以下为句子列表：
英文: Series 007DCDA Double Check Detector Assemblies are designed exclusively for use in accordance with water utility authority on non-health hazard containment requirements.
中文: 系列007DCDA双止回阀检测总成专用于符合自来水主管部门非健康危害密封要求的应用场合。
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英文: Series 709DCDA Double Check Detector Assemblies are designed exclusively for use in accordance with water authority containment requirements.
中文: 系列709DCDA双止回阀检测器总成专用于满足水主管部门的密封要求的应用场合。
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英文: Series 774DCDA Double Check Detector Assemblies are designed for use in accordance with water utility non-health hazard containment requirements.
中文: 系列747DCDA双止回阀总成用于符合自来水公司非健康危害密封要求的应用场合。
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英文: Series 774XDCDA Double Check Detector Assemblies are designed to prevent the reverse flow of polluted water from entering the potable water supply.
中文: 系列747XDCDA双止回阀检测器总成用于防止污水回流进入饮用水系统中。
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英文: Series 774XDCDA contains two independently operating check valves located between two resilient seated shutoffs with four ball valve type test cocks and a hydraulically balanced metered bypass line to detect low flows.
中文: 系列774XDCDA包含两个独立运行的止回阀，位于两个弹性阀座关闭阀之间，并配置四个球阀型测试旋塞，以及一个液压平衡仪表旁路管线用于检测低流量。
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