An inlet throttle valve for supplying liquid to a high-pressure pump has a
fully open start position and an operating range where flow through the
valve is determined by a pressure balance of a valving member independent
of the pressure of oil supplied to the inlet throttle valve. The valve
includes a hydraulic stop limiting closing movement of the valving member.
The valve may be used to flow low-pressure oil to a high-pressure pump for
supplying high-pressure oil to HEUI injectors or other components of an
internal combustion engine.
