High-temperature bidirectional metal seal
US4231546A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1978 |
| Grant date | Nov 4, 1980 |
| Priority date | — |
| Expiry date | Dec 22, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2266
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed herein are valve seals wherein an annular metallic seal member is retained in an annular recess in a valve body wall, the seal member being resiliently deformable in both axial and radial directions. A resilient annular Belleville spring portion is provided linking an inner sealing portion and an outer flange portion which is sealingly engaged by the valve body. When a valve employing this seal arrangement is closed, differential pressure acting from either direction urges a valve closure member and the seal member in a downstream direction, and forces the seal member and the valve closure member into tighter sealing engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.