Felisa vacuum pumps are the industry standard for high performance and reliable continuous operation. These pumps are available in sizes ranging from 21 liters per minute through 2,800 liters per minute in either single or two stage configurations. Some or the pumps are motor mounted and the rest are belt driven via electric motors ranging from 1⁄4 H.P. thruogh 7.5 H.P. most operate around the 1,725 r.p.m.