• 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: 80 psi; Max. Flow Rate：2.5 GPM; Max Head Lift：226.4 ft/69 m.
• Sturdy & Leak-proof Construction: The diaphragm pump housing is made of polypropylene material, bolted against leakage, sturdy, and corrosion-proof for long-time use.
• Excellent Air-operated Performance: Inlet/Outlet Port Size: 1/2 inch (12.7 mm); Air Inlet Size: FNPT 1/4 inch (6.35 mm). 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 1/2 Inch Inlet Outlet Polypropylene 13 GPM Max 100PSI,Nitrile Corrosion-Proof Diaphragm Air Pump for Chemical Industrial Use,QBY-15PP
Sturdy Polypropylene Body
PTFE Double Diaphragm
Professional Air-Operated Designs
Sealed Ball Valve
All-Bolted Construction
Wide Application
Suction: 0-5 m (0-16.4 ft),Outlet Port: 1/2 inch (12.7 mm),Ball Material: Santoprene(R),Inlet Port: 1/2 inch (12.7 mm),Air Inlet Size: FNPT 1/4 inch (6.35 mm),Max Flow Rate: 2.5 GPM,Temp. Rating: -20℉ ~ 150 ℉,Self-Priming Dry: 3 m (10 ft),Body Material: Polypropylene,Max Suspended Solids: 2.38 mm (3/32 inch),Model: QBY-15PP,Self-Priming Wet: 4.6 m (15 ft),Max PSI: 80 psi,Max Head: 69 m (226.4 ft)