Flow control valve
US11313475B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Dec 24, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B41/38
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flow control valve, includes a valve body component, a valve seat component and a valve core component, wherein the valve seat component includes a sealing ring, a first annular protruding portion and a second annular protruding portion; the valve core component includes a valve core including a lower section portion; when the valve core abuts against the sealing ring; the first annular protruding portion includes a first inner wall portion; the second annular protruding portion includes a first outer wall portion; and when the valve core abuts against the sealing ring, the minimum inner diameter of the first inner wall portion is D1, the maximum outer diameter of the first outer wall portion is D2, the minimum inner diameter of the lower end portion is D3, and the maximum outer diameter of the lower end portion is D4, then D3−D2<2 mm, and D1−D4<2 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.