FIELD: flow control valves.
SUBSTANCE: present invention relates to flow control valves, which regulate flow rate and pressure of fluid medium, supplied to drive or discharged from drive, in particular, for hydraulic or pneumatic cylinder. Flow control valve has the first flow channel 27 and the second flow channel 28, which parallel connect first hole 13a and second hole 13b. First flow channel 27 is equipped with opening and closing valve mechanism 34, which temporarily opens first flow channel 27, when fluid under pressure is supplied to first hole 13a. Second flow passage 28 is provided with throttle valve mechanism 41 that opens the second flow channel 28 in a limited way. Opening and closing valve mechanism 34 has opening and closing valve section 46, containing opening and closing valve seat 46a and opening and closing valve body 46, valve opening force generating device 47, which generates valve opening force in opening and closing valve body 46b, and valve closing delay mechanism 35, which closes valve body 46 of opening and closing valve after expiration of delay time. Throttle valve mechanism 41 has throttle valve section 67 comprising throttle opening 40 and needle 68. Flow section of opening and closing valve section 46 is larger than that of throttle valve section 67.
EFFECT: technical result is aimed at improvement of processability of the flow control valve, having small overall dimensions, and having high operating speed, when it is included in pressurized fluid medium circuit.
9 cl, 10 dwg
