Series DBY-QBK · Technical reference pages 127–128

DBY / QBK Diaphragm Pump

Diaphragm Pumps

Diaphragm-pump family combining DBY electric diaphragm pumps and QBK pneumatic diaphragm pumps. The published technical data highlights isolation of pumped medium from moving parts, self-priming capability and suitability for difficult-flowing media.

Suction liftup to 6 m

Delivery liftup to 70 m stated

Max. passing particleup to 10 mm stated

Pneumatic pressure1–8 bar stated

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Selection notes

Applications & selection context

Slurry, mud and impurity-bearing liquids
Toxic, volatile or corrosive media with compatible diaphragm / body materials
Flammable locations for pneumatic QBK where configuration is appropriate
General difficult-transfer applications

Product characteristics

Key product features

No priming water required (catalog statement)
Self-priming suction up to 6 m stated
QBK pneumatic flow / head adjustment by air valve
Multiple diaphragm materials: Buna-N, neoprene, EPDM, Viton, Teflon

Engineering selection: Send flow, head, medium / composition, temperature, density or viscosity, solids content / particle size, required material, motor voltage / frequency and installation conditions. Final model and materials require engineering confirmation.

Technical reference

Model tables & performance data

The pages below are rendered directly from the supplied 144-page XINTAO Pump Product Manual so detailed model tables, performance data and original wording remain available without transcription risk. Click any sheet to open it at full size.

Show / hide 2 technical sheets · PDF pages 127–128

Technical sheet page 127

Technical sheet page 128

Published family data supports preliminary selection. Final duty point, materials, motor configuration and acceptance documents must be confirmed for the actual service.

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