Diaphragm vacuum pumps are dry-running, oil-free pumps known for their clean operation, chemical resistance, and low maintenance needs. Unlike rotary vane pumps, diaphragm pumps operate using a flexible diaphragm that moves up and down to create a vacuum, eliminating the need for lubricants or sealing fluids. This makes them ideal for applications requiring contamination-free pumping, especially in environments sensitive to oil vapor or particulate contamination.

Key features of diaphragm vacuum pumps include quiet operation, compact size, and high corrosion resistance, particularly when equipped with PTFE-coated diaphragms and chemically resistant wetted parts. These pumps are especially suited for working with aggressive gases, vapors, and solvents, commonly found in chemical, pharmaceutical, and laboratory settings.

Typical applications include filtration, degassing, distillation, drying, and vacuum concentration in labs, as well as use in medical equipment, gas sampling, and environmental analysis. Their ability to operate continuously without oil changes or contamination risk makes them a reliable and eco-friendly choice.

Thanks to their robust design, simple maintenance, and oil-free operation, diaphragm vacuum pumps are widely preferred in fields requiring clean, efficient, and low-vacuum-level performance with minimal servicing.