High-pressure plug valve
US7204474B2 · kind B2 · utility
26Cited by
19References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2004 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Sep 6, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6058
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plug valve has a valve body, a cage fitted within the valve body and a rotatable plug housed within a cylindrical cavity in the cage, for controlling fluid flow through the valve. The cage has first and second opposed flat side surfaces, each side surface has a port for receiving a replaceable flow-path insert in a fluid-tight seal. In one embodiment, the plug also includes at least one inset seal for sealing the at least one of the ports when the plug is in a closed position to inhibit leakage through the valve at low fluid pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.