Plug valve
US6892748B2 · kind B2 · utility
5Cited by
9References
14Claims
0Family size
Inventors
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Aug 12, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7043
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shield for a plug valve is provided to prevent debris from hindering the movement of moving components of the plug valve. The shield prevents larger sized debris from accumulating at an opening in a wall in which the plug valve is mounted, the wall defining a confined space, such as the interior of a vessel, at least in part. The shield encloses but is spaced from the plug valve and a device is located within a space between the shield and the plug valve for directing a purging gas through the space to sweep away or purge smaller sized debris from the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.