• Premium Double PTFE Diaphragms: Our air-operated double diaphragm pump adopts PTFE diaphragms, durable, corrosion-proof, and long-lasting. Max. Temperature: 150 ℉/66 ℃; Max. Pressure: 90 psi; Max. Flow Rate：3 GPM; Max Head Lift：196.85 ft/60 m±15%.
• Sturdy & Leak-proof Construction: The diaphragm pump housing is made of stainless steel material, bolted against leakage, sturdy, and corrosion-proof for long-time use.
• Excellent Air-operated Performance: Inlet/Outlet Port Size: 1/2 inch; Air Inlet Size: FNPT 1/4 inch. A high-quality glyd ring, the double-acting sealing, strengthens air performance.
• Unique & Professional Designs: Our double diaphragm pump features an externally available air distribution system. The modular air valve is stainless. This low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes downtime.
• Wide Applications: This diaphragm pump can handle various fluids, such as waste oil, alcohol, hydraulic fluid, gasoline, diesel, detergent, drink, and so on. It is widely used in many industries, such as petroleum, metallurgy, mining, coating, printing, water treatment, and automobile.

Air-Operated Double Diaphragm Pump, 12 GPM, Max 115 PSI With 1/2" Inlet And Outlet, NPT1/4 inch Air Inlet, Corrosion-Proof Stainless Steel Dual Diaphragm Air Pump for Chemical Industrial Use
Sturdy Stainless Steel Body
PTFE Double Diaphragm
Professional Air-Operated Designs
Sealed Ball Valve
Handle Various Material
Versatile Uses
Suction: 0-5 m (0-16.4 ft),Outlet Port: 1/2 inch (12.7 mm),Inlet Port: 1/2 inch (12.7 mm),Max. Suspended Solids: 1/8 inch (3.18 mm),Air Inlet Size: 1/4 inch (6.35 mm),Gas Nozzle: 0.32 inch (8 mm),Max Flow Rate: 3 GPM,Pump Body Material: Stainless Steel,Max. Fluid Temp.: 122 ℉,Model: QBK-15P,Max PSI: 90 psi,Average Air Consumption: 10 CFM,Max Head: 69 m (226.4 ft)