Air Operated Diaphragm Pumps

Air operated double diaphragm pumps (AODD pumps) are pneumatic positive-displacement pumps that use compressed air, not electricity, to move liquids. With two flexible diaphragms and check valves, they can safely handle aggressive chemicals, viscous fluids, slurries and even liquids with suspended solids, making them a flexible pumping solution for many industries.

Because AODD pumps are sealless and air-driven, they are ideal for hazardous or ATEX-rated areas where electric motors are restricted. The double diaphragm design allows the pump to self-prime, run dry without damage and deliver gentle, low-shear transfer of sensitive liquids. By simply adjusting the air supply, the operator can change the flow rate and discharge pressure, which helps reduce energy waste and gives excellent control over the pumping process.

Air operated double diaphragm pumps are widely used for chemical transfer, tank unloading and dosing in water and wastewater treatment, chemicals and petrochemicals, paints and coatings, mining, construction, food and beverage and general industrial fluid handling. AODD pumps from leading brands such as Fluimac, Sandpiper, Wilden and SEKO are available in a wide range of body and diaphragm materials, including polypropylene, PVDF, aluminium and stainless steel, so they can resist corrosion and abrasion while maintaining long service life.

When selecting an AODD pump, it is important to define the required flow rate and discharge head, the type of liquid (corrosive, abrasive, viscous or containing solids), temperature, suction conditions and whether explosion-proof or sanitary construction is needed. Choosing the right air-operated diaphragm pump for your application ensures safe, leak-free transfer, low maintenance and predictable performance in demanding environments.

Kamadi Pakistan is one of the leading suppliers of air operated double diaphragm pumps in Pakistan, helping customers select industrial AODD pumps for chemical transfer, slurry handling, wastewater treatment and other critical processes with application-based technical support and after-sales service.