Series 775 Double Check Valve Assemblies provide protection of the potable water supply for non - health hazard - connections .

系列775双止回阀总成防止 交叉连接 处 非 健康危害的流体污染饮用水供应系统.

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DO NOT add any chemicals to the system piping which will contaminate the potable water supply.

不要在管道系统中添加任何可能会造成饮用水污染的任何化学物品.

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To protect the potable water supply from backflow a non - potable source due a drop in supply.

防止由于高度降低而受到 非 饮用水源回流到饮用水供应系统中.

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