Abstract: A regenerative valve which includes a valve body having a bore therein intersected by first and second control passages connected respectively to a four-way directional control valve; the bore is also intersected by first and second cylinder control cavities connecting with the head end and rod end respectively of a double-acting cylinder; a check valve poppet is seated in said bore blocking flow to the head chamber of the cylinder. A shuttle spool is also positioned in said bore and is movable between a first working position allowing the cylinder to retract its piston and a regeneration position opening flow across the first and second cylinder control cavities while blocking flow to the second control passage. The shuttle spool engages the poppet member in its regeneration position causing the poppet to open a flow path from the first control passage to the first cylinder control cavity and thereby allow regeneration flow.

Abstract: The invention is an improved pressure compensating flow limiting valve which maintains an optimum performance curve at differing flow rates. The invention is the specific placing of a vent passage in the valve spool immediately downstream of the fluid jet passing across the spool in a metering mode with the vent passage connected to one of the servo chambers which positions the spool. The effect of the exiting fluid jet draws some fluid from the vent passage thereby dropping the pressure level in that servo chamber sufficiently to offset certain dynamic forces on the spool and balance the spring forces on the spool with these forces regardless of the flow rate through the valve.