FIELD: valve manufacturing.
SUBSTANCE: invention relates to pipeline valves, is intended for control of pressure drop of liquid or gaseous medium flow and can be used in oil and gas industry at control of level of liquid medium in gas separators, as well as shutoff valves on process lines for shutting off flow or creating preset pressure drop. Flat lever of device for control of pressure drop is arranged in plane of detachable bottom slot with possibility of transmission through hexagon and roller of torque to gate, is pivotally connected via crankshaft with spring, the other end of which is connected via tie-rod with bushing of bearing assembly of crankshaft fixed on float shaft, at that, device is equipped with crankshaft turn limiter.
EFFECT: invention is aimed at preventing of emergency situation occurrence at sharp increase of pressure drop with sudden increase of product working flow rate.
1 cl, 7 dwg
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