| 摘要 |
Air line lubricator with sight dome drip feed, characterized by a metering needle valve, operated by a rotatable control knob having a locking ring which may be moved axially between locked and unlocked positions. When in locked position, it may be secured by a seal wire to prevent tampering with the metering adjustment. Replaceable inserts may be provided to select the size of oil drops which are delivered to an air stream.
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