Device for the regulation of flow applied to flow valves working under pressure differential
US7121522B2 · kind B2 · utility
0Cited by
11References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jan 30, 2004 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Mar 15, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/3855
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device for regulating flow comprises a main valve operating under differential pressure wherein the main valve has a main flow inlet and a main flow outlet. The main flow inlet is equipped with a valve seat over which a main shutter is adjusted in a perpendicular direction to its shuttering plane. The main shutter has a hole on its locking face communicating with a pressure chamber disposed above the main shutter. A secondary control valve regulates small flows through the hole so as to create greater or less pressure within the pressure chamber to close or open the main shutter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.