Butterfly valve
US4398696A · kind A · utility
9Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1981 |
| Grant date | Aug 16, 1983 |
| Priority date | — |
| Expiry date | Oct 30, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2263
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
This invention concerns a butterfly valve having a resilient, adjustable seat for pivoting disc. The seat comprises an elastomeric seating attached to a clamping ring which slides along the walls of the first portion of the flow passage extending through the body. A plurality of actuators extend through the clamping ring and seat ring into an axial annular wall to initially compress the seat ring. The flow passage is configured so that the axial wall of the clamping ring is uniformly exposed to the fluid pressure in the first passage portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.