← All pump products

DIAPHRAGM PUMP RANGE

Industrial Diaphragm Pumps | Air-Operated & Electric

Choose the drive, wetted materials and configuration around the liquid, operating duty and available site utilities.

Request selection support ↗
PRODUCT / QBY SeriesQBY air operated double diaphragm pump

PRODUCT OVERVIEW

Designed around the operating conditions.

Shanghai Shangcheng Pump & Valve Manufacturing Co., Ltd. is an industrial diaphragm pump manufacturer supplying air-operated and electric configurations. Select a chemical transfer diaphragm pump by the actual liquid, operating duty and compatible wetted components.

An air operated diaphragm pump, also called a pneumatic diaphragm pump, is driven by compressed air and requires a suitable air supply. An electric diaphragm pump uses a motor and its associated drive mechanism, matched to the electrical supply and process duty. DBY and Electric Standard are electric-drive models, not pneumatic products.

For pneumatic models only, review flow, pressure, materials and compressed-air conditions in our air operated diaphragm pump selection guide.

AVAILABLE PRODUCT TYPES

Model families within this range.

These are product configurations supplied in the series. Drive type and site requirements differ by model; final wetted-material and operating-point selection requires review of the actual duty.

TYPICAL APPLICATIONS

  • Chemical dosing and transfer
  • Paints and coatings
  • Wastewater treatment
  • Viscous liquid handling

DRIVE-SPECIFIC SELECTION

  • Air-operated: provide compressed-air pressure and supply capacity; review air consumption and installation conditions.
  • Electric: provide electrical supply; confirm motor and drive configuration, operating duty and installation conditions.
  • Both: specify required liquid flow and discharge pressure separately.
  • Confirm diaphragm and wetted-material compatibility for the selected configuration.

INFORMATION FOR SELECTION

  1. 01Liquid name, concentration, temperature and viscosity
  2. 02Solids content and particle conditions
  3. 03Required flow, discharge pressure and suction conditions
  4. 04Drive utilities, continuous or intermittent operation and quantity

APPLICATION FIT

Where this series fits—and what to confirm first.

BEST FIT

Reviewed liquid-transfer duties where the chosen air-operated or electric model matches the medium, site utilities and operating conditions.

WHEN TO REVIEW AN ALTERNATIVE

For steady low-pulsation delivery of viscous media, review a progressive cavity screw pump.

OPERATING NOTES
  • For pneumatic models, confirm compressed-air quality, pressure and supply capacity; for electric models, confirm the power supply and drive arrangement.
  • Review diaphragm and all wetted components against the liquid, concentration, temperature and solids.
  • Do not assume every model permits dry running, has the same sealing arrangement or handles every corrosive or solids-bearing liquid.

ENGINEERING SUPPORT

Let us check the duty point before you order.

For diaphragm pump selection and quotation, send the liquid and concentration, temperature, viscosity, solids and particle conditions, required flow, discharge pressure, suction arrangement, operating schedule and quantity. Add compressed-air pressure and capacity for pneumatic models, or electrical supply and motor/drive requirements for electric models. Review the selection guide before submitting the duty.

Send project details ↗