Devices to prevent pollution by backflow of potable water. Unrestricted air gap. Family A. Type A Ingestion-build-73935 Who is BS EN 62199

Who is BS EN 62199 - Bushings for D

DD ENV 1998-1-2:1996

Method by sieving and sedimentation

narrow series

intended to be connected to a telecommunication network

Devices to prevent pollution by backflow of potable water. Unrestricted air gap. Family A. Type A Ingestion-build-73935 Who is BS EN 621991 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