Valve plug assembly for pressure regulator
AssigneeEmerson Process Management Regulator Technologies, Inc.
InventorsChun Lin, Roy R. Pelfrey
Life of this patent
Estimating the term…
Abstract
A valve plug adapted for sealing engagement with a seat ring. The valve plug includes a cylindrical body with an annular flange having a groove. A pair of bores is disposed in the body, each bore having a first diameter, a first end, and a second end disposed within the body. Each bore is also adapted to receive a fastener to couple the valve plug to a mounting portion, and a recess is disposed at the second end of the bore, forming a stepped portion. The recess is adapted to receive at least one of a portion of a retainer or a portion of the fastener. A sealing disk is disposed within the groove of the annular flange and is one of a machined sealing disk or a molded sealing disk.
Claims20
A valve plug, comprising:
- two or more bores that are each configured to receive a first portion of a fastener to facilitate attachment of the valve plug to a mounting member;
- a recessed portion that is adjacent to each of the bores;
- and
- an annular groove that is configured to receive one of:
- a molded disk that is molded into the groove;
- and
- a separable disk that is insertable into the groove;
- wherein the recessed portion is configured to receive a portion of a retainer that is attachable to the valve plug to maintain the separable disk in the groove, and
- wherein the recessed portion is further configured to receive a second portion of the fastener when no retainer is attached to the valve plug.
A valve plug assembly, comprising:
- a valve plug comprising:
- two or more plug apertures;
- an annular groove;
- and
- a recessed portion that is adjacent to each plug aperture;
- a disk that is configured to be positioned in the annular groove, wherein the disk is one of:
- a molded disk that is integrally molded into the annular groove;
- and
- a separable disk that is insertable into the annular groove and configured to be retained within the annular groove by a retainer having a portion that is receivable in the recessed portion of the valve plug;
- and
- two or more fasteners that are insertable into the plug apertures to affix the valve plug to a mounting member, wherein a head of each fastener is receivable within the recessed portion of the valve plug when no retainer is coupled to the valve plug.
Dependencies are inferred from the claim text.