Hydraulic fill valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 10, 1981
Grant Date -
N/A
app pub date -
Oct 9, 1979
filing date -
Oct 9, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved method and apparatus for injecting hydraulic test fluid into a length of pipe is disclosed. Test fluid under low hydraulic pressure axially displaces a cylindrical fill valve against a retaining force. The test fluid fills the pipe through discharge ports in the side of the fill valve. The retaining force retracts the fill valve and closes the discharge ports when the pipe is full. A conduit through the fill valve then supplies high pressure hydraulic fluid for testing the internal strength of the pipe.
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