现行

FM Approvals 1221

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

现行

FM Approvals 1221

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

现行

UNE-EN 12729-2003

Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A
防止饮用水回流污染的装置.带减压区的可控回流防止器.B族.A类

2003-06-20

现行

AWWA DSS90003

Types of Backflow Prevention Assemblies and Their Installation
防回流组件的类型及其安装

1990-01-01

现行

DIN EN 14367

Non controllable backflow preventer with different pressure zones - Family C, type A
不同压力区的不可控防回流阀——C系列 A型；德文版EN 14367:2005

2005-10-01

现行

BS EN 14367-2005

Non controllable backflow preventer with different pressure zones. Family C, type A
不同压力区的不可控防回流阀 C族 A型

2006-10-31

现行

UNE-EN 14367-2006

Non controllable backflow preventer with different pressure zones - Family C, type A.
带不同压力区的不可控防回流阀-C系列 A型

2006-04-12

现行

DIN EN 14454

Devices to prevent pollution by backflow of potable water - Hose union backflow preventer DN 15 to DN 32 - Family H; type A
防止饮用水回流污染的装置——软管接头防回流阀DN 15至DN 32——H系列；A型；德文版EN 14454:2005

2005-08-01

现行

UNE-EN 14454-2005

Devices to prevent pollution by backflow of potable water - Hose union backflow preventer DN 15 to DN 32 - Family H, type A
防止饮用水回流污染的装置.软管接头防回流阀DN 15至DN 32.H系列A型

2005-12-14

现行

DIN 3505

Controllable backflow preventer with reduced pressure zone - Family B type A according to DIN EN 12729 for temporary connection to potable water supply installed outside of buildings
带减压区的可控防回流阀——符合DIN EN 12729的B系列A型 用于临时连接安装在建筑物外的饮用水供应

2017-10-01

现行

BS EN 14454-2005

Devices to prevent pollution by backflow of potable water. Hose union backflow preventer DN 15 to DN 32 inclusive. Family H, type A
防止饮用水回流污染的装置 软管接头防回流阀DN 15至DN 32 包括在内 H家族 A型

2006-10-31

现行

ASSE(Plumbing) 1053-2019(R2023)

Performance Requirements for Dual Check Backflow Preventer Wall Hydrants - Freeze Resistant Type
双止回防回流壁消防栓的性能要求.防冻型

现行

DIN EN 13076

Devices to prevent pollution by backflow of potable water - Unrestricted air gap - Family A - Type A
防止饮用水回流污染的装置-无限制气隙-A系列-A类；德文版EN 13076:2003

2004-05-01

现行

BS EN 13076-2003

Devices to prevent pollution by backflow of potable water. Unrestricted air gap. Family A. Type A
防止饮用水回流污染的装置 无限制气隙 A族A型

2003-04-01

现行

UNE-EN 13076-2003

Devices to prevent pollution by backflow of potable water - Unrestricted air gap-Family A - Type A
防止饮用水回流污染的装置.无限制气隙系列A.A型

2003-11-14

现行

ASSE(Plumbing) 1053-2019(R2023)

Performance Requirements for Dual Check Backflow Preventer Wall Hydrants - Freeze Resistant Type
双止回防回流壁消防栓的性能要求.防冻型

现行

BS EN 13079-2003

Devices to prevent pollution by backflow of potable water. Air gap with injector. Family A. Type D
防止饮用水回流污染的装置 带喷油器的气隙 A族D型

2003-10-02

现行

DIN EN 13079

Devices to prevent pollution by backflow of potable water - Air gap with injector - Family A; Type D
防止饮用水回流污染的装置——带注射器的气隙——A系列；D型；德文版EN 13079:2003

2003-12-01

现行

DIN EN 14506

Devices to prevent pollution by backflow of potable water - Automatic diverter - Family H, type C
防止饮用水回流污染的装置——自动分流器——H系列 C型；德文版EN 14506:2005

2005-08-01

现行

BS EN 14506-2005

Devices to prevent pollution by backflow of potable water. Automatic diverter. Family H, type C
防止饮用水回流污染的装置 自动分流器 H族 C型

2009-03-31