Back siphonage backflow vacuum breakers 倒虹吸回流真空關閉閥
Main anti - siphonage pipe 總反虹吸管
The figure 85 and 90m are designed to employ an integral back - flow prevention device to prevent potential back - siphonage 型號85和90m結構上配置一個一體式防回流裝置,用以防止潛在的反虹吸現象。
Series 800m4fr is designed to prevent back - siphonage of contaminated water under continuous pressure into the potable water supply 系列800m4fr用于防止在連續壓力下污染水反虹吸進入飲用水供應系統中。
Series n388 represents a new line of vacuum breakers designed to prevent back - siphonage of contaminated water into the potable water supply 系列n388代表新型真空斷路閥,適用于防止污染水反虹吸進入飲用水供應系統中。