BSI 21/30441565 DC:2021 Edition

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BS EN 13077. Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B

Published By	Publication Date	Number of Pages
BSI	2021	21

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Categories: 13.060.20 - Drinking water, BSI

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Description

This document specifies the characteristics and the requirements of air gap with non-circular overflow (unrestricted) Family A, Type B for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution by backflow. This document applies to air gaps in factory-assembled products and to constructed air gaps in situ and defines requirements and methods to verify and ensure compliance with this document during normal working use.

The fluid in the receiving vessel is assumed to have similar properties to the water supply. Where this is not the case, additional care or tests could be required to verify the efficacy of the solution in practical use.

Additional information

Status	Definitive
Pages	21
Publication Date	2021-11-04
Standard Number	21/30441565 DC
Title	BS EN 13077. Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B
Identical National Standard Of	prEN 13077
Descriptors	Pollution, Pipes, Potable water, Fluid inlets, Pipework systems, In-situ construction, Pollution control, Water supply engineering, Anti-siphonage systems, Water, Overflows, Water pollution, Water supply (buildings), Valves, Prefabricated parts, Flow control
Publisher	BSI
Committee	B/504/-/14
ICS Codes	13.060.20 - Drinking water

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BSI 21/30441565 DC:2021 Edition

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