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.

For grinding, abrasive duty the cast iron QBY is the tough option. Its heavy body absorbs the wear of sand, slag and mud far better than plastic, which is why it is a mainstay of mining, cement and he…
| 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 grinding, abrasive duty the cast iron QBY is the tough option. Its heavy body absorbs the wear of sand, slag and mud far better than plastic, which is why it is a mainstay of mining, cement and heavy wastewater work.
Paired with a nitrile or neoprene diaphragm, a cast iron QBY moves slurry and sludge for long service intervals, and the few parts that do wear — balls, seats and diaphragms — are quick and inexpensive to change on site.
QBY Pneumatic Diaphragm Pump Technical Parameters
| Parameter | Specification Range |
|---|---|
| Flow Rate | 0 – 30 m³/h |
| Max Head | 0 – 50 / 70 m |
| Port Size (Caliber) | 10 – 100 mm |
| Working Temperature | -15℃ ~ +150℃ |
| Working Air Pressure | 0.1 – 0.7 MPa |
| Self-Priming Height | 5 – 7 m |
| Max Passable Solid Particle | 10 mm |
Applications: mining slurry, wastewater and sludge, cement grout, petrochemical, oil and mud, construction dewatering, general industry
Have a corrosive, abrasive or hard-to-handle fluid to move? The HAQUANPUMP engineering team will help you specify the right QBY pump — reach out any time for advice or a quotation.
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…