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Homepage>BS Standards>13 ENVIRONMENT. HEALTH PROTECTION. SAFETY>13.060 Water quality>13.060.20 Drinking water>20/30409068 DC BS EN 13433. Devices to prevent pollution by backflow of potable water. Mechanical disconnector, direct actuated. Family G, type A
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immediate downloadReleased: 2020-04-30

20/30409068 DC

BS EN 13433. Devices to prevent pollution by backflow of potable water. Mechanical disconnector, direct actuated. Family G, type A

CURRENCY
LANGUAGE
English
Standard number:20/30409068 DC
Pages:29
Released:2020-04-30
Status:Draft for Comment
DESCRIPTION
This standard 20/30409068 DC BS EN 13433. Devices to prevent pollution by backflow of potable water. Mechanical disconnector, direct actuated. Family G, type A is classified in these ICS categories:
  • 13.060.20 Drinking water
  • 23.060.50 Check valves

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.


This product includes: