Plug valve having high flow resolution
US7322559B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2005 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Oct 13, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6881
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a valve with high flow resolution within a flow range, which valve comprises a valve housing and a valve plug, whereby the valve plug comprises a cavity and a flow regulating slit which in cooperation with the valve housing forms a flow passage. On the shell surface of the valve plug, when the valve is in a fully open position, there is an area which, relative to the outlet of the valve housing, is situated on the other side of the axis of rotation of the valve plug, which area is free from the cavity. The intersection of the cavity with the shell surface of the valve plug is preferably situated on the one side of the axis of rotation of the valve plug so that the valve plug exhibits a continuous shell surface free from the cavity along at least 180 degrees of the circumference of the valve plug, whereby the flow regulating slit may extend over a substantial portion of the circumference of the valve plug, thereby providing good flow resolution in the flow range in which the flow enters the cavity via the flow regulating slit only.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.