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STN is a protected designation of Slovak national technical standards.
Covers for gate valves, globe valves and hydrants. Technical specification
Standard published on 1.4.1989
Selected format:Sanitary tapware - Pressure flushing valves and automatic closing urinal valves PN 10
Standard published on 1.12.2003
Selected format:Devices to prevent pollution by backflow of potable water - Hose Union anti-vacuum valves - DN 15 to DN 25 inclusive Family H, type B and type D - General technical specification
Standard published on 1.11.2020
Selected format:Devices to prevent pollution by backflow of potable water - Hose Union anti-vacuum valves - DN 15 to DN 25 inclusive Family H, type B and type D - General technical specification
WITHDRAWN published on 1.6.2008
Selected format:Devices to prevent pollution by backflow of potable water - Mechanical disconnector, direct actuated - Family G, type A
Standard published on 1.4.2022
Selected format: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WITHDRAWN published on 1.7.2006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WITHDRAWN published on 1.7.2006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:Latest update: 2026-06-14 (Number of items: 2 282 206)
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