flapper-valve controller

例句：

1. 1.The spray valve controller is responsible for controlling the flow of water in the sprinkler system.
   喷雾阀控制器负责控制喷灌系统中水流的流动。
2. 2. The spray valve controller is designed to prevent leaks and ensure proper water distribution.
   喷雾阀控制器设计用来防止泄漏并确保适当的水分配。
3. 3. The spray valve controller is an essential component of the sprinkler system, ensuring that water is evenly distributed throughout the lawn.
   喷雾阀控制器是洒水系统的一个关键组件，确保草坪上的水均匀分布。