TOILET FLUSH VALVE WITH REDUCING CROSS SECTION OF VALVE SEAT Russian patent published in 2013 - IPC E03D1/34 

FIELD: construction.

SUBSTANCE: flush valve comprises a fixture having a lower end, an upper end in the form of a valve seat, a through hole stretching down from the valve seat and a guide part. The guide part is installed in the through hole and stretches upwards from it. The valve body provides for restraint of water flow by means of the fixture, when it is in the first position. At the same time when the body is located in the valve seat, the valve body provides for water flow through the fixture, when it is in the second position, in which the body is not arranged in the valve seat. The valve body is made in the form of a canister. The through hole narrows down below the valve seat. The fixture applied as a part of the flush valve comprises a body in the form of a sleeve and having a lower end, simplifying installation of the body near the hole, the upper end in the form of the valve seat, a through hole stretching down from the valve seat, and a guide stand. The stand is fixed in the through hole and stretches upwards above the valve seat. The through hole narrows down below the valve seat. A sanitary unit comprises a toilet bowl, a tank for water storage and a flush valve installed in the outlet hole. The tank comprises a lower outlet hole for provision of water passage from the tank into the toilet bowl.

EFFECT: improved operation of valves for flow of water drain for quick passage into a sanitary unit, as soon as flushing has started.

10 cl, 11 dwg