MULTIPURPOSE SINGLE-STAGE VALVE Russian patent published in 2008 - IPC F16K3/08 F16K31/08 

FIELD: engines and pumps.

SUBSTANCE: invention relates to pipeline valves and accessories and is designed to control flow rates of liquid or gaseous media, including aggressive, explosive and toxic media. The multipurpose single-stage valve incorporates a body with inlet and outlet branch pipes, an actuator and a unit transmitting adjusting forces from the control device made up of a coupling with a permanent magnet radial system. The actuator is arranged perpendicular to the body lengthwise axis and made up of a fixed seat with through openings and a moving plate-type multipurpose slide valve, the latter being arranged on the end face of the driven half-coupling with the said radial system of permanent magnets. The aforesaid driven half-coupling is arranged aligned with the body and interacts with the radial system of permanent magnets of the driving half-coupling. The said driving half-coupling is arranged outside the body aligned with it and coupled with the drive that makes it move. The radial system of permanent magnets of the driven half-coupling is axially shifted relative to that of the driving half-coupling by a preset size depending upon the valves diameter and working medium pressure.

EFFECT: higher safety, tightness, reliability and longer life, given there is no contact between working medium and driving mechanism.

2 cl, 2 dwg