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Diaphragm pumps are commonly used in industrial applications where fluids may contain solids, are abrasive, shear‑sensitive, or chemically aggressive. In many process environments, diaphragm pumps are preferred because they are self‑priming, can run dry without damage and handle a wide range of viscosities.
Most industrial diaphragm pumps are Air‑Operated Double Diaphragm (AODD) pumps, which use compressed air instead of an electric motor to move fluid.

Diaphragm pumps, a type of positive displacement pump, are the workhorses of industrial fluid transfer because they handle conditions that destroy other pump types. Common applications include:
Chemical transfer of acids, caustics and solvents, with PTFE or polypropylene diaphragms matched to fluid compatibility
Wastewater and sludge handling, including produced water in oil & gas and effluent in municipal systems
Abrasive slurry transfer where centrifugal pumps would erode quickly
Hygienic and sanitary processes in food, beverage and pharmaceutical production
Drum and tote unloading where suction lift and dry-run capability matter
Hazardous-environment fluid transfer where electric pumps create ignition risk
PSG® Store carries diaphragm pumps from two PSG®-family brands. Wilden® invented the AODD pump in 1955 and remains the industry reference for high-performance air-operated pumps in demanding applications. All-Flo™ offers reliable AODD pumps with fast availability for general industrial use. Both brands ship from PSG® Store with manufacturer warranty and access to genuine diaphragm pump parts.
Use the filters above to narrow by brand, material and port size, or use the pump finder to go step-by-step and find the right pump for you. In-stock pumps ship same-day; non-stocked configurations ship direct from the manufacturer with PSG® Store handling the order, support and warranty.
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