A double check valve assembly shall be installed at each noted location.

双止回阀总成应该安装在每个指定的位置.

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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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Series 719 Double Check Valve Assembly shall be installed at each noted location.

系列719双止回阀总成应该安装在每个标注的位置上.

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The TK - DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.

TK-DL可以检测压力真空断路阀, 减压防回流阀或双止回阀总成.

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