PRESSURE REGULATOR Russian patent published in 1994 - IPC

FIELD: automatic-control devices. SUBSTANCE: pressure regulator has disk-type main control valve and discharge piston fixed together by means of hollow cylinder with holes to pass medium that accommodates additional valve; one of ends of hollow cylinder functions as seat for additional valve whose shank is stepped structure joined with thrust bush one of whose ends engages discharge piston during displacement of additional valve; spring is installed between thrust bush and discharge piston. EFFECT: enlarged functional capabilities; extended flow control range; improved reliability due to improved stability to continuous-wave self-excited oscillations of moving system. 1 dwg