The Welch Vacuum 2581C-50 two-head WOB-L-style piston pump has an 83 liter per minute (LPM) free air displacement with vacuum to 5 Torr and is suitable for use with gel dryers, concentrators, and rotary evaporators in non-corrosive environments. The vacuum/pressure pump has an intake catch jar for collecting condensation, a gauge, and a manually adjustable vacuum level. It is driven by a 1/3 HP motor that accepts 230V, 50Hz input power and has an International Electrotechnical Commission (IEC) power cord with a Schuko plug. It connects to 1/4" inside diameter vacuum system tubing (sold separately).Welch-Ilmvac, a subdivision of Denver Gardner, manufactures vacuum pumps, systems, and components for industrial and research applications under the Welch and Ilmvac brand names. Denver Gardner, founded in 1859, is headquartered in Milwaukee, WI.
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