Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1990-12-12
1991-12-03
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
137315, 251174, 251180, 251315, 251316, 251360, F16K 4300, F16K 520, F16K 2500
Patent
active
050692402
ABSTRACT:
A flexible seating apparatus is disclosed for use in rotary valves comprising a flexible seat ring attached to one of the valve body and valve closure member in a cantilevered fashion and maintained thereagainst by a resilient member, the latter being held captive in a pre-formed channel in the flexible seat ring. Slotted fastener holes spaced radially along the flexible seat and corresponding fasteners permit automatic axial ring adjustment and proper positioning of the flexible seat ring upon assembly and initial closure of the valve's closure member. An alternate embodiment is disclosed in which the flexible seat ring is mounted to the other of the valve body and the valve closure member. The present flexible seating apparatus can be used with rotary ball valves and butterfly valves, for example, and further, is advantageously used to permit droptight metal-to-metal valve seating.
REFERENCES:
patent: 3393697 (1968-07-01), Fawkes
patent: 3447781 (1969-06-01), Fawkes
patent: 3986699 (1976-10-01), Wucik, Jr. et al.
patent: 4006883 (1977-02-01), Hilsheimer
patent: 4082246 (1978-04-01), Rothwell
patent: 4220172 (1980-09-01), Stager
patent: 4231546 (1980-11-01), Eggleston et al.
patent: 4241895 (1980-12-01), Sternenberg et al.
patent: 4258901 (1981-03-01), Zinnai et al.
patent: 4398695 (1983-08-01), Torche
patent: 4502663 (1985-03-01), Huber
patent: 4593916 (1986-06-01), Laulhe et al.
patent: 4928921 (1990-05-01), Steele
Pp. 60-66 from the Henry Pratt Company catalog entitled "Pratt AWWA Rubber Seat Ball valves", printed Feb. 1988.
Willamette List 26-Metal Seated AWWA Ball Valves brochure by Willamette Corporation, undated.
Jamesbury Bulletin 244, entitled "Metal Seat Water-Sphere (Trademark) Butterfly Valves", from Jamesbury Corporation of Worcester, Massachusetts, undated.
Henry Pratt Company
Walton George L.
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