Process fluid actuated pilot operated control valve
US9068669B2 · kind B2 · utility
1Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Oct 27, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7761
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flow control system includes a pilot driven valve having a pilot assembly and a main valve assembly; a displacement measurement component coupled to the main valve assembly indicating displacement of the main valve assembly; and a proportional solenoid responsive to a signal from the displacement measurement component that displaces the pilot assembly in proportion to the changes in displacement of the main valve assembly. The valve is controlled by sensing a displacement of the main valve assembly; and modulating the proportional solenoid in response to the displacement of the main valve assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.