以下为句子列表：
英文: Especially made for testing all reduced pressure zone backflow preventers.
中文: 专用于检测所有减压区防回流阀。
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英文: Open test cock No. 4 and flush test cocks Nos. 1, 2 and 3 on reduced pressure assembly then close test cock No. 4.
中文: 开启测试旋塞4号，冲洗减压总成上的测试旋塞1号，2号和3号，然后关闭测试旋塞4号。
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英文: Series 909 Reduced Pressure Zone Assemblies are designed to provide crossconnection control protection of the potable water supply in accordance with national plumbing codes.
中文: 系列909减压区总成具有饮用水供应系统交叉连接管理功能，符合美国国家管道行业的有关规定。
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英文: Series 909RPDA Reduced Pressure Detector Assemblies are used in health hazard applications and are designed exclusively for use in accordance with water utility authority containment requirements.
中文: 系列909RPDA减压检测器总成用于健康危害应用场合，专门用于符合自来水公司主管部门有关密封要求的应用场合。
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英文: Series 995 Reduced Pressure Zone Assemblies are designed to protect the potable water supply in accordance with national plumbing codes and water authority requirements.
中文: 系列995减压区总成适用于按照美国国家管道规程和水主管部门的要求保护饮用水供应系统。
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