Differential gas lift valve
Patent
·
OSTI ID:6017885
A gas lift valve device of the differentially operated type, having a straight, non-tortuous flow passage therethrough, with a hollow valve stem providing a portion of such passage, said device having a floating seat which automatically moves to valve engaging position to check backflow, the area of said seat being larger than the area of a piston on said stem and arranged so that the valve will close at a first predetermined differential pressure and will open at a second predetermined differential pressure which is lower than the first.
- Assignee:
- Otis Engineering Corporation
- Patent Number(s):
- US 4489743
- OSTI ID:
- 6017885
- Country of Publication:
- United States
- Language:
- English
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