TYPICAL APPLICATIONS
- Chemical dosing and transfer
- Paints and coatings
- Wastewater treatment
- Viscous liquid handling
Request a quote ↗← Air Operated Diaphragm Pumps
QBY
Air Operated Diaphragm Pump
Pneumatic transfer with material combinations selected for the medium.
Inquire about this model ↗MODEL / QBY
SELECTION OVERVIEW
Confirm the duty before confirming the model.
QBY air operated double diaphragm pumps are driven by compressed air and contain no electric motor at the pump. Flow can be adjusted through the air supply, while body, diaphragm and valve materials are selected around the actual medium.
Comparing QBY with the QBK air operated diaphragm pump? Request quotations against the same liquid, flow, discharge pressure and available air supply. The series name alone does not establish differences in diaphragm construction, valve arrangement, material options or performance. Confirm each proposed configuration from its applicable product documentation before treating the two as interchangeable.
Ask for a side-by-side selection covering the pump body, diaphragm, balls and seats; delivered flow and air consumption at the required duty; permissible particle conditions; and suction performance with the actual liquid and inlet pipework. Also compare connection size and standard, installation space, operating schedule, maintenance access and replacement-part identification. Do not compare a maximum flow value from one series with a duty-point value from the other, or assume shared diaphragm and valve spare parts.
INFORMATION REQUIRED
- Liquid and solids content
- Viscosity
- Suction and discharge conditions
- Available air pressure and volume
OPERATING NOTES
- Air supply quality and capacity directly affect output.
- Body, ball, seat and diaphragm materials must all match the liquid.
- Actual flow falls as discharge pressure and viscosity increase.
KEY DESIGN POINTS
Built around the duty, installation and medium.
Pneumatic drive
Self-priming capability
Variable flow through air control
Multiple material combinations
TECHNICAL DOCUMENT
Diaphragm pump series catalog.
Review the QBY, DBY, QBK and related diaphragm-pump range, performance data, material options, dimensions, installation guidance and selection notes.
View or download PDF →Official Shangcheng document · PDF · 10 pagesRELATED TECHNICAL GUIDE
Review the air side and liquid side together.
Use the air operated diaphragm pump selection guide to review medium, flow, pressure, diaphragm materials and compressed-air conditions.
MODEL INQUIRY
Let us verify the operating point.
For a QBY quotation, send the liquid name and concentration, viscosity, temperature, solids content and maximum particle size; required liquid flow and discharge pressure; preferred wetted-body and diaphragm materials; available compressed-air pressure and supply capacity; connection size and type; and purchase quantity. Confirm air consumption at the required operating point and material compatibility with the actual medium before ordering.
Send requirements ↗