BALANCED BY PRESSURE FLUID MEDIUM PRESSURE REGULATOR Russian patent published in 2017 - IPC G05D16/18 

FIELD: machine building.

SUBSTANCE: invention relates to fluid medium regulators used in process control systems. Proposed fluid medium regulator comprises element controlling fluid medium flow rate, which is located in valve body fluid flow channel and moves relative to seat ring for controlled fluid flow rate variation through fluid medium channel. Valve stem connects fluid flow rate control element with actuator mechanism. Valve stem has channel to allow fluid flow from fluid flow channel inlet through said flow rate control element between first side of said flow rate control element and second side of said flow rate control element, opposite to first side for flow rate control element balancing by pressure. Invention is implemented in three versions.

EFFECT: their implementation provides such technical result as possibility of using smaller size actuator drive mechanism and, accordingly, possibility of its control by means of low force.

19 cl, 5 dwg