B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
299/22
B05B 1/00 (2006.01) B05B 1/30 (2006.01) B05B 9/01 (2006.01) B05B 9/04 (2006.01) B05B 12/00 (2006.01) F16K 31/383 (2006.01)
Patent
CA 1148586
ABSTRACT OF THE DISCLOSURE In a high pressure fluid system for providing fluid to a hand held nozzle, an improved power assisted dump valve which may be remotely located and controlled. The dump valve includes a stepped piston positioned in a stepped bore with one end of the piston adapted for sealing off a pressure relief outlet. A fluid conduit, preferably a passageway through the piston, conducts high pressure fluid to the valve chamber at the large diameter end of the piston. A control valve either seals off the large diameter end of the chamber or vents it to ambient pressure so that differential pressure supplied by the working fluid itself drives the valve piston to its open or closed positions. An electrical, hydraulic, or mechanical actu- ator operates the control valve, remotely if desired, to control the flow of high pressure fluid to the nozzle.
363295
Borden Ladner Gervais Llp
Partek Corporation Of Houston
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