Xomox Corporation

Michael J Sandling

Steven M Kirk

M R Ramakrishnan

David E Klotter

Edward Scheid

A stem seal assembly comprises a stem having a top end and a bottom end. The stem is adapted to fit in a valve body and interface with the valving member. A ball segment integral to the stem has a top surface facing upwardly and a bottom surface facing downwardly. A first seal engages the top surface of the ball segment and the second seal engages the bottom surface of the ball segment.

Ball stem seal

A composite sealing unit for sealing between moving parts in a valve is disclosed. The sealing unit has a sealing portion that interfaces with the moving parts and is adapted to isolate a reinforcing portion from media within the valve. The reinforcing portion, which can be encapsulated within the sealing unit, is operative to enhance the resiliency of the sealing unit.

Composite valve seal

A valve with a rotatable valving member has a vent hole extending between an internal cavity of the valve and another location to which excess pressure can be vented. The vent hole is sealed with a consumable vent hole seal device that ruptures or otherwise vents under the high temperature and/or pressure of a fire and prevents dangerous pressure buildup within the internal cavity of the valve.

Valve with consumable vent hole seal device

A valve assembly for securing a valve cover to a valve body includes a fastening arrangement wherein the fasteners are free of tensile stress. In one arrangement, an outwardly extending retaining skirt is disposed about an access opening in a valve body and a cover member is secured to the retaining skirt. Threaded fasteners extend from the cover member and compressingly engage seals about the access opening.

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Loveland, OH, United States of America

Michael J Sandling