Our EasyVac 9 CFM vacuum pumps are now 110V/220V 50/60Hz switchable and ETL and CE certified. Ai EV9 are dual-stage high speed sliding-vane rotary compact vacuum pump with KF25 vacuum connector. Comes with all necessary fittings and a exhaust oil mist filter which also returns trapped pump oil back to the pump and makes the pump quieter to run. It is important to note that pumps should always be ran in a well ventilated area.