FLOAT-OPERATED DISCHARGE VALVE USED IN FLUSHING TANK OF LAVATORY PAN Russian patent published in 2006 - IPC E03D1/32 E03D3/04 

FIELD: sanitary equipment, particularly water flushing devices thereof.

SUBSTANCE: float-operated inlet valve for flushing tank comprises body made as hollow cylinder with inlet and outlet orifices and transversal partition with axial throttling orifice, which divides body interior into inlet and outlet cavities. Valve also comprises water channels, which connect above body cavities, annular valve seat arranged around above outlet orifice, movable valve member, namely flexible membrane with throttling orifices crossing the body and connected thereto. The membrane is installed so that the first membrane side defines working space between the membrane and the seat and the second membrane side creates backpressure chamber with transversal partition adapted to support the membrane. Membrane orifice communicating backpressure chamber with above outlet body orifice is closed with closing member. The closing member is made as pusher arranged in above outlet orifice and kinematically connected with float so that closing member closes the orifice simultaneously with full float ascending. Water filtering member may be arranged in inlet body chamber.

EFFECT: simplified valve structure and improved technical and operational characteristics thereof, namely increased service life and reliability.

2 cl, 1 dwg