Air Operated Double Diaphragm Pump | AODD Pump for Corrosive & Solid-Laden Fluid Transfer

Working Principle After compressed air enters the air distribution valve of the pump, it alternately drives two diaphragms inside the pump chamber to reciprocate. The volume of the pump chamber on one side of the diaphragm expands and shrinks periodically. When the pump chamber volume increases, negative pressure is formed, the inlet ball valve opens and materials are sucked into the chamber. When the pump chamber volume shrinks, the medium is pressurized, the discharge ball valve opens and materials are pushed out. The two diaphragms alternately complete suction and discharge to realize continuous medium transfer. Powered by air pressure, it can run dry and has strong self-priming capacity. Without an electric motor, it generates no electric spark and is naturally suitable for explosion-proof working conditions. Application Fields Chemical Industry: Transportation of corrosive acid & alkali solutions, chemical solvents, high-viscosity chemical slurries, transfer of flammable and explosive chemical media. Environmental & Wastewater Treatment: Delivery of sewage sludge, impurity-containing wastewater and flocculants, liquid suction in sewage tanks. Coating & Ink Industry: Transfer of paint, ink, resin and other high-viscosity materials, pigment slurry feeding. Food & Pharmaceutical Industry: Conveying of syrup, pasty food raw materials and pharmaceutical suspension liquid. Mining & Ceramic Industry: Transportation of mineral slurry, ceramic mud and solid particle laden slurry. General Industry: Waste liquid recovery, oil delivery, transfer of flammable, explosive and toxic hazardous fluids.