Profile: Gardner Denver Welch Vacuum Technology is a producer of compressors, vacuum pumps, and related equipment. Our product line includes laboratory vacuum pumps and liquid pumps, air conditioning refrigeration & pump services, industrial pumps, oil-free vacuum pumps & accessories. We provide industrial pump such as rugged high capacity pumps, Duoseal & dry rotatory vane pumps. Our vacuum accessories such as exhaust filters, hose and connectors, traps, gauges & controllers. Our brands include Duoseal® and Welch®.