Plug valve assembly
US6382591B1 · kind B1 · utility
2Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1996 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Aug 27, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7506
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved plug valve assembly having polymerically encapsulated seats and a machined inner surface is provided. The valve assembly comprises a valve body having an internal chamber, a plug disposed within the internal chamber and seat members supporting and sealing the plug. The seat members comprise a support frame which is completely encapsulated in a polymeric material. The process for encapsulating the seats includes providing a mold having, among other features, pins which position the support frame to provide for even application of the polymeric material to the support frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.