Excess flow valves
US8776826B2 · kind B2 · utility
2Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2009 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Apr 16, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8803
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An excess flow valve (EFV) for installation in a service line of natural gas distribution system serving an existing structure. The EFV has a cylindrical housing having a first length and a second length and a through hole therethrough for passage of gas. The EFV 11 engaged in the through hole of the first length and the second length has an expandable wall which can be expanded and fixed in said service line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.