Itt Manufacturing Enterprises, Inc.

Itt Fluid Technology

Roy D Miller

Ronald G Butler

Wayne R Houck

John R Lehman

An apparatus for providing indication of valve position of a manual valve is disclosed for a valve having a rotary, operating assembly journaled in a housing, the operating assembly comprising a handwheel, a bushing fastened to the handwheel, and a spindle threadedly engaged to the bushing to cause translation of the spindle in response to rotation of the handwheel and the bushing, the apparatus for enclosure in the housing comprising a hub coupled to the bushing for transmitting rotary motion in response to rotation of the bushing; translation means for translating the rotary motion into an electrical signal; and circuitry means responsive to the electrical signal for indicating position of the valve.

Adjustable electronic position indicator apparatus

A circular body, having a throughgoing orifice, an externally threaded periphery, and a pair of stepped recesses, defines a valve seat for a reciprocating piston. A retaining ring is made fast in one of the recesses, and a seal which contracts upon cooling to the ambient, after having been exposed to elevated temperatures, is set in the other recess. The seal is formed of a composite of plastic in which are dispersed carbon fibers to render the seal resistant to creep. A housing having a pair of chambers formed therein has the orificed body and piston interposed between the chambers for valvingly controlling inter-chamber communication.

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Lancaster, PA, United States of America

Roy D Miller