The HyVac 91142-025 is a single-stage belt-drive pump without base and motor for use in laboratory vacuum systems. The HyVac 28S pump has a 310 liter per minute (LPM) free air displacement and requires a 3/4 HP motor (sold separately). It has a 15/16" outside diameter (OD) intake nipple for connection to the vacuum system. Hyvac Products manufactures high vacuum pumps, gauges and equipment for the vacuum industry. The company, founded in 1990, is headquartered in Pottstown, PA.
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