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Series 774X consists of two independently operating check valves located between two resilient seated shutoffs with four ball valve type test cocks.
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系列774X有两个独立运行的止回阀，位于两个弹性阀座关闭阀之间，并配置四个球阀类型的测试旋塞。 |
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Series 774XDCDA Double Check Detector Assemblies are designed to prevent the reverse flow of polluted water from entering the potable water supply.
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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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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.
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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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Series 775 Double Check Valve Assemblies provide protection of the potable water supply for non-health hazard cross-connections.
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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 800M4FR is designed to prevent back-siphonage of contaminated water under continuous pressure into the potable water supply.
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系列800M4FR用于防止在连续压力下污染水反虹吸进入饮用水供应系统中。 |
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Series 909 Reduced Pressure Zone Assemblies are designed to provide crossconnection control protection of the potable water supply in accordance with national plumbing codes.
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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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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.
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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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Series 97FB-FSFE (flanged) and 97GB-FSGE (grooved) UL/FM Fire Service Strainers are used in conjunction with a water spray system to protect the system against clogging that can be caused by particles fouling the small discharge opening of the sprinkler h
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系列97FB-FSFE（法兰）和97GB-FSGE（沟槽）UL/FM消防应用过滤器用于与水喷淋系统一起保护系统不会由于颗粒积垢在喷淋头排泄口而导致系统堵塞。 |
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Series 994 shall be installed in a horizontal position.
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系列994应该安装在水平位置。 |
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Series 995 Reduced Pressure Zone Assemblies are designed to protect the potable water supply in accordance with national plumbing codes and water authority requirements.
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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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Series 995 must be installed in a horizontal position.
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系列995必须安装在水平位置。 |
