Tank mounted Vacuum pump Airtech L-21-G1. This pump needs repair because the previous customer neglected to change the oil. This unit comes with an extra identical pump L21 that also needs repair. This is a single phase pump with a single phase electrical box. This is designed to pump to a certain vacuum and then shut off, the electrical box is tied in with an adjustable vacuum switch. Pump restarts when vacuum is low. Having the tank allows the user to run a smaller pump. VAC Pump Consulting Inc. Specializes in a wide range of Vacuum pump services such as.. Vacuum pump sales and exchanges. On site preventative maintenance programs. Custom wet pump exhaust filters. The item “Tank mounted Vacuum pump Airtech L-21-G1 VPC SALES” is in sale since Friday, April 22, 2016. This item is in the category “Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Air Compressors & Blowers\Other Air Compressors”. The seller is “vpcinc” and is located in Pleasanton, California. This item can be shipped to United States.