CONTROL VALVE (VERSIONS) Russian patent published in 2010 - IPC F16K1/12 F16K31/08 

FIELD: machine building.

SUBSTANCE: control valve consists of case, of shutting off element, positioned coaxially to case, fixed from turning over and performing axial travels, of driving and driven magnetic half-couplings, of drive and of seat. According to the first version the shut-off element corresponds to a hollow cylinder with a stepped external surface and orifices from the side of the seat for working medium flow. According to the second version the shut-off element has a shape of a shaft with a stepped external surface. In both versions the shut-off element is coupled directly with the driven half-coupling. As well, as the driving half-coupling, the driven half-coupling has maximal even number of permanent magnets. A magnet stop is arranged at the end of the driving half-coupling.

EFFECT: device disclosed by group of inventions is simple in design and in process of fabrication, has small dimensions; facilitates accurate fixation of driving magnet half-coupling position, is reliable in operation and ensures high degree of pressure tightness.

2 cl, 5 dwg