Valve assembly
US11339877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2019 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | May 28, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K39/022
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve assembly, comprising a first fluid port, a second fluid port, a valve seat comprising an inner valve seat and an outer valve seat, and a moveable plunger, being moveable between a closed position and an open position arranged to simultaneously seal the inner valve seat and the outer valve seat when in the closed position. A first fluid pathway passes via the inner valve seat, and a second fluid pathway passes via the outer valve seat between the first and second fluid ports when the movable plunger is in the open position. At least one fluid flow path is provided through the body of the moveable plunger. The cross-sectional area of the flow path through the moveable plunger is at least half of the cylindrical cross-sectional area of the gap between the plunger and the respective inner or outer valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.