G1-711-021 is a tube-type centrifugal vacuum pump manufactured by the Danaher Corporation. The pump features a single double-sided impeller with a wide open space to provide high vacuum capabilities. It is designed to provide minimum vibration, maximum efficiency, and energy savings. The efficiency of this pump can reach up to 90%, and is often used in industrial processes such as dust collection, vacuum tight filtration, and a variety of other industrial applications. It is available in 1.5, two, three, and four horsepower models, with various installation options and optional accessories. The G1-711-021 is a reliable and cost-effective option for industrial applications.