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