Pilot solenoid control valve with integral pressure sensing transducer
US6073652A · kind A · utility
10Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1999 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Apr 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87209
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pilot operated control valve has a main poppet which selectively engages a valve seat to control flow of fluid between an inlet and an outlet. The flow of fluid through a pilot passage in the main poppet is controlled by a pilot poppet that has a pressure balancing stem extending into the pilot passage. The control valve incorporates a compression check valve and/or a reverse flow check valve, in addition to a transducer for sensing the pressure at the outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.