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.
Claims21
1-20. (canceled)
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.
The valve plug of claim 1, wherein the annular groove is configured to receive the molded disk, and the fastener couples the valve plug to the mounting portion without any retainer.
The valve plug of claim 1, wherein the molded disk comprises a nitrile material at least in part, and the valve plug comprises a metal material.
The valve plug of claim 1, further comprising a body in which the two or more bores are disposed, wherein at least one bore of the two or more bores includes a first end configured to contact the mounting member, and a second end disposed within the body of 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.
The valve plug assembly of claim 10, wherein the separable disk comprises a polyurethane material at least in part, the molded disk comprises a nitrile material at least in part, and the valve plug comprises a metal material.
The valve plug assembly of claim 10, wherein the disk comprises the separable disk, and a gasket is disposed within a portion of the annular groove.
The valve plug assembly of claim 10, the valve plug further comprising a body and an annular flange extending from the body, the annular flange including a top surface adapted to contact the mounting member and a bottom surface, the groove extending into the bottom surface of the annular flange.
Dependencies are inferred from the claim text.