Graphite/metal valve seal assembly for high temperature control valves
US9360128B2 · kind B2 · utility
1Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Mar 13, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/243
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sliding stem control valve includes a valve body, a seat ring located within the valve body and a valve plug slidably mounted within the valve body, the valve plug and the valve seat cooperating to control fluid flow through the control valve. A seal assembly is located between the valve plug and the valve seat, the seal assembly including a metal/graphite seal ring located between a first backup ring and a second backup ring. A biasing element is located adjacent the second backup ring and a retainer ring is located adjacent the biasing element to maintain the biasing element adjacent the second backup ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.