Adjustable valve
US10429860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2018 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Feb 9, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7791
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An adjustable differential pressure control valve has a first housing part with one or more fluid entry openings and one or more fluid exit openings. The valve is provided with a movable throttle member configured for regulating the through flow area of the exit openings in response to a difference in pressure across the throttle member, and a spring arrangement configured for providing a spring force acting on the throttle member in a direction that increases the through flow area of the exit openings. The spring arrangement comprises at least a first and a second spring, and the spring arrangement is adjustable to operate in a low pressure mode with the spring force acting on the throttle member being provided by the first spring only, and to operate in a high pressure mode with the spring force acting on the throttle member being provided by at least both the first and second springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.