Request a quoteDiaphragm pumps · QBY
QBY Air-Operated Double Diaphragm Pump
Air-operated double diaphragm (AODD) pumps for chemicals, viscous liquids and solids-bearing process fluids where compressed-air drive and compatible wetted materials are required.
This photograph shows a configuration in the QBY range. The file does not identify an exact model number, so appearance and specifications must be confirmed before ordering.
Product overview
Where this pump may be used.
Transfer duties where an air-driven pump is preferred.
- Process-liquid transfer
- Transfer where air drive is preferred
- Applications requiring liquid-compatible wetted parts
Reference specification sheet
Parameters for an international quotation.
These values describe common enquiry formats in Europe and North America—not confirmed ratings for every JIABO model. The quotation and motor nameplate control the final specification.
| Primary duty data | Required flow, discharge pressure and suction condition; describe solids and acceptable pulsation. |
|---|---|
| Drive utility | QBY: available compressed-air pressure and volume. DBY: electrical supply, with regional voltage/frequency confirmed. |
| Electrical reference | For electric-drive DBY enquiries: Europe commonly 220–240 V 1-phase or 380–415 V 3-phase at 50 Hz; North America commonly 230/460 V 3-phase at 60 Hz. |
| Construction to specify | Body, diaphragm, ball, seat and seal materials selected against the actual liquid and cleaning chemicals. |
| Documents to request | Flow versus pressure/air-consumption data, solids limit, connection size, dimensions and approved material combination. |
Regional electrical examples are reference conventions supported by published manufacturer data: Grundfos 230/400 V, 50 Hz data ↗ and Franklin Electric 230/460 V, 60 Hz data ↗. Availability must be confirmed for the selected JIABO model.
Popular parameter reference
Selected QBY pneumatic diaphragm parameters
Workbook-listed values for common QBY sizes. Confirm the body, diaphragm, ball and seat materials against the liquid and cleaning chemicals.
| Model | Port | Flow | Head | Suction lift | Particle passage |
|---|---|---|---|---|---|
| QBY-25 | 25 mm | 2.4 m³/h | 50 m | 7 m | 2.5 mm |
| QBY-40 | 40 mm | 8 m³/h | 50 m | 7 m | 4.5 mm |
| QBY-50 | 50 mm | 12 m³/h | 50 m | 7 m | 8 mm |
| QBY-80 | 80 mm | 24 m³/h | 50 m | 7 m | 10 mm |
Technical description
What to know before selection.
- Operating principle
Compressed air alternately moves diaphragms to draw in and discharge liquid. - Configuration
Air-operated, positive-displacement diaphragm pump. - Liquid suitability
Process liquids selected against diaphragm, valve, and wetted-part compatibility. - Typical use
Transfer duties where an air-driven pump is preferred.
Model specifications
Confirm the exact duty point.
A photo alone cannot establish a performance curve or exact SKU. Share these details to receive the matching model table, dimensions, and quotation.
- Liquid composition, viscosity and solids
- Required flow and discharge pressure
- Available compressed-air supply and material compatibility
Need an exact model?
Send us your requirements.
Tell us the photo number, required flow and head or pressure, liquid, installation conditions, and power supply. We will confirm the model and current datasheet.