Additive injection valve
US4281935A · kind A · utility
14Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1980 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Jan 25, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87676
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A valve for adding ingredients to or sampling the fluid flowing through the valve includes an adjustable solid stem which can be extended through the flow path of a pipeline to form a seal with a seat positioned directly opposite the stem. An injection nozzle is fitted into the seat to permit addition of ingredients or sampling of the fluid when the stem is retracted from the seat. When the stem is seated, flow still occurs in the flow path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.