Rotary valve
US4118008A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1976 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Oct 22, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K5/204
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An eccentrically rotatable control valve has a seat ring containing two seating surfaces and a stationary sealing ring mounted on an inner wall of a valve chamber to form a port therein. Rolling movement of an eccentrically mounted plug of the valve from a partial to full line fluid tight sealing contact with one of the seating surfaces of the seat ring causes the seat ring to be simultaneously moved in a rocking manner and the other seating surface of the seat ring to be moved into fluid tight sealing engagement with the stationary sealing ring. The rockable seat ring construction provides a means by which the plug and its associated seat ring can center itself in a properly seated fluid tight position on the sealing ring in the event that the sealing ring is out of properly aligned seating surface engagement with the plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.