Watson Marlow Peristaltic Pump 4-Roller Pumphead 314D

Watson-Marlow 314D Peristaltic Pumphead – 4-Roller Rotor Assembly, Iconic Flip-Top Rapid Tube Loading Design, Engineered for 1.6 mm Wall Thickness Continuous Tubing, Single Channel (MPN: 133.4411.S84 / 033.4411.000)

The Watson-Marlow 314D (Precision part code matrix 133.4411.S84, sharing mechanical heritage with the standard 033.4411.000 platform) is a premium, clinical-grade peristaltic pumphead engineered to deliver pulse-free, high-accuracy liquid transfers across fluidic systems, automated analytical lines, and bio-processing decks. Fabricated from a rugged polyacrylamide-IXEF (PARA) track framework paired with a glass-filled polypropylene housing, this single-channel pumphead features a specialized four-roller rotor layout. The four-roller configurations significantly reduce mechanical pulse spikes and achieve higher dosing accuracy tolerances than standard three-roller options (such as the 313D). Utilizing Watson-Marlow’s iconic flip-top rapid-load clamp structure, this pumphead permits automated or manual continuous tubing transitions in seconds without requiring separate connectors, minimizing fluid shear stresses on fragile biological targets.

Technical Performance and Engineering

• Iconic Flip-Top Rapid Loading Design: Features an attached mechanical lever latch that hinges open the entire track bed. This allows technicians to slide continuous lines of peristaltic tubing straight into the compression arc without trimming, threading, or breaking aseptic system loops.

• Low-Pulsation 4-Roller Geometry: Outfitted with four high-precision rollers molded from MoS2-filled Nylon 6 (Nylatron®) mounted to electroless nickel-plated hardened steel spindles. The dense mechanical tracking splits compression loads cleanly, supplying a highly uniform flow path with minimal fluid ripple lines.

• Variable Tube Size Adjusting Clamps: Equipped with spring-loaded, self-adjusting side tube clamps that securely lock onto multiple continuous tubing wall bores without manual jaw adjustments, completely preventing tubing creeping or lateral migration under backpressures.

• Robust Multi-Channel Modular Extension: Structural faceplates feature a quick-dock bayonet interface configuration. Depending on system drive motor torque ratings, users can stack extension pumpheads (314X) directly to the front face to build up to six separate fluid routing lines simultaneously.

Product Specifications

• Catalog Number / Partcode: 133.4411.S84 (Cross-listed within the 314D engineering line as 033.4411.000)

• Manufacturer / Brand: Watson-Marlow Fluid Technology Solutions (WMFTS)

• Pumphead Type Variant: 314D Series (4 Rollers, Single Channel, Variable Clamp Track)

• Volumetric Flow Rates Capacity: Yields flow rates from 0.05 mL/min up to 1200 mL/min under continuous tracking speeds (Up to 2400 mL/min for intermittent short bursts at 400 RPM)

• Compatible Tubing Wall Thickness: Calibrated strictly for 1.6 mm (1/16 inch) wall thickness peristaltic tubing profiles

• Compatible Tubing Inner Diameters: Accepts standard internal bores spanning 0.5 mm, 0.8 mm, 1.6 mm, 3.2 mm, 4.8 mm, 6.4 mm, and 8.0 mm

• Housing Chemistry Structure: Polyacrylamide-IXEF (PARA) front track and lever / Glass-filled Polypropylene rear plate shell / Stainless steel hardware pivots

• Internal Bearings Matrix: Fully sealed precision carbon steel ball bearings

Key Benefits and Applications

• Upstream Cell Culture Feeding: The gold standard fluidic driver for routing media, sterile buffers, and acid/base pH balancing reagents into laboratory fermenters and glass bioreactors without shearing active cell matrices.

• High-Precision Analytical Dosing: Precise volumetric displacement dynamics make this head highly suitable for automated sample routing, analytical reagent addition, and fractions collecting arrays inside industrial chromatography rigs.

• Zero Internal Fluid Contamination: Pumping mechanics interact entirely with the outer wall of the tubing line. Fluids never touch the pump components, guaranteeing an isolation boundary that blocks systemic carryover cross-contamination risks.

• Universal Drive Mount Integration: The rear bayonet mounting interface connects seamlessly to Watson-Marlow cased lab drives (such as the 323 or 520 series) or mounts directly to panel liquid handling cabinets via standard adapter kits.

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