Standards ČSN - Czech national standards - Page 6993

Devices to prevent pollution by backflow of potable water - Hose union backflow preventer DN 15 to DN 32 inclusive - Family H, type A

Standard published on 1.10.2005

Devices to prevent pollution by backflow of potable water - Pressurised air inlet valves DN 15 to DN 50 inclusive - Family L, type A and type B

Standard published on 1.10.2005

Devices to prevent pollution by backflow of potable water - Air gap with circular overflow (restricted) - Family A, type F

Standard published on 1.1.2006

Devices to prevent pollution by backflow of potable water - Air gap with minimum circular overflow (verified by test or measurement) - Family A, type G

Standard published on 1.1.2006

Non controllable backflow preventer with different pressure zones - Family C, type A

Standard published on 1.2.2006

Devices to prevent pollution by backflow of potable water - Mechanical disconnector, direct actuated - Family G, Type A

Standard published on 1.10.2022

Devices to prevent pollution by backflow of potable water - Mechanical disconnector, direct actuated - Family G, type A

WITHDRAWN published on 1.6.2022

Devices to prevent pollution by backflow of potable water - Mechanical disconnector direct actuated - Family G, Type A

WITHDRAWN published on 1.9.2006

Devices to prevent pollution by backflow of potable water - Mechanical disconnector hydraulic actuated - Family G, Type B

Standard published on 1.10.2022

Devices to prevent pollution by backflow of potable water - Mechanical disconnector hydraulic actuated - Family G, Type B

WITHDRAWN published on 1.10.2006