CONTROL VALVE (VERSIONS) Russian patent published in 2015 - IPC F16K7/07 F16K1/12 

FIELD: machine building.

SUBSTANCE: invention relates to pipeline fittings and can be used in metallurgical, chemical, petrochemical and other industries. The control valve contains a housing with inlet and outlet openings, a hollow elastic working body and a coil together fixed coaxially in the housing, meanwhile the coil has a rod, convex towards the hollow elastic working member, and the external surface of the hollow elastic working member and the internal surface of the housing form regulating cavity connected to the control device through the opening in the housing. The hollow elastic working body is reinforced by flexible rigid threads and designed as a rotation body with generatrix, convex towards a coil rod, and touching it in a free non-working state. The control device is designed as a three-way changeover valve which through the inlet tubes is connected with inlet and outlet openings of the housing and in the first position it connects the regulating cavity with the inlet opening of the housing, in the second position it connects the regulating cavity with the outlet opening of the housing, in the third position it blocks the opening in the housing. There are four versions of control valves.

EFFECT: design improvement.

6 cl, 5 dwg