双止回阀倒流防止器
Double check valve backflow prevention assembly

2010-01-14

Backflow Preventers (Reduced Pressure Principle and Double Check Valve Types)
防回流阀（减压原理和双止回阀类型）

1987-02-01

Backflow Preventers (Reduced Pressure Principle and Double Check Valve Types)
防回流阀（减压原理和双止回阀类型）

1987-02-01

Devices to prevent by backflow of potable water. In-line anti-vacuum valves DN 8 to DN 8. Family D, type A.
防止饮用水回流的装置 直列式防真空阀DN 8至DN 8 D家族 A型

2006-02-08

Devices to prevent pollution by backflow of potable water. In-line anti-vacuum valves DN 10 to DN 50 inclusive. Family D, type A
防止饮用水回流污染的装置 直列式防真空阀DN 10至DN 50 包括在内 D家族 A型

2020-07-06

Devices to prevent pollution by backflow of potable water - Pressurised air inlet valves DN 15 to DN 50 - Family L, type A and type B
防止饮用水回流污染的装置.加压进气阀DN 15至DN 50.系列A型和B型；德文版EN 14455:2005

2005-08-01

Devices to prevent pollution by backflow of potable water. Pressurised air inlet valves DN 15 to DN 50. Family L, type A and type B
防止饮用水回流污染的装置 压力进气阀DN 15至DN 50 L族 A型和B型

2006-10-31

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
防止饮用水回流污染的装置 软管接头防真空阀 DN 15至DN 25 包括H系列、B型和D型 通用技术规范

2020-07-06

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
防止饮用水回流污染的装置.软管接头防真空阀.DN 15至DN 25 包括H系列B型和D型.一般技术规范

2009-09-16