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-80
For high-volume, solids-heavy work the QBY-80’s 3-inch body delivers up to 24 m³/h and swallows solids as large as 10 mm. It is built for dewatering, tank emptying and thick-slurry transfer where a sm…
| Flow Rate | 0-30m³/h |
|---|---|
| Head | 0 – 50 / 70m |
| Inlet / Outlet Diameter | 10 – 100mm |
| Material | PP Engineering Plastic, Aluminum Alloy, Cast Iron, Stainless Steel |
For high-volume, solids-heavy work the QBY-80’s 3-inch body delivers up to 24 m³/h and swallows solids as large as 10 mm. It is built for dewatering, tank emptying and thick-slurry transfer where a smaller pump would clog or crawl.
| Port size | 80 mm (3 in) |
| Max flow | 24 m³/h |
| Max head | 60 m |
| Suction lift | 7 m |
| Max particle | 10 mm |
| Air consumption | 1.5 m³/min (≤7 bar) |
It can even be lowered into a pit and run fully submerged, and if the pit empties it simply keeps stroking without damage — no dry-run trip, no burnt motor.
Applications: wastewater treatment, mining slurry, construction dewatering, cement grout, petrochemical, ceramics, marine bilge
HAQUANPUMP builds the full QBY range in-house. Send us your fluid, flow and head, and we will recommend the exact model, body material and diaphragm for the job.
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.
QBY Air-Operated Diaphragm Pump (AODD)The Full QBY FamilyThe QBY series covers eight standard sizes from 10 mm to 100 mm. Flow ranges from 0.8 m³/h to 30 m³/h. Head goes up to 60 meters. There’s a model for almost every job. Complete Mode…
QBY Air-Operated Diaphragm Pump (AODD)When You Need Big FlowThe QBY-80 and QBY-100 are the largest standard models. They handle high-volume transfer jobs where smaller pumps would struggle. Both models share the same robust design princip…