OverviewKNF diaphragm metering pumps for liquid handling combine compact design with chemical-resistance for precise, continuous dosing. Suitable for neutral and aggressive media, the FM 50 series is dry-running capable, self-priming and maintenance‑free. Multiple motor and hydraulic connection options allow integration into automated systems.
Benefits- Excellent reliability
- Low pulsation
- NSF certified
- Maintenance-free operation
- Can run dry
- FDA-approved material options available
- Self-priming
- Robust under varying process parameters
- Linear and predictable flow
- High dosing accuracy
- Customized calibration available
- Adjustable performance
- Highly resistant to aggressive media
- Digitally adjustable motor option
Special Features- Low pulsation
- NSF certified
Technical Details- Flow rate (max.): 0.5 l/min
- Pressure (max.): 1 bar (rel.)
- Suction height (max.): 3 mH₂O
- Valve material options: EPDM, FFKM
- Diaphragm material options: EPDM, PTFE
- Pump head material options: PP
- Motor type options: Brushless DC
Applications- Analytical instruments
- Chemical industry
- Cleaning and disinfection
- Food & beverage industry
- Fuel cells
- Inkjet printing
- Laboratory equipment
- Medical equipment
- Semiconductor processes
Downloads (available)- Datasheet FM 50 — PDF
- Operating Manual FM 50 — PDF
- 3D CAD Model FM 50 — ZIP
NotesSample available for evaluation. Multiple valve, diaphragm and motor material options support handling of neutral to aggressive liquids and facilitate regulatory compliance.