Gate valve for two way flow
US4679770A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Feb 10, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/0281
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve for pulp stock slurries and the like has a smooth flow passage for two way flow and has no grooves or cavities where pulp stock fibres or other particles collect. The valve comprises a rigid valve body having a flow passage with smooth curved walls therethrough, the body having a gate blade slot in the approximate center of the flow passage, a flexible resilient seat flush with the smooth curved walls, the seat being in the form of a strip extending through one end of the gate blade slot, around the flow passage and through the other end of the gate blade slot, the strip held in place by a body port insert ring attached and sealed to the valve body, and a gate blade with a semi-circular end, the gate blade adapted to fit in the gate blade slot to seal against the resilient seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.