Film for flush valve and positioning set thereof

Details Film for flush valve and positioning set thereof Film for flush valve and positioning set thereof

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 25/00 (2006.01) E03D 3/06 (2006.01) F16K 7/12 (2006.01) F16K 21/04 (2006.01)

Patent

CA 2696064

A film for a flush valve being integrally made of ethylene propylene diene monomer, and a hardness of the film being between shore A 70 ~ 5 degrees; a second top surface of a pressed portion the film includes a plurality of projected members arranged evenly thereon, a sum of areas of the projected members is between 12%-33% of an area of the second top surface of the pressed portion; the film being limited between a flowing loop of a positioning seat and a seat to expand and retract properly; the flowing loop including a circular recess formed on an upper side of the second fixing border to decrease a friction area as the film retracts to stabilize the retracted film; such that the film is deformed by the water pressure to expand and retract suitably so as to achieve stable water flush and water stop.

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