Elmo Rietschle once through oil lubricated rotary vane vacuum pump with 5 HP, 230/460v, 60 Hz, 3-phase TEFC motor. This two-stage, air-cooled pump is ideal for handling a wide range of gases, including those which are extremely wet or aggressive. It features low operating temperatures, shaft seals to protect the bearings from contamination, a fresh oil reservoir, low oil level switch, oil metering pump, oil mist eliminator, waste oil/condensate tank, and a high level shut-down switch for the waste oil/condensate tank. An inlet filter is recommended and sold separately.