| 摘要 |
<p>A multiple high pressure liquid nozzled gun system and flow controller (10) therefor. The flow controller (10) permits the connection of two guns and allows activation or de-activation of one gun without affecting the other gun. The flow controller has multiple internal channels (38, 74, 76) which re-direct liquid flow upon discharge of liquid (water) through the gun to "dump". The flow controller (10) has high pressure channels (92) through which liquid under high pressure flows to the gun nozzles, and alternate channels (38) through which liquid may flow when the guns are in a trigger-released or "dump" mode permitting liquid to flow through the controller (10), to the gun, and out of the gun's dump port. The piston arrangement includes a piston (28) and spool (78). High pressure delivery means in the alternate channels (38) comprise orifice means (68) preferably formed by a needle valve (64) and seat (66) and being adjustable. A spool actuating channel (74, 76) extends between an outlet channel (42) and piston channel (106) so as to transmit fluid pressure at output means (36) to the spool (78) in opposition to biasing means (26) acting on the piston (28).</p> |
