Watson Marlow Peristaltic Pump 520S Drive 220 RPM

Watson-Marlow 520S IP31 Peristaltic Pump Drive (056.7131.00A) – 220 RPM

The Watson-Marlow 520S (056.7131.00A) is an industrial-grade, microprocessor-controlled peristaltic pump drive engineered for high-precision fluid transfer in biopharmaceutical, chemical synthesis, and regulated laboratory environments. Operating at speeds up to 220 RPM with a 25:1 speed control ratio, this robust drive delivers exceptional dosing accuracy and reproducible flow rates. Housed in an IP31-rated enclosure, it provides clean, oil-free horizontal displacement that isolates sensitive media from the pump mechanisms, making it an ideal workhorse for scale-up processes and GMP production lines.

Technical Performance & Design

• High-Precision Brushless DC Drive: Powered by a maintenance-free brushless DC motor that delivers a variable speed control range from 4 to 220 RPM, achieving smooth, pulsatile-managed flow profiles.
• Intuitive Membrane Control Interface: Designed with a clear digital LCD display paired with a chemical-resistant membrane keypad, allowing operators to easily set precise RPM metrics, toggle flow direction, and manage simple calibration steps.
• PIN-Protected Software Interlocks: Features a keypad lock function with customizable security PIN codes, preventing unauthorized protocol modifications and ensuring process parameters remain strictly validated during long continuous runs.
• Rugged IP31 Enclosure Architecture: Encased in a durable, powder-coated aluminum housing rated for IP31 ingress protection, providing robust defense against dry particulates and vertically falling liquid drops.

Product Specifications

• Model Series / SKU: 520S Drive / Catalog No. 056.7131.00A
• Rotational Speed Range: 4 to 220 RPM (Infinitely variable)
• Speed Control Ratio: 25:1
• Ingress Protection Rating: IP31 (Protected against solid objects over 2.5 mm and condensation drops)
• User Interface Panel: Large digital LCD with tactile membrane programming keys
• Directional Profile: Bi-directional (Reversible flow orientation for priming or purging fluid paths)
• Enclosure Materials: Heavy-duty epoxy-powder coated aluminum chassis
• Electrical Architecture: 100V - 240V AC, 50/60 Hz (Universal auto-switching voltage layout)

Key Benefits & Applications

• Bioprocessing & Cell Culture Feeding: Delivers low-shear horizontal displacement, ensuring delicate mammalian cells, proteins, and nutrient media are pumped without mechanical lysis or degradation.
• Tangential Flow Filtration (TFF) & Scale-Up: Provides the steady differential pressures and predictable flow kinetics required for standard ultrafiltration and cross-flow filtration loops.
• Chemical Dosing & Acid/Base Dispensing: Since fluids only contact the interior wall of the flexible tubing, this drive safely manages aggressive solvents, strong acids, and volatile chemical reagents without risking system corrosion.
• Zero Cross-Contamination Maintenance: Changing lines or fluid paths takes seconds—simply release the tube clamps on the matching pumphead, thread a new sterile tubing assembly, and begin the next batch validation run without intermediate sanitation hold times.

Used, tested to be in great working condition. See working video here.

Watson-Marlow™ is a registered trademark of Watson-Marlow Fluid Technology Group. The 056.7131.00A catalog entry designates the standalone 520S drive unit only. Compounding accessories, including modular 520 series pumpheads (e.g., 520R or 520REL) and peristaltic tubing elements, must be selected independently to finalize your volumetric delivery metrics.