DIN EN 14623:2005 Devices to prevent pollution by backflow of potable water - Air gaps with minimum circular overflow (verified by test or measurement) - Family A, type G; German version EN 14623:2005
2005DIN EN 14623:2005-08 Devices to prevent pollution by backflow of potable water - Air gaps with minimum circular overflow (verified by test or measurement) - Family A, type G; German version EN 14623:2005
2005DIN EN 14623:2005 Devices to prevent pollution by backflow of potable water - Air gaps with minimum circular overflow (verified by test or measurement) - Family A, type G; German version EN 14623:2005