Dry Vacuum Pumps
Dry vacuum pumps are positive displacement pumps that operate without fluids, such as steam or water, eliminating environmental concerns and the cost of contaminant disposal. Dry vacuum pumps, which can be configured to operate either hot or cool depending on the application, reduce emissions and ease solvent recovery. Because dry vacuum pumps do not require oil or fluid checks, maintenance and ownership costs are kept low.
The three main designs of dry vacuum pumps include rotary lobe, helical screw, and claw. Each type uses synchronized non-contacting rotors that are sealed off from the pumping compartment by mechanical seals.
Dry vacuum pumps are often used for laboratory applications like vacuum degassing, vacuum drying chambers, vacuum impregnation, vacuum filtration, rotary evaporators, distillation, and gel dryers. Other applications include forming, crystallization, chemical and pharmaceutical processing, dry etching, solvent recovery, sputtering and vapor recovery.