Isolation valve seal
US7357371B2 · kind B2 · utility
1Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2006 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Apr 29, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/0227
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus for sealing an aperture that provides fluid communication between a second and first chamber of a dual chamber orifice fitting. A sealing assembly comprises a closure member that is rotatably moveable between an open and closed position relative to the aperture. A secondary seal is disposed within a recessed portion on a sealing face of the closure member. The recessed portion has a perimeter defined by a shoulder A primary seal is disposed within a groove formed between the shoulder and the secondary seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.