Sealing assembly for valve member
US5170989A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1992 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Feb 3, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K5/0668
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seat assembly (28) for a valve member (20) includes a seat carrier (40) defining a pocket to receive a rigid seat ring (42). The outer peripheral surface (56) of the rigid seat ring (42) is spaced radially from the inner peripheral surface (45) of the seat carrier (40) to define a radial clearance therebetween of at least around 0.001 inch per inch of flow passage diameter. The sealing surface (58) of the seat ring (42) extends at 45 degrees to the longitudinal axis of the flow passage and the flexing and expansion of rigid seat ring (42) when the valve member (20) is moved to closed position permit the seat ring (42) to conform to irregularities in the adjacent mating sealing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.