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STN is a protected designation of Slovak national technical standards.
Devices to prevent pollution by backflow of potable water - Mechanical disconnector, direct actuated - Family G, type A
WITHDRAWN published on 1.7.2006
Selected format:Devices to prevent pollution by backflow of potable water - Mechanical disconnector, flow actuated - Family G, Type B
Standard published on 1.4.2022
Selected format:Devices to prevent pollution by backflow of potable water - Mechanical disconnector, hydraulic actuated - Family G, type B
WITHDRAWN published on 1.7.2006
Selected format:Devices to prevent pollution by backflow of potable water - Unrestricted air gap-Family A - Type A
Standard published on 1.12.2003
Selected format:Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A
Standard published on 1.6.2023
Selected format:Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A
WITHDRAWN published on 1.8.2003
Selected format:Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B
Standard published on 1.6.2023
Selected format:Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B
WITHDRAWN published on 1.11.2008
Selected format:Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, type B
WITHDRAWN published on 1.6.2004
Selected format:Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B
WITHDRAWN published on 1.9.2018
Selected format:Latest update: 2026-08-19 (Number of items: 2 298 207)
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