| 摘要 |
A system utilizing at least three separate water pumps for supplying water under pressure to a plurality of nozzles in a fountain display which provides a wide variety of spray heights of the various nozzles. The nozzles are spaced along a main water supply pipe and the pumps are connected to the main water supply pipe at spaced apart entry points along the pipe with a one-way check valve between each pump and the mainwater supply pipe. An independently controllable and incrementally variable gate valve is also located between each pump and the main water supply pipe. Additional versatility and variety of the sprays projected from the nozzles can be obtained by use of additional check valves located along the main water supply pipe between each of the entry points of water supplied by the pumps which pass water under pressure only in one or the other direction.
|
