In-line valve for insertion in a pressurized fluid flow line
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United States of America Patent
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Jan 16, 1996
Grant Date -
N/A
app pub date -
Apr 27, 1995
filing date -
Apr 27, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A valve adapted for insertion in a pressurized fluid flow line for blocking and sealing the flow of fluid through the line without disconnecting the line and to maintain the pressure in the upstream end of the line. The valve includes two body portions which may be clamped on the fluid flow line to form a valve body in which is adjustably mounted an elongated tubular outer shaft, and an elongated cylindrical inner shaft that is rotatably mounted through the tubular outer shaft and carries an annular hole cutter and a tubular seal. The inner shaft is rotatable for driving the annular hole cutter through the line and the outer shaft is rotatable for advancing the inner shaft and annular hole cutter and for positioning the tubular seal in the hole cut through the line to block and seal flow through the downstream portion of the line.
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