<p>A pressure control valve (80 fr) delivers a pressure which is proportional to a current level chosen to energize a solenoid (99) therein to a shock absorber of a suspension. A spool (90) in the valve (80 fr) has an annular groove (91) for communicating an output port (84) to a high pressure port (87) or a low pressure port (85) selectively. There are conical surfaces (91a) or inclined surfaces at edges of lands adjacent to the groove (91), which incline from annular surfaces of the lands toward the bottom of the groove. The inclined surfaces slow down a change of the flow rate from the high pressure port to the output port (84) and from the output port to the low pressure port (85) when the annular groove (91) communicates with the high pressure port (87) and the low pressure port (85) respectively.</p>
