
手持式淋浴器防回流裝置的性能要求 Performance Requirements for Backflow Prevention Devices for Hand-held Showers
出版:American Society of Sanitary Engineers

專(zhuān)家解讀視頻
These devices provide backflow protection against backsiphonage and backpressure in handheld showers. These are separate devices or are integral with handheld showers, tub fillers, flexible hoses, or components that are attached to a shower system. The device shall include two independently acting check valves in series or a check valve in series with a vacuum breaker feature.