Valves and valve actuation – Rotary valves – Plug
Patent
1977-04-01
1980-03-18
Cline, William R.
Valves and valve actuation
Rotary valves
Plug
251304, 251315, 251317, F16K 500
Patent
active
041935802
ABSTRACT:
A valve, of the type employing a plug rotatable through substantially 90.degree. between open and closed valve positions, employs a plug which has an elongated configuration along its axis of rotation with the opposing ends of said elongated plug each exhibiting a spherical, ellipsoidal, or other curved configuration that merges smoothly into the elongated sides of the plug. The plug is provided with a passageway which is elongated in the direction of elongation of the plug and which extends through the plug in a direction transverse to the axis of rotation of the plug. The plug surface is sealed relative to the valve housing by at least one continuous seat of elongated closed loop configuration which engages the surface of the plug along a continuous noncircular line or band having a direction of elongation extending generally in the same direction as the central axis of the plug. The valving and sealing functions of the improved valve are similar to those of a conventional spherical ball valve, but achieve a given port area by use of a plug having a smaller cross section relative to the turning axis, than would be required of a ball exhibiting that port area.
REFERENCES:
patent: Re24102 (1955-12-01), Ohls
patent: 369613 (1887-09-01), Powell
patent: 477605 (1892-06-01), Pratt
patent: 1299428 (1919-04-01), Cheeks
patent: 1451588 (1923-04-01), Reidt
patent: 2297161 (1942-09-01), Newton
patent: 2505270 (1950-04-01), Allen
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patent: 2898081 (1959-08-01), Johnson
patent: 3133723 (1964-05-01), Goldman et al.
patent: 3593960 (1971-07-01), Scaramucci
patent: 3700210 (1972-10-01), Manoogian
patent: 3722856 (1973-03-01), Koch et al.
patent: 3985152 (1976-10-01), Albanese
Dykes Charles H.
Norris Lewis H.
Cline William R.
Spiegel H. Jay
Worchester Controls AG
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