BACK FLOW VALVE Russian patent published in 2012 - IPC F16K15/03 

FIELD: machine building.

SUBSTANCE: back flow valve contains the housing wrapped with flanges on both sides, the flow area which is blocked by a plate placed in a niche of the housing and mounted on an axis. The axis is placed in a groove in the upper part of the housing with the indents along the edges of the latter. The groove is in the form of a T-shaped slot with a central notch. The ends of the axis are made in the shape of a rectangle with a width of one side equal to the height of the base T-slot, and on the other side - the width of the slot perpendicular to the base of the T-shaped slot.

EFFECT: increased degree of maintainability of the back flow valve.

2 cl, 4 dwg