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The Welch Vacuum 2567B-50 two-head WOB-L-style piston pump has a 100 liter per minute (LPM) free air displacement with vacuum to 60 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.Manufacturer SpecificationMax Pressure: 60(80)Air Displacement: 4.9/3.5 50/60 HzMotor Power: 1/3(250) WattsTubing Needed: 1/4(7)Intake Thread NPT: 1/4Additional Prep Fees May Apply