Vacuum aggregates rotary AWD-50/5, AVD-50/16, AVD-150/25, AVD-150/63 are intended to pump air from the containment vessels, non-corrosive to the working fluid and the materials from which the fire-explosive and non-toxic gases, vapors, vapor mixtures and purified by dropping water and mechanical impurities, with the oxygen content is not more than in air (21% by volume) of from atmospheric pressure to a residual limit.
The aggregates consists of two series-connected pumps NVD and backing pump mounted on a common frame. Pumps are interconnected by piping and a bellows assembly.
The aggregates are not designed for pumping of air, fumes and vapor mixtures from one volume to another. The units are not designed for use in fire-hazardous industries.
The aggregates are the greatest rapidity of action of action in the range of input pressures from 1,3 6.6 to 102 Pa (1 to 5 10-2 mm Hg). Aggregates can also be used as a unit for pre-dilution of high-vacuum pumps.