| 摘要 |
A novel four passage intake nozzle and valve structure is provided for use with a specially designed, novel water deflection member to provide a pop-up water spray nozzle. The novel intake nozzle and valve structure includes a hollow valve plug, having a lower cylindrical portion provided with four specified longitudinally-extending passages, and an upper cylindrical portion provided with four specified, longitudinally-extending passages the upper and lower passages surrounding a central core. The upper passages are connected to associated lower passages through an associated, smaller diameter aperture. Parts in the valve plug, communicate with an associated one of the four lower passages. An apertured disc, is rotatably movably connected to the valve plug, by means of a shaft disposed within the central, hollow core, the apertured disc having ports therein, the leading edges of the ports therein being adapted to index precisely with the leading edges of selected ports of the valve plug. The upstream side thereof is connected to a water-conducting conduit, and the downstream side thereof is connected to a water spray structure. Upon rotation of the apertured disc the size of the spray area, or full square pattern may be selected and controlled at will.
|
