Valve Plug Assembly With Universal Sealing Disk Mounting
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Solution Overview
Problem
Existing valve plug assemblies for fluid control devices require different retainers and fasteners for machined and molded sealing disks, complicating servicing and necessitating additional components like o-rings, which increases complexity and part requirements.
Innovation Solution
A valve plug design with a cylindrical body and annular flange featuring bores with recesses that accommodate either a retainer or fastener, allowing interchangeability with both machined and molded sealing disks, reducing the number of parts needed for installation and service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different retainers and fasteners are used for machined and molded sealing disks, then each sealing disk type can be securely mounted, but the device complexity increases and servicing becomes more complicated
Solution Approach 1:
The valve plug body is designed with a universal mounting structure featuring a recess that can accommodate both machined sealing disks and molded sealing disks using the same retainer and fastener configuration. This universal design eliminates the need for different retainers and fasteners for different sealing disk types, reducing device complexity while maintaining secure mounting for both disk types.
2Reliability
If additional o-rings or sealing mechanisms are required for machined sealing disks, then sealing reliability is improved, but the quantity of parts increases and installation complexity rises
Solution Approach 1:
The mounting structure integrates the sealing function directly into the valve plug body and retainer assembly. The recess in the valve plug body and corresponding features on the retainer create an integrated sealing system that eliminates the need for separate additional o-rings or sealing mechanisms, reducing part quantity while maintaining sealing reliability.
Data Source
AI summary
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.