Standards ČSN - Czech national standards - Page 6978

Devices to prevent pollution by backflow of potable water - Pipe interrupter with atmospheric vent and moving element DN 10 to DN 20 inclusive - Family D, type B

Standard published on 1.10.2005

Devices to prevent pollution by backflow of potable water - Controllable blackflow preventer with reduced pressure zone - Family B - Type A

Standard published on 1.10.2023

Devices to prevent pollution by backflow of potable water - Controllable blackflow preventer with reduced pressure zone - Family B - Type A

WITHDRAWN published on 1.8.2003

Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A

WITHDRAWN published on 1.8.2023

Devices to prevent pollution by backflow of potable water - Air gap with injector - Family A - Type D

WITHDRAWN published on 1.4.2004

Devices to prevent pollution by backflow of potable water - Air gap with injector - Family A - Type D

WITHDRAWN published on 1.8.2004

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

WITHDRAWN published on 1.7.2004

Devices to prevent pollution by backflow of potable water - Air gap with injector - Family A - Type D

Standard published on 1.1.2026

Devices to prevent pollution by backflow of potable water - Air gap with submerged feed incorporating air inlet plus overflow - Family A, type C

WITHDRAWN published on 1.7.2004

Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B

Standard published on 1.10.2023