... Low weight and low noise Direct-drive Support vacuum dryer Small Rotary-vane Vacuum Pump, Direct-drive Application:This series of pumps are ... forepump, process pump or titanium pump of booster pump, diffusion pump, and molecular pump. The pumps are also used in making electrical vacuum cases, vacuum jointing, ... scientific research facilities in many fields. Small Rotary-vane Vacuum Pump, Direct-drive