Valve assembly having a pressure balanced segment seal
US7210668B2 · kind B2 · utility
6Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2003 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Jan 4, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K11/0853
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plug valve assembly includes a plug and a segment seal assembly. The segment seal assembly is configured to reduce the differential pressure load across the segment seal assembly when the valve is closed. The segment seal includes an opening in fluid communication with a sealed vent region that is formed between the segment seal and the plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.