Modulating hydraulic pressure control valve and assembly method therefor

Abstract From the Canadian patent

A hydraulic pressure control valve includes a modulator-controlled solenoid assembly which selectively axially displaces a disc armature adjacent thereto. When not attracted by the solenoid, the armature is biased away from the solenoid by a wave spring. Movement of the armature opens and closes the outlet of a lower body member to a source of hydraulic fluid under pressure. The armature is improved, having dimples on the face adjacent the solenoid assembly to minimize sticking. Additionally the center pole of the solenoid is axially adjustable and can therefore be set for different valve performance levels. Assembly of the valve is quickly accomplished using pneumatic pressure under …