ANSI/ASSE 1020-2004 标准详情
- 标准号:ANSI/ASSE 1020-2004
- 中文标题:压力真空断路器组件
- 英文标题:Pressure Vacuum Breakers Assembly
- 标准类别:美国国家标准
- 发布日期:2004-05-25
Pressure Vacuum Breaker Assemblies are for installation in water supply lines to prevent the entrance of non-potable material into the potable water supply by backsiphonage only. It is not for use in any system where backpressure can be applied to th
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