Request a quoteDiaphragm pumps · QBY
QBY Pneumatic Diaphragm Pump
An air-operated diaphragm pump series for liquid transfer where compressed air is the drive source. Confirm wetted materials and diaphragm compatibility for the actual fluid.

Typical applications
Where this series may fit.
Application fit and final model depend on operating conditions. Please confirm with the current technical sheet.
- Process-liquid transfer
- Transfer where air drive is preferred
- Applications requiring liquid-compatible wetted parts
Technical overview
How this range is used.
These are series-level characteristics, not a performance guarantee for a specific model. Confirm flow, head or pressure, power, dimensions, materials, and operating limits against the current datasheet.
- 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.
Selection information
What we need to size it.
- Liquid composition, viscosity and solids
- Required flow and discharge pressure
- Available compressed-air supply and material compatibility
Technical confirmation
Ask for the current model table and curve.
No flow, head, motor-power or material values are published here without a verified datasheet. Send your operating point so JIABO can recommend an exact model.