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,…
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
Parameter
Value
Model
QBY-40
Port Size
40 mm (1.5″)
Max Flow
8 m³/h
Max Head
60 m
Max Pressure
6 kgf/cm²
Suction Lift
7 m
Solids Passage
4.5 mm
Air Consumption
0.6 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.
How much does a QBY air diaphragm pump weigh, how is it packed, and how fast can it ship? Real figures from our orders, plus the spares to order with it.