Should I choose QBY or DBY?
QBY is air-operated and DBY is electric-drive. Start with the available utility and site requirements, then compare the exact models' flow, pressure, wetted materials and controls.
Ask about this rangeJIABO · Diaphragm range
Diaphragm pumps with air or electric drive.
QBY and DBY are separate pump families. QBY uses compressed air; DBY uses an electric drive. The correct configuration depends on liquid compatibility, required flow and pressure, site utilities, and the exact pump materials.
Choose a series
Diaphragm pumps range.
Supplied photos show configurations, not certified ratings for a specific model. Request current performance and material data before specifying a pump.
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.
Explore series →
DBY
DBY Electric Diaphragm Pump
An electric-drive diaphragm pump series. Select the pump around the liquid, required flow, discharge conditions and available electrical supply.
Explore series →Range comparison
Which arrangement should you investigate?
These distinctions help narrow the inquiry. They are not a substitute for an exact model curve or materials list.
| Series / arrangement | What distinguishes it | Confirm before selection |
|---|---|---|
| QBY pneumatic | Air-operated diaphragm arrangement where a suitable compressed-air supply is available. | Air pressure and consumption, fluid compatibility, flow and discharge pressure. |
| DBY electric | Electric-drive diaphragm arrangement for sites with a matching power supply. | Motor and electrical protection, control needs, fluid compatibility and duty curve. |
Supplied product photos
See the equipment.
Photos show configurations within this range. They do not establish a model’s flow, head, pressure or materials; check the current datasheet before ordering.
Typical applications
Where it may fit.
- Industrial liquid transfer after compatibility review
- Installations where air or electric power determines the pump arrangement
- Intermittent or process transfer, subject to model confirmation
For a model recommendation
What to send us.
- Liquid chemistry, viscosity, solids and temperature
- Required flow, discharge pressure and suction conditions
- Available compressed air or electrical supply
- Diaphragm, ball, seal and wetted-part materials
Buyer questions
Diaphragm pumps: practical answers.
For final selection, confirm the exact model and operating conditions with JIABO.
Which parts must be checked for liquid compatibility?
Confirm the diaphragm, balls, seats, seals and other wetted parts against the actual liquid, concentration and temperature. A series name alone does not guarantee compatibility.
Can I assume any diaphragm model may run dry?
No. Operating limits vary by model and configuration. Request the current instructions before relying on dry-run or solids-handling capability.
Before choosing a model
Prepare the duty point and liquid details.
Our selection guides show what to measure and what to ask for in the current technical sheet.
Talk to JIABO
Ask for the current model table and quotation.Share the liquid, required duty point, power supply and installation details.