FIELD: machine building.
SUBSTANCE: one or more of the following components can be located in a valve assembly on fluid medium passage way: a pressure control, a dosing valve and an on-off device. A rotary gear is connected in-line to the dosing valve, and a manual control element installed so that it can be rotated about the axis is connected to the valve assembly and includes a gear rack that is moved by means of the above manual control element. A spring pushes the gear rack to the gear. The fluid medium control also includes Ј balanced mechanism of gear transmission for rotation of a control valve spindle; besides, it can be adapted for installation of different visual indicators signalling on the on-off state of the device.
EFFECT: improving adjustment accuracy and reducing play between internal components.
37 cl, 21 dwg
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