Hybrid rotary control valve assembly

Details Hybrid rotary control valve assembly Hybrid rotary control valve assembly

1995-02-13

1997-04-08

Nguyen, Hoang

Valves and valve actuation

Pivoted valves

251314, 251363, F16K 116, F16K 500

Patent

active

056180268

ABSTRACT:
There is provided a hybrid rotary control valve for use on existing rotary concentric control valve, or ball valve, platforms. In particular, the hybrid rotary control valve comprises a concentric valve chamber, adjustable valve seat, eccentric control valve plug, and retainer. In addition, a flexible seal or ring is situated between the adjustable valve seat and retainer to provide adjustable positioning of the adjustable valve seat when installed about a flow channel of the valve chamber and dynamic adjusting of the adjustable valve seat when engaged and disengaged by the eccentric control valve plug. Further, the adjustable valve seat includes an orifice that is offset from the center axis of the valve seat. By rotating the position of the valve seat, the flow characteristic of the control valve may be adjusted in an economical and efficient manner.

REFERENCES:
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patent: 3064940 (1962-11-01), Anderson et al.
patent: 3254872 (1966-06-01), Roos
patent: 3379408 (1968-04-01), Lowrey
patent: 3520513 (1970-07-01), Okerblom
patent: 3674238 (1972-07-01), Pickles et al.
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patent: 4118008 (1978-10-01), Meyers
patent: 4121607 (1978-10-01), Bader
patent: 4640492 (1987-02-01), Carlson, Jr.
patent: 4863144 (1989-09-01), Wilson et al.
patent: 5170992 (1992-12-01), Lenberg
DeZurik Corporation, "DeZurik K-Max Rotary Control Valves", Bulletin 58.00-1 (Nov. 1989).

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