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NOTE This Technical Report does not address Type C standards
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Facilities management professionals
provided that the general guidelines of Annex D concerning allowable workstation differences are followed
Devices to prevent pollution by backflow of potable water. Controllable backflow preventer with reduced pressure zone. Family B. Type A Ingestion-build-64721 NOTE This Technical Report does1 Scope This European Standard specifies the field of application, the dimensional, the physico chemical, the design, the hydraulic, the mechanical, and the acoustic characteristics of controllable backflow preventer with reduced pressure zone Family B Type A. This standard covers controllable backflow preventers of Family B Type A, with reduced pressure zones, intended to prevent backflow by backsiphoning or backpressure of water into the potable
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