Automated pressure equalization above and below completion plug of gate valve cartridge or a completion plug of a line stop fitting
US10718458B2 · kind B2 · utility
1Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2018 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | May 25, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve cartridge, valve housing and installation assembly as well as a completion plug for a line stop fitting and installation assembly. The gate valve cartridge comprises a gate, a paddle, a threaded valve stem and a completion plug. Both completion plugs include an outer circumferential slot for accommodating a circumferential seal and both completion plugs also accommodate a normally-closed check valve. The check valves have an open distal end for receiving a check valve actuator and an open proximal end in communication with fluid disposed proximally of the circumferential seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.