BS-EN-14454 › Devices to prevent pollution by backflow of potable water. Hose union backflow preventer DN 15 to DN 32 inclusive. Family H, type A
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Endurance testing, Anti-siphonage systems, Water pollution, Marking, Performance testing, Potable water, Flexible pipes, Designations, Flow control, Water supply and waste systems (building, Leak tests, Pollution, Valves, Check valves, Size, Water supply
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BS EN 14454:2005
Oct. 31, 2006