Full bore bypass valve
This full-bore bypass valve has means for assuring that pressures are equalized across its effective port seals as the valve is being closed, to minimize the premature failure of these seals. The valve has inner and outer telescoping members and means within the valve to effect an initial port closure as the valve is being closed that is sufficient to at least substantially block or retard fluid communication through the valve before its ports are fully closed. Thus, as the bypass valve is being moved to its fully closed position, the pressure across the effective valve port seals will be equalized to prevent the seals from being extruded from their grooves as the valve members move to their respective port-closing positions. (10 claims)
- Assignee:
- Schlumberger Technol Corp.
- Patent Number(s):
- US 3363696
- OSTI ID:
- 6079942
- Country of Publication:
- United States
- Language:
- English
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