Oil-Free Alternatives
Replace oil-sealed vacuum pumps and water jet aspirators with oil-free screw and diaphragm pumps
Consider using screw pumps, which are low-maintenance and do not require oil. They use two contact-free spindles for gas transport in gap-sealed chambers. Diaphragm pumps are another oil-free solution that create a vacuum using inlet and discharge valves that work together with a flexible diaphragm. Also, consider using pumps with an exhaust vapor condenser, which can condense and collect waste vapors at the pump’s outlet, facilitating solvent recovery and recycling.
Energy Efficiency
To reduce energy usage, consider using demand-responsive pumps and local vacuum networks. Demand-responsive pumps with a speed-controlled motor can decrease energy usage at a single workstation by up to 90 percent compared to a vacuum pump with constant motor speed. Local vacuum networks, which are more energy-efficient than central vacuum networks, can reduce energy consumption by 70-90 percent and support multiple users from a single pump.
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