Gate valves for installation in pressurized pipes
US9644779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2014 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Jul 3, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/613
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve assembly is disclosed that may be installed in a pressurized pipe or conduit. The gate valve assembly includes a nozzle that is connected perpendicularly to the pipe. The nozzle includes a distal end, a proximal end and a through passage extending therebetween. The through passage includes a proximal portion with a circular cross-sectional profile for sealingly engaging a wiper seal disposed on a valve cartridge. The passage also includes a distal portion with a non-circular cross-sectional profile that complements a non-circular cross-sectional profile of the cartridge. The non-circular cross-sectional profiles of the cartridge and passage prevent the cartridge from twisting or rotating within the nozzle or pipe. The proximal end of the nozzle also features an inner lip, which facilitates the welding of the proximal end of the nozzle to an upper saddle member, which is used to clamp the nozzle to the pipe prior to cutting or pressure tapping of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.