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About Mechanical Vacuum Pumps and Systems
Mechanical vacuum pumps and systems contain devices such as pistons, claws, scrolling spirals, and diaphragms to isolate and compress air. They are most efficient in the rough and medium vacuum ranges, but lose efficiency at high and ultrahigh vacuum levels. Most mechanical pumps and systems are powered by compressed air; however, a variety of other power sources are also available. DC powered devices use battery power and inputs from power supplies. Common AC single-phase voltages are 115 V (60 Hz) and 230 V (50 Hz). Common AC three-phase voltages are 208 V and 377 V. Engine-powered mechanical vacuum pumps and systems use gasoline or diesel engines. Turbomolecular devices increase vacuum pressure by molecular absorption instead of mechanically moving parts. Magnetic drives use a rotating magnetic field to drive the pump impeller and feature a seal-free construction. Some mechanical vacuum pumps and systems are portable or small enough to sit atop a table or workbench. Others are designed for permanent installations or rest on the floor or atop a skid.
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Engineering Web: Mechanical Vacuum Pumps and Systems - Machine Design
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Sorting out vacuum-pump technology | Machine Design These operations require vacuum pumps. But within the vacuum-pump arena are several options, each creating vacuum by greatly different methods. |
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Most Viewed | Machine Design Liquid pistons pump up the vacuum 3 Vacuum pumps from nash_elmo Industries llc use a |
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Videos | Machine Design Energy-efficient vacuum systems 1 Andy Lovell from PIAB demonstrates losses that plague vacuum systems and how to correct them. |
