Combined metering valve and pressure regulating valve

摘要

A valve element combines a metering function and a pressure regulating function. A valve housing (19) houses a metering valve (24). The metering valve is movable by a control to meter an amount of fluid delivered from an inlet (26) to an outlet (37). A pressure regulating valve (34) is received within the valve housing and is supplied with a pressure delivered into the inlet on a first face, and a pressure downstream of the outlet on a second face. The pressure regulating valve acts to regulate the pressure drop across the metering valve to ensure accurate fluid metering.