Xomox Corporation

David E Klotter

Michael J Sandling

M R Ramakrishnan

Thomas F Spock, Jr

Edward Scheid

Steve Kirk

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 has an actuating shaft packing assembly for located in a valve enclosure cover for preventing leakage of process fluid into the space between the actuating shaft and the cylindrical sidewall of a bore in the cover. The assembly includes an annular lip located at the axial end of the bore proximal to the fluid control member. The lip extends axially away from the fluid control member. An annular sealing ring is positioned between the lip and the cylindrical sidewall of the bore and formed of a material having a greater coefficient of thermal expansion than the valve body or actuating shaft. The annular ring shrinks when cooled and increases the sealing effectiveness between the sealing ring and the lip for enhanced suppression of fluid flow between the sealing assembly and the cylindrical sidewall.

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Cincinnati, OH, United States of America

David E Klotter