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The QBY series of pneumatic diaphragm pumps are powered by compressed air and are ideal for handling fluids containing particles, as well as various types of liquids that may be highly viscous, volatile, corrosive, toxic, or colloidal in nature. The pump body is constructed from aluminum alloys, cast iron, or stainless steel, while the diaphragm is made from high-quality rubber such as Nitrile, Chloroprene, or Fluorine rubber. These pumps are widely used across industries like petrochemicals, electronics, ceramics, food processing, and textiles.
2. Product Advantage
3. Models For Clients Choosing
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Model
Caliber (mm)
Flow (m³/h)
Head (m)
Suction Lift (m)
Max Grain Diameter (mm)
Max Air Pressure (kgf/cm²)
QBY-10
10
0.8
50
5
1
4–7
QBY-15
15
1
50
5
1
4–7
QBY-20
20
1.8
50
5
2.5
2–7
QBY-25
25
2.4
50
5
2.5
2–7
QBY-32
32
5.6
50
5
4.5
2–7
QBY-40
40
8
50
5
4.5
2–7
QBY-50
50
18
50
5
8
2–7
QBY-65
65
24
50
5
8
2–7
QBY-80
80
27
50
5
10
2–7
QBY-100
100
40
50
5
10
2–7
4. Spare Parts Showing
5. Pump Instruction
6. Applications
7. Factory Show
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High Quality Mining Used Double Diaphragm Air Pump with Factory Price
Model NO.: QBK
Performance: No Leak
Color: Blue/Red/Black, Blue, etc.
Spare Parts: Diaphragm, Valve Ball, Ball Seat, Silencer, etc.
Connecting Way: Screw Connecting or Flange Connecting
Warranty: One Year for Pump, Three Months for Spare Parts
Usages: Sewage/Oil/Chemical/Food, etc.
Brand: Defu
Certificate: ISO, CE
Trademark: DEFU
Transport Package: Plywood Case or Carton
Specification: CE
Origin: China
1. Product Description