Insert retainer for a wafer style butterfly valve
US4575048A · kind A · utility
8Cited by
23References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Jun 15, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/60
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A wafer style butterfly valve has a valve body including a through opening with a cylindrical wall coaxially surrounding an end portion of the fluid passage. The insert is retained within the valve body by one or more resilient wire forms held in an annular channel defined by facing annular grooves in the valve body wall and the insert peripheral wall. The wire forms have circular sections while the insert groove has a semi-circular section, thereby providing a self-centering and self-locking effect. A tapered wall at one end of the insert provides expansion for the wire form during insertion of the insert into the valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.