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"Expect many enjoyable experiences!" David M. Armstrong
Did you know: David Armstrong has written four books on corporate storytelling.
Flow Indicators
Flow indicators are designed to monitor gas, air, oil, water and other liquids at both maximum and minimum flow rates. The action is simple and highly visible. Flow through the unit makes the white ball oscillate in the dome. If the flow stops, the ball drops out of sight. The movement of the ball cannot be missed, even in poorly lighted areas and at significant distances. With only one moving part—the ball—there is virtually nothing to go wrong.
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