Valve body for oilfield applications
US5082020A · kind A · utility
35Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7915
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve body for use in cementing, fracturing or acidizing operations in well drilling with improved wear resistance to extend the operating life of the valve. The valve includes a hardened metal valve head having urethane legs replaceably attached to the valve head. A urethane valve insert may also be provided to facilitate sealing engagement with the valve seat. The urethane legs reduce the overall weight of the valve to reduce the mass of the pumping valve against the valve seat thereby extending the life of the valve. The valve legs are attached to the valve head through fitting engagement and can be replaced and/or repaired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.