Devices to prevent pollution by backflow of potable water. Unrestricted air gap. Family A. Type A Ingestion-build-73935 A theory is presented to

A theory is presented to define additional performance parameters for confirmatory tests

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Who is ISO/IEC 26553 for

DD ENV 1998-1-2:1996

Who is BS EN 62199 - Bushings for D

Devices to prevent pollution by backflow of potable water. Unrestricted air gap. Family A. Type A Ingestion-build-73935 A theory is presented to1 Scope This European standard specifies the characteristics and the requirements of unrestricted air gaps Family A Type A intended for protection of potable water in water installations from pollution. This standard applies to air gaps in factory assembled products and to constructed air gaps in situ, and defines the physico chemical characteristics of materials of construction used for the purpose and application to ensure compliance with this