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NEN-EN 13434

Devices to prevent pollution by backflow of potable water - Mechanical disconnector, flow actuated - Family G, Type B

active, Most Current
Organization: NEN
Publication Date: 1 January 2022
Status: active
Page Count: 32
ICS Code (Check valves): 23.060.50
scope:

This document specifies the dimensional, physical-chemical, design, hydraulic, mechanical and acoustic characteristics of mechanical disconnectors, flow actuated Family G, Type B.

This document is applicable to mechanical disconnectors flow actuated 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 disconnectors of PN 10 that are capable of working without modification or adjustment:

- at any pressure 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.

Document History

NEN-EN 13434
January 1, 2022
Devices to prevent pollution by backflow of potable water - Mechanical disconnector, flow actuated - Family G, Type B
This document specifies the dimensional, physical-chemical, design, hydraulic, mechanical and acoustic characteristics of mechanical disconnectors, flow actuated Family G, Type B. This document is...
May 1, 2020
Devices to prevent pollution by backflow of potable water - Mechanical disconnectors, hydraulic actuated - Family G, Type B
This document specifies, the dimensional, the physical-chemical, the design, the hydraulic, the mechanical and the acoustic characteristics of mechanical disconnectors flow actuated Family G, type B....
March 1, 2006
Devices to prevent pollution by backflow of potable water - Mechanical disconnectors, hydraulic actuated - Family G, Type B
This European Standard specifies, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical and the acoustic characteristics of mechanical disconnector, hydraulic actuated...
July 1, 2003
Devices to prevent pollution by backflow of potable water - Mechanical disconnectors hydraulic actuated - family G type B
This European Standard specifies, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical and the acoustic characteristics of mechanical disconnector, hydraulic actuated...
January 1, 1999
Disconnectors hydraulic actuated family G type B - Characteristics and tests
This European Standard specifies, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical and the acoustic characteristics of mechanical disconnector, hydraulic actuated...

References

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