Often, continuous duty requirements can best be supplied using a mechanical vacuum pump.Ĭonsider the vacuum educator pictured in the photograph in Figure 1. Is it a continuous requirement or intermittant. This is not the fault of the generator, but reflects on the inefficiency of compressed air.ĭue to the high cost of compressed air, it is wise to always assess your vacuum generators for cost. It is also very energy intensive like most compressed air powered devices, a vacuum venturi consumes about 10 times the power of a mechanical vacuum pump for the same flow rating. The process in its simplest form uses no moving parts, so it is very reliable. Vacuum eductors, sometimes called ejectors, or venturi use a flow of compress through a specialized nozzle to create vacuum without a mechanical vacuum pump. It seems bizarre, but it is possible to make vacuum with compressed air. Continuous compressed air generated vacuum can be expensive compared to electric driven sources.
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