FLUSH VALVE WITH FLOW CHANNEL THAT NARROWS NON-LINEARLY Russian patent published in 2010 - IPC E03D1/38 

FIELD: construction.

SUBSTANCE: invention is related to the sphere of sanitaryware equipment. Flush valve for control of water flow from flush tank for water comprises the following components: valve body, having valve seat and forming the first hole and inner surface, which creates borders of flowing channel, which narrows non-linearly in direction from valve seat in compliance with polynomial expression, having horizontal and vertical components with various arrangement to the second hole at the second end, opposite to valve seat. At the same time the second hole has smaller size compared to the first hole and is arranged at the distance from the first hole in axial direction, in which inner surface is arranged as circular in horizontal cross section and in which inner surface narrows more considerably near the first hole compared to the second hole and narrows more smoothly closer to the second hole. Flush valve also comprises gate arranged with the possibility of its installation onto valve seat and cover of valve seat.

EFFECT: invention provides for simplicity and reliability of device.

15 cl, 8 dwg