VALVE Russian patent published in 2012 - IPC F16K15/04 F16N23/00 

FIELD: machine building.

SUBSTANCE: group of inventions refers to valve construction and is intended to be used as valve for example in lubrication of vessels or cavities under excess pressure. Valve includes a body through which a channel passes from the first hole to the second hole of the valve. The first shutoff working member is moving in valve channel to close the valve. The second shutoff working member is moving in valve channel for simultaneous closing of the valve when the valve is closed by means of the first shutoff working member as well. Rigid intermediate working member is located in the valve channel between the first and the second shutoff working members. Rigid intermediate working member is movable due to action of movement of the second shutoff working member for induction of movement of the first shutoff working member and bringing the first hole of the valve into hydrodynamic interaction with the second hole of the valve. Length of intermediate working member coordinates the separation of the closest opposite surfaces of the first and the second shutoff working members, when both the first and the second shutoff working members shut off the valve channel. Valve is closed. Valve can perform the function of a check valve and/or a lubricating valve to seal vessels or cavities under excess pressure. There are also different methods of use of the proposed valve.

EFFECT: improvement of valve operating reliability.

19 cl, 3 dwg