Part 1: General principles and requirements (ISO 5167-1:2003)
EN ISO 6509, Corrosion of metals and alloys — Determination of dezincification resistance of brass (ISO 6509:1981)
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Designation, dimensions and tolerances
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
EN 14455:2005 – Devices to prevent pollution by backflow of potable water – Pressurised air inlet valves DN 1 5 to DN 50 – Family L, type A and type B

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