Abstract: A tube assembly for a solenoid operated cartridge valve includes an adapter having an axially extending central bore along a longitudinal axis of the tube assembly for receiving an armature; a plug axially aligned with the central bore of the adapter; a nonmagnetic tube having a central bore along the longitudinal axis and aligned with the central bore of the adapter, the tube having a pair of respective annular axially-facing end surfaces abutting the adapter and the plug, the end surfaces being obliquely angled with respect to the longitudinal axis; and filler material positioned between and joining the adapter and the tube, and the tube and the plug.

Abstract: A proportional pressure control valve includes a cage housing and has an inlet, a relief outlet, and a control outlet. A relief poppet provides a proportional relief to the valve. A sleeve is received in a central bore of the cage housing. The sleeve has a fluid inlet fluidly connected to the inlet of the cage housing and has a fluid outlet fluidly connected to the relief outlet and the control outlet of the cage housing. A control piston is received in a central bore of the sleeve and is axially moveable between first and second positions therein. The control piston is configured to restrict flow through the outlet of the sleeve when the control piston is in the second position, and wherein the control piston is biased towards the first position.

Abstract: Known all wheel steer arrangements use standard spool-type valves which are inherently subject to leakage that results in the front and rear wheels getting out of synchronization due to the leakage. In the subject invention, a hydraulic system has front and rear pairs of steerable wheels respectively interconnected by front and rear fluid actuated mechanisms. A steering valve delivers pressurized fluid to the front fluid actuated mechanism for steering of only the front pair of wheels and to both the front and rear fluid actuated mechanisms to steer the front and rear pairs of wheels simultaneously but in opposite directions. Furthermore, a rear steer valve mechanism is provided to independently direct pressurized fluid to the rear fluid actuated mechanism to steer the rear pair of wheels independent of the front pair of wheels.