What are the key advantages of a peristaltic pump?

Peristaltic pumps offer contamination-free pumping as the fluid only contacts the tubing. They are also suitable for shear-sensitive fluids and can handle a wide range of viscosities with high accuracy.

Can this pump handle abrasive fluids?

Yes, peristaltic pumps are generally well-suited for abrasive fluids because the fluid does not contact any moving parts of the pump mechanism, only the tubing, which can be selected for wear resistance.

What maintenance is typically required for a peristaltic pump?

Primary maintenance involves routine inspection and replacement of the tubing, as it is the only part in contact with the fluid and subject to wear. The pump head rollers may also require occasional inspection.

Is this pump suitable for continuous operation?

Yes, models in this series are designed for continuous operation in industrial environments. Their robust construction and brushless DC motor support extended use.

What is 'MemoDose' functionality?

MemoDose is a feature commonly found on these pumps that allows for precise, repeatable single-shot dosing, which is useful for applications requiring exact dispensed volumes.

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Used 620S/R Peristaltic Pump - Peristaltic Pumps

used Equipment

Available

Verified seller

Watson Marlow - 620S/R Peristaltic Pump

Name: 620S/R Peristaltic Pump
Brand: Watson Marlow
SKU: 45289.SR4B
Availability: InStock

Price: Contact seller for price

This listing is for 1 of 7 Watson Marlow 620S/R Peristaltic Pumps

The units are in full working condition and ready for immediate use

Design & Functionality

The 620S/R model is part of the 600 Series of cased peristaltic pumps featuring a brushless DC motor equipped with digital keypad control (620S) and a sturdy NEMA 2 / IP31 vented, wipe‑down enclosure suited for dry industrial environments ,It operates at dual voltage (100–120 V or 200–240 V, 50/60 Hz) and includes features like MemoDose for one-shot dosing and wireless guard-switching for safety

The casing is chemically resistant, with powder-coated die-cast aluminium construction and an easy-to-clean membrane keypad

Pump Performance

Flow range: 0.00026 to ~4.23 gpm (equivalent to ~0.001 to 16 L/min) with the 620R pump head

With newer 620RE LoadSure heads, the flow increases up to ~4.76 gpm (0.004–18 L/min)

Pressure capability: Up to approximately 60 psi (4 bar) with the appropriate head and tubing

Control accuracy: Exceptional 2,650:1 turndown ratio, fine speed control from 0.1 to 265 rpm in selectable increments (0.1, 0.5, 1, 2, 5, or 10 rpm), with 0.1% speed accuracy

Pump Heads & Tubing

The model supports the following interchangeable pump heads:

620R Mk II (continuous tubing, two rollers)

620RE and 620RE4 (LoadSure elements, two or four rollers)

These heads are compatible with various tubing materials (e.g., Marprene™, Bioprene™, Sta‑Pure™, silicone) and sizes (typically 6.4 mm to 17 mm inner diameter)

The 620RE and RE4 heads feature retractable rollers for easier cleaning (CIP/SIP) and rapid loading

AFAB Lab Resources - Used Lab Equipment

Physical Attributes & Construction

Ingress Protection: IP31 (NEMA 2) for the standard 620S/R; there are IP66/NEMA 4X variants (e.g., 620SN/R) for environments requiring better dust and water resistance

Weight: Around 19.6 kg (with 620R/RE head) to 20.1 kg (with 620RE4)

Sound level: Less than 70 dB(A) at 1 m—relatively quiet for continuous industrial operation

Advanced Features

MemoDose: Delivers precise single-shot volumes—ideal for dosing applications

Ramp function & non‑drip: Ramp improves handling of delicate fluids, preventing splashes/frothing, while non-drip minimizes residual drips at dose end (noted in related Di versions but often included in feature suites)

Data export: Some models (e.g. 620S/RE) support RS‑232 export of batch records—important for GMP compliance

Cambridgeshire, United Kingdom

5,791 km away

Model Number

620S/R

Stock Number

45289.SR4B

Machinery Masters View

Typical context for this category of equipment. Always confirm specifics with the seller.

Applications & Use Cases

Precision dosing and transfer of sensitive fluids in pharmaceutical manufacturing.
Handling of sterile media and reagents in biotechnology laboratories.
Metering of chemicals in water treatment and industrial processes.
Transfer of viscous or shear-sensitive liquids in food and beverage production.
Sampling and dispensing in analytical and research settings.

Typical Specifications

Typical Flow Rate: For this class of equipment, flow rates commonly range from approximately 0.001 L/min up to 18 L/min, depending on the pump head and tubing configuration.
Pressure Capability: Units of this type typically achieve pressures up to 4 bar (60 psi) with appropriate tubing and pump head selection.
Speed Control: Fine speed control from 0.1 to 265 rpm is commonly found, offering a high turndown ratio for precise operation.
Power Supply: This model is typically dual voltage, operating on either 100–120 V or 200–240 V, 50/60 Hz.
Tubing Compatibility: Compatible with various tubing materials (e.g., Marprene™, Bioprene™, Sta‑Pure™, silicone) and inner diameters, typically from 6.4 mm to 17 mm.
Enclosure Rating: Units of this type commonly feature a NEMA 2 / IP31 rated enclosure, suitable for dry industrial environments.

Frequently Asked Questions

Peristaltic pumps offer contamination-free pumping as the fluid only contacts the tubing. They are also suitable for shear-sensitive fluids and can handle a wide range of viscosities with high accuracy.

Machinery Masters Intelligence. General guidance for this category of equipment only, not a substitute for the seller's exact specifications. Always confirm details with the seller.