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 adapted for sealing engagement with a seat ring, the valve plug comprising:
- a cylindrical body and an annular flange radially extending from the body, the annular flange having a groove;
- a pair of bores disposed in the body, each bore having a first diameter, a first end adapted to be in contact with a mounting portion, and a second end disposed within the body, each bore adapted to receive a fastener to couple the valve plug to the mounting portion;
- a recess disposed at the second end of each bore, each recess having a second diameter larger than the first diameter of the bore to form a stepped portion at the second end of each bore, the recess adapted to receive at least one of a portion of a retainer or a portion of the fastener;
- and
- a sealing disk disposed within the groove of the annular flange, the sealing disk one of a machined sealing disk machined into the groove or a molded sealing disk molded to the groove, the sealing disk having a sealing surface adapted to engage a seating surface of the seat ring,
- wherein, when the sealing disk is the machined sealing disk, the recess disposed at the second end of each bore disposed in the body receives a portion of a retainer, and when the sealing disk is the molded sealing disk, the recess receives only a portion of the fastener, such that the same valve plug and one or more fasteners are interchangeably used with both the machined sealing disk and the molded sealing disk.
A fluid control device, comprising:
- a valve body defining a flow path for a fluid;
- a seat ring disposed within the flow path;
- and
- an actuator coupled to the valve body including a control assembly adapted for displacement relative to the seat ring for regulating a flow of the fluid through the flow-path, the control assembly including a mounting portion and a valve plug coupled to the mounting portion and adapted to sealingly engage the seat ring, the valve plug comprising:
- a cylindrical body and an annular flange radially extending from the cylindrical body, the annular flange having a groove;
- a pair of bores disposed in the cylindrical body, each bore having a first diameter, a first end in contact with the mounting portion, and a second end disposed within the cylindrical body, each bore adapted to receive a fastener to couple the valve plug to the mounting portion;
- a recess disposed at the second end of each bore disposed in the cylindrical body, each recess having a second diameter larger than the first diameter of the bore to form a stepped portion at the second end of each bore, the recess adapted to receive at least one of a portion of a retainer or a portion of the fastener;
- and
- a sealing disk disposed within the groove of the annular flange, the sealing disk one of a machined sealing disk machined into the groove or a molded sealing disk molded to the groove, the sealing disk having a sealing surface adapted to engage a seating surface of the seat ring.
Dependencies are inferred from the claim text.