Valves and valve actuation – Rotary valves – Seat or interface seal
Patent
1984-04-02
1986-03-11
Chambers, A. Michael
Valves and valve actuation
Rotary valves
Seat or interface seal
251306, 251360, 251363, 137315, 137 15, 403348, F16K 122
Patent
active
045750467
ABSTRACT:
A recessed seat retainer for a valve is secured in an annular recess on the face of a valve body by a totally internally disposed key system which does not create an external leak path. An annular keyway is formed in the cylindrical sidewall of a seat retainer. A key extends from the cylindrical sidewall of an annular recess formed in an axial face of the valve body. The key is received in the keyway and locks the retainer against axial dislodgement from the valve body.
REFERENCES:
patent: 2571352 (1951-10-01), Fast
patent: 3269691 (1966-08-01), Meima et al.
patent: 3937441 (1976-02-01), Baumann
patent: 4258901 (1981-03-01), Zinnai et al.
patent: 4289296 (1981-09-01), Krause
patent: 4399833 (1983-08-01), Holtgraver
patent: 4508315 (1985-04-01), Livorsi et al.
Brochure of ITT Grinnell Valve Co., Inc., entitled "Dyna-Lok High Performance Butterfly Valves"; 9/1980.
Fisher Type 8555 Eccentric Disc Control Valves, Bulletin 51.6:8555, pp. 1 and 2; 1981.
Flexitallic Gasket Company, Inc., Bulletin 171, 1976, Second Edition.
Valtek Brochure.
Brochure of British Company Charles Winn Limited, entitled "Winn Replaceable Seat Butterfly Valves"; 1978.
Hoelscher Wayne L.
Krause Bernd
Scroggin William F.
Chambers A. Michael
Fox John C.
Xomox Corporation
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