Cole-Parmer 07021-02 Plastic-Bodied Magnetic Drive Centrifugal Pump

Overview

The Cole-Parmer 07021-02 is a compact, oil-free magnetic drive centrifugal pump engineered for continuous, leak-free transfer of aggressive or sensitive fluids in laboratory and pilot-scale applications. Unlike traditional mechanically sealed centrifugal pumps, this model employs a hermetically sealed magnetic coupling—eliminating shaft seals and associated maintenance, leakage, and contamination risks. The pump operates on the principle of electromagnetic torque transmission: rotation of an external drive magnet induces synchronous rotation of an internal impeller-mounted magnet through a non-magnetic containment shell (here, molded polypropylene), ensuring complete isolation of the motor from the pumped medium. Designed specifically for low-to-medium head requirements, it delivers stable flow up to 18.9 L/min at 3.9 m head, with rated pressure capability of 3.4 bar. Its all-plastic wetted path—comprising PP body, impeller, and FKM elastomer gaskets—provides broad chemical compatibility with acids, bases, solvents, and aqueous solutions, while maintaining structural integrity up to 88 °C.

Key Features

• Hermetically sealed magnetic drive architecture eliminates dynamic seals and prevents fugitive emissions—critical for handling hazardous, volatile, or ultra-pure fluids.
• Polypropylene (PP) housing and impeller offer excellent resistance to corrosion from inorganic acids (e.g., HCl, HNO₃), alkalis (e.g., NaOH), and polar solvents; validated per ASTM D543 and ISO 175 exposure protocols.
• Fluoroelastomer (FKM) gasket set ensures long-term sealing performance across elevated temperatures and chemically aggressive environments.
• Compact footprint (19 × 9 × 11.4 cm) enables integration into fume hoods, glove boxes, recirculation loops, and benchtop synthesis stations.
• Single-phase 230 V, 50/60 Hz induction motor provides consistent speed regulation without need for variable-frequency drives under steady-state conditions.
• Modular inlet/outlet configuration supports flexible tubing and piping integration via standardized NPT threads (3/4″ NPT(M)/3/8″ NPT(F) inlet; 1/4″ NPT(M) outlet).

Sample Compatibility & Compliance

This pump is suitable for non-particulate, low-viscosity liquids (μ 50 µm. All wetted materials comply with USP Class VI biocompatibility standards and meet FDA 21 CFR 177.1520 (PP) and 177.2600 (FKM) for indirect food contact. While not certified to ATEX or IECEx, its non-sparking plastic construction and absence of lubricants make it appropriate for use in non-classified laboratory zones per NFPA 45 and ANSI Z9.5 ventilation guidelines.

Software & Data Management

The 07021-02 operates as a standalone analog device with no embedded firmware, digital interface, or data logging capability. Its design prioritizes mechanical reliability and regulatory transparency over connectivity—aligning with GLP/GMP environments where audit trails must originate from external instrumentation (e.g., flow meters, level sensors, or PLCs). When integrated into automated systems, flow rate and runtime can be monitored via external Coriolis or turbine flow transmitters compliant with ISO/IEC 17025 calibration traceability. No software validation package is supplied, consistent with ICH Q9 risk-based qualification for auxiliary lab equipment.

Applications

• Recirculation of etchants and cleaning baths in semiconductor wafer processing labs.
• Continuous feed of mobile phases in preparative HPLC and SFC systems requiring solvent compatibility and zero oil contamination.
• Coolant circulation in jacketed reactors and temperature-controlled crystallization setups.
• Transfer of pH-adjusted buffers in cell culture media preparation suites.
• Low-head aspiration in vacuum-assisted filtration manifolds where pulsation-free flow is essential.
• Integration into custom-built environmental simulation chambers for humidity control loops.

FAQ

Is this pump suitable for sterile or pharmaceutical-grade fluid handling?
Yes—provided the system is validated per ASME BPE 2023 for surface finish (Ra ≤ 0.8 µm achievable via post-machining polishing of PP components) and subjected to SIP-compatible thermal cycling (≤88 °C). Note: FKM gaskets require replacement after repeated autoclaving.
Can it handle deionized water with low conductivity?
Yes. Unlike conductive-fluid-dependent electrochemical pumps, magnetic drive operation is unaffected by resistivity. However, ensure adequate priming to avoid dry-run damage to the containment shell.
What maintenance intervals are recommended?
No scheduled maintenance is required for the magnetic coupling or wetted parts. Visual inspection of gasket integrity and impeller clearance is advised every 500 operating hours or per facility SOP.
Does the pump meet ISO 8573-1 for air purity when used in vacuum service?
N/A—the 07021-02 is a liquid-handling centrifugal pump, not a vacuum pump. For vacuum generation, refer to Cole-Parmer’s dedicated diaphragm or scroll vacuum pump series.
Is CE marking applicable to this unit?
Yes—units shipped to the EU carry CE marking under the Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU), with full technical documentation available upon request.