Spacer plates for gate valve seat assemblies
US4179098A · kind A · utility
4Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1978 |
| Grant date | Dec 18, 1979 |
| Priority date | — |
| Expiry date | Sep 28, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/186
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve having a gate assembly of the expanding type employing a gate element (34) and segment (36) with adjacent wedge surfaces to expand the gate mechanism in both open and closed positons. Opposed floating seat skirts (68) having integral seat assemblies (52, 54) are positioned on opposite sides of the expanding gate valve and have facing slots (76) therein to receive spacer plates (82) therein which maintain a predetermined spacing between the skirts to minimize any binding of the skirts against the gate assembly and to provide a predetermined minimum clearance between the skirts at all times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.