Yellow Jacket 93590 SUPEREVAC PUMP - 11 CFMIsolation valve for oil changes without losing vacuum in the systemBuilt-in vacuum indicator gaugeWide-mouth oil reservoir port for easier, cleaner filling. The SuperEvac™ vacuum pump is a highly efficient, two-stage rotary vane oil-sealed pump field-rated at 15 microns or better. The lower the micron rating, the better the pump performance.