QBY Air-Operated Diaphragm Pump (AODD)QBYS Stainless Steel Pneumatic Diaphragm Pump
The QBYS is the stainless-steel version of the QBY pneumatic diaphragm pump — SS304/SS316 for corrosive, food and hygienic fluids. Full size range, in stock.

Model: QBY-50
Once flow and solids climb beyond what a 1.5-inch pump handles comfortably, the QBY-50’s 2-inch body takes over. It moves up to 12 m³/h and passes solids to 8 mm, making it a workhorse for slurry, slu…
| Flow Rate | 0-30m³/h |
|---|---|
| Head | 0 – 50 / 70m |
| Inlet / Outlet Diameter | 10 – 100mm |
| Material | PP Engineering Plastic, Aluminum Alloy, Cast Iron, Stainless Steel |
Once flow and solids climb beyond what a 1.5-inch pump handles comfortably, the QBY-50’s 2-inch body takes over. It moves up to 12 m³/h and passes solids to 8 mm, making it a workhorse for slurry, sludge and thicker process fluids.
| Port size | 50 mm (2 in) |
| Max flow | 12 m³/h |
| Max head | 60 m |
| Suction lift | 7 m |
| Max particle | 8 mm |
| Air consumption | 0.9 m³/min (≤7 bar) |
With no shaft seal and no close-fitting parts, abrasive media wear the pump only slowly, and there is nothing to leak — a real advantage when the fluid is toxic or corrosive.
Applications: wastewater and sludge, mining slurry, ceramics, chemical processing, cement grout, paint, petrochemical
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QBY Air-Operated Diaphragm Pump (AODD)The QBYS is the stainless-steel version of the QBY pneumatic diaphragm pump — SS304/SS316 for corrosive, food and hygienic fluids. Full size range, in stock.
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