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Water Flow Switch, PDT R3/4 Liquid Water Oil Sensor Control Automatic Paddle Type Flow Switch 15A 250V IP54, HFS-20 Target Flow Controller, Controls Flow in Pipes : Amazon.fr: Bricolage
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Gems Sensors Paddle Type Flow Switches | FS-550 & FS-550E for sale from Control Components - IndustrySearch Australia
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SPDT Thread Paddle Type R3/4 Liquid Water Oil Flow Sensor Switch Automatic Control 15A 250V HFS-20: Amazon.com: Industrial & Scientific
![Series FS-2 | Vane Flow Switch is an economical flow proving solution. Adjustable to fit one to eight inch pipes. Applications include hot water heaters, chillers, machinery, cooling lines, and boiler flow Series FS-2 | Vane Flow Switch is an economical flow proving solution. Adjustable to fit one to eight inch pipes. Applications include hot water heaters, chillers, machinery, cooling lines, and boiler flow](http://www.dwyer-inst.com/images/addtl/FS2_600x600.gif)