Stem seal cartridge for valve
AssigneeMueller International, LLC
InventorsSean Michael Allen, Paul S. Gifford, Alexander Michael Jenkins
Life of this patent
Estimating the term…
Abstract
A stem sealing device for a valve can include a device body defining an annular shape; a stem seal defining an annular shape and configured to seal a gap between a valve stem of the valve and a valve body of the valve and positioned within the device body, the stem sealing device installable in and removable from the valve as an assembly without prior or subsequent removal of the stem seal; and a fastener configured to secure the device body to the valve body.
Claims44
A valve comprising:
- a valve body;
- a valve member positioned inside the valve body and configured to selectively open and close the valve upon rotation of the valve member;
- a valve stem extending from the valve body, at least a portion of the valve stem coupled to the valve member, separable from the valve member, and movable with respect to the valve member during removal or installation to create a gap between the valve stem and the valve member;
- a stem sealing device secured to the valve body and encircling the valve stem, the stem sealing device defining an annular shape and configured to seal a gap between the valve stem and the valve body;
- and
- a valve riser secured to the valve body and allowing access to the stem sealing device and replacement of the stem sealing device without displacement of the valve riser or an actuator secured thereto and without cutting of a seal stem of the stem sealing device, the actuator configured to rotate the valve member.
A stem sealing device for a valve, the stem sealing device comprising:
- a device body defining an annular shape;
- a stem seal defining an annular shape and configured to seal a gap between a valve stem of the valve and a valve body of the valve and positioned within the device body, the stem sealing device installable in and removable from the valve as an assembly without prior or subsequent removal of the stem seal;
- and
- a fastener configured to secure the device body to the valve body.
A method of replacing a stem seal of a valve, the method comprising:
- removing at least a portion of a valve stem of the valve;
- and
- removing a stem sealing device of the valve;
- the stem sealing device comprising
- a device body defining an annular shape;
- a stem seal defining an annular shape and configured to seal a gap between a valve stem of the valve and a valve body of the valve and positioned within the device body, the stem sealing device installable in and removable from the valve without prior or subsequent removal of the stem seal;
- and
- a fastener securing the device body to the valve body.
Dependencies are inferred from the claim text.