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GF Signet P51530-P0 Type 515 Rotor-X Standard Mount Paddlewheel Flow Sensor, Polypropylene Body, Black PVDF Rotor, Titanium Pin, 0.5" to 4", 8": Amazon.com: Industrial & Scientific
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GF Signet 3-2551-P0-41 The 2551 Magmeter Flow Sensor, Polypropylene Body, 316SS Electrodes, Display, Frequency/S3L Output, Use with 8900 or 9900, 0.5" to 4", 11": Amazon.com: Industrial & Scientific
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