Simple paddle-wheel device provides visual flow indication
The Kobold DAF is a paddle wheel flow indicator for liquids, and is recommended whenever visual flow indication (without flow measurement) is required. The simple design uses a rectangular housing with two transparent windows containing a paddle wheel that is set in motion by the flowing media. The rotating paddle wheel provides visual indication of flow. Flow ranges are varied by changing the inlet port orifice, allowing the same housing to be used for many flow ranges. It can be installed in any position, as long as the flow remains in the direction of the arrow, says the company. Connections are available in 1/8-in. NPT, with many choices of materials for media compatability. This device can be rotated along its long axis, even during operation, thanks to rotatable fittings, thereby allowing the windows to be easily viewed by operators. — Kobold USA, Pittsburgh, Pa.