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1/2″ Air Driven Double Diaphragm Pump Qby4-15 Poly/sant Valve Balls Included



  • 【MAIN PARAMETER】- Material: Aluminum; Type: Double diaphragm; Operation Type: Air-operated; Inlet/Outlet Port Size/Standard: 1/2 inch (12.7 mm); Air Inlet Size: NPT 1/4 inch (6.35 mm).
  • 【QUALITY PERFORMANCE】- Maximum Head: 69 m (226.4 ft), Max Pressure: 100PSI. Max Temp: 150 ℉. Top quality glyd ring, a double-acting seal that delivers better performance. 1/4 inch air inlet with NPT fitting uses standard shop air for easy operation.
  • 【UNIQUE DESIGN】- Features an externally serviceable air distribution system and all-bolted construction. Modular air valve is stall-free, this low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes down time.
  • 【EXCELLENT CONSTRUCTION】- Rugged construction – resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling.
  • 【VERSATILE USE】- The diaphragm pump with convenient operating are widely used in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive etc.


Body Material Polypropylene
Diaphragm Material Nitrile
Inlet Port 1/2 inch (12.7 mm)
Outlet Port 1/2 inch (12.7 mm)
Air Inlet Size 1/4 inch (6.35 mm)
Gas Nozzle 0.32 inch (8 mm)
Max Flow Rate 2 m3/h (7 GPM)
Suction 0-5 m (0-16.4 ft)
Max Suspended Solids 2.38 mm (3/32 inch)
Max Head 69 m (226.4 ft)
Check Seat Material Polypropylene


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