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Normas BSI – AENOR
BS EN 14451:2020

BS EN 14451:2020

Devices to prevent pollution by backflow of potable water. In-line anti-vacuum valves DN 10 to DN 50 inclusive. Family D, type A

2020-07-06 /Definitive
Equivalencias internacionales:

EN 14451

Relación con otras normas BSI:

Reemplaza a: BS EN 14451:2005


This document specifies the field of application, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical, and the acoustic characteristics of in-line anti vacuum valve family D Type A.

This document covers in-line anti vacuum valve family D Type A, intended to prevent pollution of potable water by backflow, caused by backsiphoning only.

It is applicable to in-line anti vacuum valve in denominations DN 10 up to DN 50.

It covers in-line anti vacuum valve of PN 10 that are capable of working without modification or adjustment:

  • at any pressure, up to 1 MPa (10 bar);

  • with any pressure variation, up to 1 MPa (10 bar);

  • in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C.

It specifies also the test methods and requirements for verifying their characteristics, the marking and the presentation at delivery.

Leak tests, Performance testing, Pollution, Flow control, Designations, Potable water, Anti-siphonage systems, Drainage, Valves, Sanitary appliances, Marking, Size, Vacuum techniques, Durability, Check valves, Endurance testing
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