Plug valve
US4708161A · kind A · utility
0Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Oct 1, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7036
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tapered plug valve containing a tapered plug surrounded by a sleeve of elastomeric material which deflects upon high fluid pressure applied through the valve inlet port, leakage which might otherwise occur due to such deflection being absorbed by `O` ring seals. The plug may also be urged into the valve body by hydraulic pressure from the inlet port, and this maintains a sealing contact between the elastomeric material and the valve body surrounding the ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.