CONTROL VALVE INDEPENDENT OF PRESSURE Russian patent published in 2015 - IPC F16K1/12 F16K31/524 

FIELD: machine building.

SUBSTANCE: group of inventions refers to valve industry and is intended to be used as a control valve at pipelines. A control valve comprises a wall forming a chamber that includes an inlet end (8), a central section (48) and an outlet end (46) set on the same axis, a valve seat (16) and a valve plunger (4, 21, 20, 19, 11). At least the valve seat (16) or the valve plunger (4, 21, 20, 19, 11) is or are made with the possibility of axial movement towards each other. Relative movement between the valve plunger and the valve seat is provided by a cam mechanism. The latter comprises the first shaft unit (14, 15, 28) passing in the axial direction of the chamber and attached to the plunger (4, 21, 20, 19, 11) or the valve seat (16), a cam (24) for interaction with the first shaft unit (14, 15, 28) and the second shaft unit (2) connected to the cam (24), passing through the central section (48) of the chamber wall ending with a free end to be attached to the rotary actuator (50). There proposed is the version of the control valve with a line differential pressure regulator, a pipe comprising the control valve, and a hydraulic system comprising the said pipe.

EFFECT: group of inventions is aimed at the decrease of the valve overall dimensions, simplification of control units providing for simple adjustment of the control valve with low torque and its easy replacement.

10 cl, 2 dwg