Air-Operated Double Diaphragm Pump, PTFE, 2.5 GPM, 1/2 in

Air operated double diaphragm pump delivers controlled, low-pulsation transfer for petroleum, diesel, oil, and other low-viscosity fluids. The polypropylene body and bolted construction help reduce leaks in demanding shop and industrial environments, while PTFE diaphragms support corrosion resistance and long service life. Designed for fast changeover and reliable air performance, it’s built for efficient fluid movement where electric pumps aren’t ideal.

• Delivers up to 2.5 GPM (9.46 L/min) flow for quick transfer of oils, fuels, and process fluids


• Resists wear with dual PTFE diaphragms and a sealed ball-valve design for consistent pumping


• Fits 1/2" inlet/outlet ports plus 1/4" FNPT air inlet for common pneumatic hook-ups


• Supports self-priming up to 10 ft dry / 15 ft wet to reduce start-up time


• Handles up to 80 psi and suspended solids to 3/32" for versatile jobsite use

Built around an externally accessible air distribution system and modular stainless air valve, this pneumatic transfer pump is engineered for smooth changeover and reduced downtime. Use it for waste oil, hydraulic fluid, gasoline, diesel, detergents, alcohol, and more across applications in petroleum, mining, coating, printing, water treatment, and automotive service. If you need a compact, air-driven pump that prioritizes compatibility and dependable performance, grab yours today and keep fluid transfer moving.

• Max flow rate: 2.5 GPM (9.46 L/min)


• Max pressure: 80 psi


• Max head: 226.4 ft (69 m)


• Suction lift: 0–16.4 ft (0–5 m)


• Self-priming: 10 ft (3 m) dry / 15 ft (4.6 m) wet


• Ports: 1/2" (12.7 mm) inlet & outlet


• Air inlet: 1/4" (6.35 mm) FNPT


• Body material: Polypropylene


• Diaphragm material: PTFE


• Ball material: Santoprene®


• Max suspended solids: 3/32" (2.38 mm)


• Temperature range: -20°F to 150°F (-29°C to 66°C)