Devices to prevent pollution by backlow of potable water - hose union backflow preventer dn 15 to dn 32 - family h , type a 防饮用水回流污染的装置.软管接头防回流装置dn 15至dn 32 . a型h系列
Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow 水装置中饮用水防污以及防止回流污染的装置的一般要求
Devices to prevent pollution by backflow of potable water - controllable backflow preventer with reduced pressure zone - family b . type a 防饮用水回流污染设备.带减压区的可控制回流防止器. b系列a型
Devices to prevent pollution by backflow of potable water - controllable backflow preventer with reduced pressure zone - family b - type a 防饮用水回流污染设备.带减压区的可控制回流防止器. b系列a型
Devices to prevent pollution by backlow of potable water - pressurized air inlet valves dn 15 to dn 50 - family l , type a and type b 防饮用水回流污染的装置.压缩空气进气阀dn15至dn 50 . a型和b型l系列
Devices to prevent pollution by backflow of potable water - in - line anti - vacuum valves dn 8 to dn 80 - family d , type a ; german version en 14451 : 2005 防饮用水回流污染的装置.直通反回流阀dn 8至dn 80 . a
Devices to prevent pollution by backflow of potable water - air gap with circular overflow restricted - family a , type f ; german version en 14622 : 2005 防饮用水回流污染的装置.带圆形溢流口的气隙. f型a系
. g a devices to prevent pollution by backflow of potable water - air gaps with minimum circular overflow verified by test or measurement - family a , type g 防饮用水回流污染的装置.带最小圆形溢流口的气隙
Devices to prevent pollution by backflow of potable water - hose union backflow preventer dn 15 to dn 32 - family h ; type a ; german version en 14454 : 2005 防饮用水回流污染的装置.软管接头防回流装置dn 15至d
Dn 10 - dn 20 . c d devices to prevent pollution by backflow of potable water - pipe interrupter with permanent atmospheric vent dn 10 to dn 20 - family d , type c 防止饮用水回流污染的装置.带恒定大气压力孔的管阻流器
