Hydraulic system with shadow poppet valve

Details Hydraulic system with shadow poppet valve Hydraulic system with shadow poppet valve

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15

B

F15B 13/06 (2006.01) F15B 11/00 (2006.01) F15B 11/22 (2006.01) F15B 13/04 (2006.01) F15B 13/043 (2006.01) F15B 21/08 (2006.01) F15C 3/00 (2006.01) F16K 31/00 (2006.01)

Patent

CA 2343498

A hydraulic valve assembly includes a pilot operated proportional poppet valve in which the main poppet moves in response to pressure in a first control chamber. The pressure in a first control chamber is governed by a pilot poppet and movement of the main poppet controls fluid flow between a first inlet and a first outlet. A shadow poppet valve has a shadow poppet that controls fluid flow between a second inlet and a second outlet in response to pressure in a second control chamber. The first and second control chamber are connected together whereby the pilot operated proportional poppet valve and the shadow poppet valve open and close together. A unique hydraulic system utilizing a plurality of these hydraulic valve assemblies to operate two operators alternately in parallel or in series is described.

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