ACTUATING CONTROL MECHANISM FOR OPERATION OF VALVE IN MODULATING FREQUENCY MODE Russian patent published in 1998 - IPC

FIELD: control and regulating mechanisms of valves fitted in pipe lines for transfer of high-pressure gas to low-pressure line whose pressure should not exceed preset magnitude from the stranpoint of safety. SUBSTANCE: control of actuating mechanism is effected by means of microprocessor 20 or 33 which acts on system of electric valves which are fitted in such positions which exclude escape of gas into atmosphere during displacement of actuating mechanism 5. EFFECT: enhanced reliability. 8 cl, 6 dwg