a booster pump, or with both a booster and secondary ("high vacuum") pump, typically a diffusion style. a rotary vane pump can also be used alone when high vacuum is not required and slower pump-down is acceptable. two-stage designs are available, which utilize two rotors in series internal to the pump...
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catalog brands about us contact us elco home elco elco industrie automation gmbh we are the german subsidiary of an international company with locations in oberstenfeld near stuttgart and dresden. our sister company elco (tianjin) electroncis co. ltd. is a chinese company headquartered in tianjin, china...