GAS PRESSURE REGULATOR Russian patent published in 1999 - IPC

FIELD: control fittings of gas systems. SUBSTANCE: gas pressure regulator includes diaphragm connected with shut-off plate, main positive back coupling in form of double-arm levers whose some arms are connected with shut-off plate, negative back coupling in form of compression spring, additional positive back coupling in form of two similar extension springs equipped with movable support which is connected with double-arm levers; its contact surface is profiled. When support of spring changes its position under action of medium, levers turn about axes; arms of levers acted on by springs change their length, thus changing force of action of these springs. EFFECT: simplified construction; reduced overall dimensions. 1 dwg