No-bleed pilot for pressure regulating valve
US6371156B1 · kind B1 · utility
24Cited by
21References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Aug 10, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7762
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control valve assembly including a no-bleed pilot valve is disclosed. The pilot valve includes a pressure responsive valve adapted to move in connection with a control parameter, such as downstream fluid pressure. The pressure responsive valve selectively connects certain ports with upper and lower chambers of a control valve actuator so that the upstream and downstream fluid pressures may be used to operate the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.