· 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: 120 psi; Max. Flow Rate：79.6 GPM; Max Head Lift：275.6 ft/84 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 inch; Air Inlet Size: FNPT 1/2 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.

Specifications
Type: Double diaphragm
Body Material: Polypropylene
Inlet Port: 1 inch (25 mm)
Outlet Port: 1 inch (25 mm)
Air Inlet Size: 1/2 inch (12.7 mm)
Max Flow Rate: 7 m3/h (30 GPM)
Suction: 0-5 m (0-16.4 ft)
Max Suspended Solids: 3 mm (1/8 inch)
Max Head: 84 m (275.59 ft)
Max PSI: 120 psi
Self-Priming Dry: 3 m (10 ft)
Self-Priming Wet: 4.6 m (15 ft)

Package Content
1 x Air-Operated Double Diaphragm Pump QBY4-25PP
1 x Product Manual