The WATSON-MARLOW 520U is a heavy-duty industrial peristaltic metering pump engineered for accurate, contamination-free dosing of fluids in demanding process environments. Utilizing a positive displacement design with a rotating roller assembly, it delivers precise flow rates without valves or seals, ensuring minimal maintenance and long service life.
WATSON-MARLOW 520U Technical Specifications
| Parameter | Specification |
|---|---|
| Pump Type | Peristaltic, positive displacement |
| Flow Rate Range | 0.1 – 2,000 mL/min (dependent on tube size) |
| Discharge Pressure | Up to 2 bar (29 psi) |
| Speed Range | 0.1 – 220 rpm |
| Drive Type | Brushless DC motor with integrated speed control |
| Control Interface | Manual keypad, remote analog/digital, RS485 |
| Tube Materials | Silicone, Norprene, Tygon, Viton (various sizes) |
| Ingress Protection | IP31 (standard) |
| Operating Temperature | 0 – 40 °C (32 – 104 °F) |
| Mounting | Bench or panel mount |
Key Engineering Features
- Valve-less, seal-less design eliminates clogging and contamination
- High turndown ratio for precise low-flow metering
- Easy tube replacement without tools
- Chemical-resistant housing and components
- Integrated speed control and remote operation capability
Industrial Applications
- Water and wastewater treatment chemical dosing
- Food and beverage additive metering
- Pharmaceutical and biotech fluid transfer
- Laboratory and pilot-scale process development
- Industrial cleaning and sanitization systems
For technical inquiries, dimensional drawings, or replacement support for WATSON-MARLOW 520U, contact the Pro-Hydraulic engineering team.
PRODUCT IMAGES

WATSON-MARLOW 520U Peristaltic Metering Pump
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the WATSON-MARLOW 520U Peristaltic Metering Pump. This precision-engineered industrial component delivers reliable performance and accurate operation for demanding industrial systems.