PRESSURE REGULATOR Russian patent published in 1995 - IPC

FIELD: hydraulic engineering. SUBSTANCE: pressure regulator has reduction and safety valves. The slides of the valves and housing bores define the inlet and outlet spaces and two control spaces. A spring is housed in one of the spaces. The spring of the reduction valve can be adjusted. The housings of the valves are made up as threaded bushings mounted coaxially one inside the other. The inlet and outlet spaces of the safety valve are connected with power source and consumer respectively. The spring control space is in communication with the inlet space through a throttle. The inlet and outlet spaces of the reduction valve are in communication with the spring space of the safety valve and drain respectively. The reduction valve control space without the spring is in communication with the outlet space of the safety valve. EFFECT: enhanced reliability. 1 dwg