Abstract: A sealing valve for controlling the flow of fluid through a passage defined by the interior surface of a tubular casing comprises a valve body having a longitudinal axis and a longitudinal bore therethrough. The valve body is formed for releasable connection to the tubular casing when the valve body is inserted longitudinally into the passage of the tubular casing. A valve seat is disposed on the valve body. A sealing assembly comprises a sealing device adapted for sealing engagement with the valve seat. The sealing device is movable with respect to the valve seat from a closed sealing position in which the sealing device sealingly engages the valve seat to block fluid flow through the bore in the valve body to an open position in which the sealing device is spaced from the valve seat to permit fluid flow through the bore.

Abstract: This invention is directed to a method for inhibiting particulate material in a pneumatic tire from adversely affecting operation of a tire valve assembly The method involves inserting a filter element into a valve stem passage of the valve assembly while the valve assembly is connected to the wheel assembly, and then installing a sealing valve in the valve stem passage. The invention also relates to a tool for inserting the filter element into the valve assembly to inhibit particulate material from passing into the valve assembly while allowing fluid to pass therethrough. The tool comprises a body selectively attachable to the valve assembly. The body has a plurality of passages therein, including a plunger passage, a filter passage and a fluid passage, and a selector valve having two bores therein for selective registry with the plurality of passages.