| 摘要 |
<p>A high pressure water control device comprising a water inlet 10, a high pressure water outlet 12, a low pressure water outlet 13 and a valve 19 for selectively communicating the inlet with one or other of the outlets. The valve is a spool valve comprising a sleeve 20 and a spool 27 slidable in the sleeve. The spool has two axially spaced apart annular seals 28, 29 and the sleeve includes an annular groove 25 in its outer surface and one or more dump ports 26 which communicate between the groove and the inside of the sleeve so that when the dump ports are disposed between the spaced apart seals of the spool high pressure water will be delivered to the high pressure water outlet. The control device may be in the form of a water gun also having an elongate nozzle 11 terminating in the high pressure outlet and a barrel 14 surrounding the nozzle and terminating in the low pressure outlet. <IMAGE></p> |
