Valves and valve actuation – Rotary valves – Plug
Patent
1973-05-09
1977-07-19
Dority, Jr., Carroll B.
Valves and valve actuation
Rotary valves
Plug
251192, 251283, 251315, F16K 506
Patent
active
040364704
ABSTRACT:
The valve body is in the form of a segmented ball section and is integrally formed on a rotatable spindle as a cantilevered extension of the spindle. The segmented ball section includes an annular seating surface on one side for seating and sealing engagement with a valve seat in one of the openings of the valve. The opposite surface of the extension is substantially flat to present a limited profile to flow when the valve body is moved out of sealing engagement with the valve seat into an open position. The configuration of the valve body places 20% less ball structure in the flowing stream compared to existing partial ball constructions. The one-sided mounting of the valve body permits complete removal of trim for maintenance or replacement without removal of the valve body from a pipeline. Thus, "out of line" trim changes can be made without having to pull the valve from the pipe.
REFERENCES:
patent: 2803426 (1957-08-01), De Zurik
patent: 2907548 (1959-10-01), Haas et al.
patent: 2934311 (1960-04-01), Sjoholm
patent: 3214133 (1965-10-01), Rodgers et al.
patent: 3456916 (1969-07-01), Ytzen et al.
patent: 3475003 (1969-10-01), Paluszek
patent: 3475003 (1969-10-01), Paluszek
patent: 3779511 (1973-12-01), Wenglar
Mechanics of Materials, Miller et al, International Textbook Company, pp. 256, 257.
Dority Jr. Carroll B.
Kieley & Mueller, Inc.
Lazarus Ira S.
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