Driven by pistons without need of lubricant, regular oil changes, or maintenance, Rocker 430 does not produce any oil mist exhaust. Prote™ filter cartridge prevents liquid entry and prolongs pump service life, while thermal protection device shuts off pump automatically when overheated and enables work to resume when temperature cools down. Equipped with 1/6 hp motor, pump provides 34 Lpm (110 V) and 28 Lpm (220 V) max power, 80 psi max pressure, and -630 mm Hg max vacuum.