Diaphragm Vacuum Pump diaphragm pump is a perfect match for most applications in the laboratory and functions because it is oil-totally free and whisper silent, and since it requires so little service. Diaphragms have especially long lives and hermetically seal the drive space from the pumping chamber to protect mechanical parts from corrosion. The pumps obtain their distinctively high performance from high pumping chamber volume in accordance with the minimal dead space. Highly flexible dual diaphragms with fabric reinforcement assure an exceptionally long diaphragm life time. The pumps operate completely oil free and do not have any sliding parts in the gas route. In normal procedure they are completely free of abrasion. Besides adding to the long services intervals having less abrasion also eliminates most of the particulate impurities regularly generated within scroll or piston pumps. This makes diaphragm pumps the right choice for clean applications.