Provides back siphonage protection for portable hoses connected to hose thread faucets.

具有反虹吸功能,可用于饮用水软管连接到软管螺纹水龙头的场合.

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Series 757, 757 N be installed under continuous pressure and be subjected to backpressure and back siphonage.

系列757, 757N可以安装在持续压力应用中,并且可能与反压力和反虹吸相关.

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This series is normally used in health hazard applications to protect against back siphonage and backpressure.

这个系列通常用在健康危害应用场合保护不受反虹吸和反压力的损坏.

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The 757 DCDA, 757 NDCDA be installed under continuous pressure and be subjected to backpressure and back siphonage.

系列757DCDA, 757NDCDA可以安装在持续压力应用中,并且可能与反压力和反虹吸相关.

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