Through simple design and with only a wave and equipped with a direct drive, robust and durable compressors are created low maintenance and upkeep costs. These vacuum pumps operate completely oil-free; the individual chambers are through long-lived Sliders separated from each other. Most models have integrated intake filters and control valves. These compressors can be combined with other accessories be equipped. The compact cover hood guarantees low noise emissions and low heat emissions. With optional corrosion protection, these compressors are also suitable to extract moist air.