Gate valve arrangement including multi-valve stem and seat assemblies
US9759334B2 · kind B2 · utility
5Cited by
25References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2013 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Jul 2, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/0245
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve for use in oil field applications and including a stem seal assembly and a seat seal assembly. Each of the stem and seat seal assemblies accommodate independent primary, secondary, and tertiary seals for sealing the space between the stem and the bonnet, or the seat ring and the valve body, respectively. The provision of multiple seals in each assembly provides redundancy that allows for maintenance of the seal between the components even if one or two of the individual seals fail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.