室内 - 图1
Indoors - Figure 1

　　核对当地关于安装要求的有关规定。管道应该经过彻底的清洗，在安装本装置之前清除所有外来杂质。应该如图所示安装一个过滤器，位于防回流阀前面以防止阀瓣不会产生不必要的积垢。在管道上安装阀门，使其阀门的箭头指向流体流动方向。
　　Check local codes for installation requirements. Pipe lines should be thoroughly flushed to remove foreign material before installing the unit. A strainer should be installed as shown, ahead of backflow preventer to prevent disc from unnecessary fouling. Install valve in the line with arrow on valve body pointing in the direction of flow.
　　对于室内安装，重要的是要使得阀门易于进行测试和维修。不要安装在一个隐蔽的位置。
　　For indoor installations, it is important that the valve be easily accessible to facilitate testing and servicing. Do not install in a concealed location.
　　警告：如果防回流阀安装在只在紧急时候使用，而平时很少使用的水管上，例如消防喷洒系统等管道上，则不要安装过滤器。重要的是要定期检测系列007的性能是否符合当地的有关规定，根据系统的状况，每年至少检测一次以上。要定期进行检查、测试和清洗以确保使用寿命最长，使用性能最好。
　　CAUTION: Do not install with strainer when backflow preventer is used on seldom-used water lines which are called upon during emergencies, such as fire sprinkler lines, etc. It is important that Series 007 be tested periodically in compliance with local codes, but at least once a year or more often depending upon system conditions. Regular inspection, testing and cleaning assures maximum life and proper product function.
　　注意：消防系统安装
　　美国消防代理机构指南要求在"主管道"阀门，如关闭阀或防回流阀总成运行后，必须进行一次经过认可的流量检测。必须由经过认证的防回流阀总成检测人员进行这种检测。
　　通过流量检测的阀内件。
　　阀内件通过检测后，必须恢复到全开位置。
　　NOTE: Fire Protection System Installations
　　The National Fire Protection Agency (NFPA) Guidelines require a confirming flow test to be conducted whenever a "main line" valve such as the shut-off valves or a backflow assembly have been operated. Certified testers of backflow assemblies must conduct this test.
　　The trim valves of the confirming flow test.
　　When the test is completed the trim valves must be returned to a fully open position.

室外 - 图2
Outside - Figure 2

仪表箱
Meter Box Installation

并联 - 图3
Parallel - Figure 3

　　两个或更多的系列007小通径阀门可以采用并联管道(在经过认可的位置)，以满足更大通径的主供水管道的需求。这种安装形式用于必须保持连续的水供应，或者在检测和应用期间不允许出现中断的地方。此外，这种安装形式还具有提供更大性能的优点，能够满足超过单个阀门性能的要求，使得在检测或应用某个独立的阀门时，不需要关闭整个管道。
　　Two or more Series 007 smaller size valves may be piped in parallel (where approved) to serve a larger supply pipe main. This type of installation is employed whenever it is vital to maintain a continuous supply of water/where interruptions for testing and servicing would be unacceptable. It also has the advantage of providing increased capacity where needed beyond that provided by a single valve and permits testing or servicing of an individual valve without shutting down the complete line.
　　两个阀门的安装形式，其整体性能应该等于或超过系统的需求。并联管道所需的阀门数量应该由工程师根据特定安装的应用环境进行判断决定。
　　For two valve installations the total capacity of the devices should equal or exceed that required by the system. The quantity of valves used in parallel should be determined by the engineers judgement based on the operating conditions of a specific installation.

图1
Figure 1

007QT-S

007QT-S垂直向上流动或垂直向下流动安装
(图示为向上流动)
007QT-S Vertical flow-up or vertical flow-down
installation (flow-up shown)

图2
Figure 2

玻璃纤维WattsBox
Fiberglass WattsBox

现在可提供WattsBox绝缘隔热保护柜
需要更多的资料，请参阅ES-WB或ES-WB-T.
Now Available, WattsBox Insulated Enclosures.
For more information, send for ES-WB or ES-WB-T.

图3
Figure 3

007QT-S