Gas lift valve with mixed bellows and floating constant volume fluid chamber
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United States of America Patent
Stats
-
Mar 28, 2017
Grant Date -
Mar 20, 2014
app pub date -
Sep 9, 2013
filing date -
Sep 14, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A valve apparatus capable of withstanding high pressures and techniques for using this apparatus in various suitable applications are provided. The valve apparatus typically includes both an upper bellows comprising a standard, convoluted bellows and a lower bellows comprising an edge-welded bellows. The valve apparatus may also include a floating, constant volume fluid chamber that travels with the lower edge-welded bellows as the lower bellows compresses and expands in an effort to protect the lower bellows from very high internal volume fluid pressure.
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Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F16K Class
- 31.02 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 28, 2028 |
