Gas lift valve
A gas-lift valve consists of a hollow valve body having an outlet passageway and having an inlet port. An annular valve seat is located in the body between the inlet port and the outlet passageway, the valve seat having a flow area larger than the cross-sectional area of the inlet port. A valve member in the body is movable between a closed position, wherein the valve member engages the seat, and an open position, wherein the valve member is out of engagement with the seat. Pressure responsive means in the body connected with the valve member toward the seat, the pressure responsive means being exposed to fluid pressure through the inlet port when the valve member is in the closed position and exposed to fluid pressure in the outlet passageway when the valve member is in the open position. (6 claims)
- Assignee:
- Dresser Industries Inc
- Patent Number(s):
- US 3559671
- OSTI ID:
- 5865261
- Country of Publication:
- United States
- Language:
- English
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