HaquanPump & Valve
QBY-40 Pneumatic Diaphragm Pump – 8 m³/h, 60 m Head, Versatile Workhorse — QBY AODD Pump
QBY AODD Pump

QBY-40 Pneumatic Diaphragm Pump – 8 m³/h, 60 m Head, Versatile Workhorse

Model: QBY-40

Here’s a pump that shows up on job sites everywhere. The QBY-40 with its 40 mm port moves up to 8 m³/h and pushes liquid up to 60 meters high. It’s a favorite in wastewater plants, chemical factories,…

Specifications
Flow Rate0-30m³/h
Head0 – 50 / 70m
PowerkW
Inlet / Outlet Diameter10 – 100mm
MaterialPP Engineering Plastic, Aluminum Alloy, Cast Iron, Stainless Steel

Product Overview

Here’s a pump that shows up on job sites everywhere. The QBY-40 with its 40 mm port moves up to 8 m³/h and pushes liquid up to 60 meters high. It’s a favorite in wastewater plants, chemical factories, and construction sites.

What Sets It Apart
The QBY-40 uses a double-diaphragm design with two chambers working alternately. Compressed air shifts between chambers, pushing the diaphragms back and forth. This creates suction on one side while discharging on the other — smooth and continuous flow.

Solid Performance Data

ParameterValue
ModelQBY-40
Port Size40 mm (1.5″)
Max Flow8 m³/h
Max Head60 m
Max Pressure6 kgf/cm²
Suction Lift7 m
Solids Passage4.5 mm
Air Consumption0.6 m³/min

Where It Shines

Pumping sludge from settling tanks

Transferring acids between storage vessels

Moving food products like chocolate and jam

De watering excavation sites

Feeding filter presses in mining operations

Maintenance Tips
Change the diaphragms when you notice reduced flow. Check the ball valves and seats for wear every few months. Keep the air supply clean — install an air filter if you haven’t already.


Applications Summary:​
sludge pumping, acid transfer, food product handling, dewatering, filter press feeding, mining operations, wastewater treatment
We appreciate you visiting HAQUANPUMP. If you’re looking for a dependable QBY diaphragm pump, we’ve got you covered. Contact our team for specs, pricing, or application advice — we’re happy to help.

Typical Applications

  • sludge pumping
  • acid transfer
  • food product handling
  • dewatering
  • filter press feeding
  • mining operations
  • wastewater treatment

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