Flush valve

Details Flush valve Flush valve

1995-09-27

1997-04-15

Michalsky, Gerald A.

Fluid handling

Processes

251147, 251154, 251228, 251237, 251262, 251284, 251299, 251303, F16K 124

Patent

active

056200153

ABSTRACT:
A valve for sealing a pipe opening with a seal plate movably attached to the pipe opening and a valve body fixed to the pipe opening. Moving the seal plate towards the pipe opening closes the valve, and moving the seal plate away from the pipe opening opens the valve. The valve body includes a plate stop to limit the movement of the seal plate relative to the pipe opening. For instance, the seal plate, when forced fully away from the pipe opening, is forced to define an oblique plane that is oblique to the plane of the pipe opening. A method of sealing and then unsealing a pipe opening incorporating such a seal plate is also included.

REFERENCES:
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patent: 3119594 (1964-01-01), Heggem
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patent: 3654942 (1972-04-01), Mayer
patent: 3995435 (1976-12-01), Waterston
patent: 4022421 (1977-05-01), Carlin
patent: 4770392 (1988-09-01), Schmidt
patent: 4785844 (1988-11-01), Pankov
patent: 4899979 (1990-02-01), Stamp
patent: 4913398 (1990-04-01), Ziaylek, Jr. et al.
patent: 5046408 (1991-09-01), Eugenio
Installation and Maintenance Instructions for SF 12X20 MKII Superflush Valve.

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