Robinair's 15800 VacuMaster Economy Vacuum Pump is a high performance, heavy duty 2-Stage rotary vane design vacuum pump designed for commercial refrigeration use. With an 8 CFM free air displacement, factory rating to 40 microns, and 18.6 ounce oil reservoir, this unit has the capacity you need to get the job done. This robust unit features a 1 HP, 115V, 60 Hz thermally protected motor; an inlet fitting engineered for maximum airflow while preventing oil backflow; finned aluminum surfaces that dissipate heat faster (keeping pump cooler and extending life); 1/4" & 3/8" MFL inlet fittings; easy to read sight glass; easy access oil fill port; oil drain valve positioned at the bottom of the oil reservoir and angled for faster, more complete draining, and non-skid feet. Oil included. Robinair, a Bosch Automotive Service Solutions brand, is a global leader in service tools and equipment based in Owatonna, Minnesota. Robinair is recognized throughout the world as the quality and performance leader in AC/R evacuation tools and this position has led to its success with the full range of products that serve the heating/ventilating/air conditioning/refrigeration (HVAC-R) and mobile markets, which includes the automotive aftermarket along with other industries such as agriculture and construction.