Model: QBY5 1/2 inch, QBY5-50 (2 inch), polypropylene
Polypropylene QBY5 air diaphragm pumps for acids, in 1/2 inch and 2 inch (QBY5-50) sizes: what each size delivers and what to check before ordering.
| Flow Rate | About 1 m³/h (1/2 inch) to 12 m³/h (2 inch) |
|---|---|
| Power | Compressed air, no motor |
| Inlet / Outlet Diameter | 1/2" and 2" (QBY5-50) |
| Material | Polypropylene (PP) body |
Not sure this pump fits your duty? Try the pump selector
For acids, a polypropylene body is often the most economical choice. Polypropylene does not corrode the way metals do, and it is far lighter than stainless steel. We have supplied polypropylene QBY5 pumps for acid duty in two sizes, 1/2 inch and 2 inch. Ask us for current stock.
| Size | Model | Typical use | Approximate maximum flow |
|---|---|---|---|
| 1/2″ | QBY5, 1/2 inch | dosing, small transfers, sampling | about 1 m³/h |
| 2″ | QBY5-50 | tank unloading, transfer between process tanks | 12 m³/h |
The QBY5 is the fifth-generation QBY. Its three-way pilot air valve avoids the dead point that can make older air valves stall, so the pump starts reliably and keeps cycling on continuous duty. More detail is on the QBY5 page.
Send us the acid, concentration, temperature and flow, and we will confirm the size and the diaphragm before you buy.
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