Ball valve having multiple moveable seats
US8720855B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2012 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Sep 19, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49409
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Embodiments and methods are disclosed herein that relate to a valve assembly. The valve assembly includes a housing having a passage formed therethrough, and a valve ball having a through hole and disposed in the housing, in which the valve ball is rotatable between an open position that has the through hole aligned with the passage and a closed position that has the through hole misaligned with the passage. The valve assembly further includes a first seat having a first sealing surface and disposed in the housing adjacent to the valve ball, and a second seat having a second sealing surface and disposed in the housing adjacent to the first seat such that the first sealing surface of the first seat is disposed adjacent to the second sealing surface of the second seat. At least one of the first sealing surface of the first seat and the second sealing surface of the second seat comprises an arcuate surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.