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  • BSI
    20/30409068 DC BS EN 13433. Devices to prevent pollution by backflow of potable water. Mechanical disconnector, direct actuated. Family G, type A
    Edition: 2020
    $44.66
    / user per year

Description of 20/30409068 DC 2020

This document specifies the dimensional, physical-chemical, design, hydraulic, mechanical and acoustic characteristics of mechanical disconnectors, direct actuated Family G, type A.

This document is applicable to mechanical disconnectors in nominal sizes DN 8 up to DN 250, intended to prevent the return of water having lost its original sanitary and drinking qualities (called “polluted water” in this document), into the potable water distribution system whenever the pressure of the latter is temporarily lower than in the polluted circuit.

This document covers the mechanical disconnector of PN 10 that are capable of working without modification or adjustment:

  • at any pressure up to 1,0 MPa (10 bar);

  • with any pressure variation up to 1,0 MPa (10 bar);

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

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



Standard Number20/30409068 DC
TitleBS EN 13433. Devices to prevent pollution by backflow of potable water. Mechanical disconnector, direct actuated. Family G, type A
StatusDefinitive
Publication Date2020-04-30
Identical National Standard OfprEN 13433
DescriptorsPressure, Temperature, Performance, Relief valves, Anti-siphonage systems, Marking, Designations, Water pollution, Potable water, Water supply, Water supply and waste systems (building, Flow control, Check valves, Verification, Performance testing, Dimensions
ICS13.060.20 Drinking water, 23.060.50 Check valves
CommitteeB/504
PublisherBSI
Pages29

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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