Micropump A-Mount Gear Pump Head Model 73011-02

Overview

The Micropump A-Mount Gear Pump Head Model 73011-02 is a precision-engineered, magnetically coupled positive displacement pump head designed for continuous, pulseless fluid transfer in demanding analytical, process, and laboratory automation applications. Based on the fundamental principle of external gear meshing within a precisely machined cavity, this pump head delivers highly repeatable volumetric flow rates independent of system backpressure—within its specified differential pressure limit of 300 psi (20.7 bar). Its hermetic magnetic drive eliminates dynamic shaft seals, replacing them with static, chemically resistant barriers that ensure zero leakage and prevent cross-contamination between drive and fluid paths. This architecture is particularly critical in applications requiring strict containment of hazardous, toxic, or high-purity fluids—including pharmaceutical intermediate transfer, semiconductor chemical delivery, and environmental sample handling where regulatory compliance mandates leak-free operation.

Key Features

• Magnetically coupled drive system with static PTFE and PEEK seals—no mechanical shaft penetration, eliminating seal wear and fugitive emissions.
• Cavity-style design optimized for elevated inlet pressure tolerance (up to 24″ H₂O lift at 1750 rpm), enabling reliable priming and stable suction under variable head conditions.
• Modular A-Mount interface allows direct integration with Micropump’s family of brushless DC and stepper motor drivers, supporting speed control from 0 to 10,000 rpm with <±0.5% speed regulation accuracy.
• Wetted components constructed from 316 stainless steel, PEEK, and PTFE—providing broad chemical compatibility across organic solvents, acids, bases, and halogenated media (consult chemical resistance chart per application).
• Reversible operation (no internal bypass installed) with bidirectional flow capability—ideal for recirculation loops, titration systems, and dual-path fluidic manifolds.
• Compact footprint (2.1″ × 1.9″ × 1.4″) and tool-free access to core components enable rapid field maintenance using the included repair kit (gears, suction block, shaft seals, and springs).

Sample Compatibility & Compliance

The 73011-02 pump head is compatible with Newtonian and mildly shear-thinning fluids in the viscosity range of 0.2–1500 cP. Its performance remains stable across temperature extremes from –43°C to +54°C, making it suitable for ambient lab environments and controlled cold-room or heated manifold installations. All wetted materials comply with USP Class VI and FDA 21 CFR 177.2470 for repeated food-contact and pharmaceutical use. The absence of lubricants in the fluid path and non-metallic sealing surfaces meet stringent requirements for low-metal leachate applications (e.g., ICP-MS sample introduction, ultrapure water recirculation). While not certified to ATEX or IECEx standards, the pump head may be integrated into intrinsically safe systems when paired with appropriately rated motor drivers and enclosures.

Software & Data Management

As a component-level device, the 73011-02 does not include embedded firmware or onboard communication protocols. However, when mounted on Micropump-compatible drivers (e.g., M1000 series), it supports analog 0–10 VDC or 4–20 mA speed input, as well as digital RS-485 Modbus RTU commands. Integration with LabVIEW, MATLAB, or Python-based control platforms is achieved via standard industrial I/O modules. Audit trails, calibration logs, and operational history are maintained externally by host supervisory systems—enabling full alignment with GLP/GMP documentation practices, including electronic signature support and 21 CFR Part 11-compliant data integrity frameworks when deployed with validated software stacks.

Applications

• Continuous reagent dosing in automated wet chemistry analyzers (e.g., discrete analyzers, flow injection systems)
• High-precision solvent delivery in HPLC auxiliary loops and column cleaning manifolds
• Chemical metering in electroplating bath replenishment and etch process control
• Low-flow sampling for online UV-Vis or conductivity monitoring in purified water distribution systems
• Recirculation of aggressive cleaning agents (e.g., piranha, SC-1) in semiconductor fab tool sub-systems
• Calibration fluid transfer in gas chromatography carrier gas humidification modules

FAQ

Is the 73011-02 pump head self-priming?
Yes—its cavity-style design provides up to 24 inches of water column suction lift at 1750 rpm, supporting reliable dry-start priming in open-tank configurations.
Can this pump head handle abrasive slurries?
No—this model is intended for clean, particle-free liquids; suspended solids exceeding 5 µm may accelerate gear wear and compromise seal integrity.
What is the recommended maintenance interval?
Under continuous operation at ≤70% of max speed and within specified temperature/viscosity limits, inspection and seal replacement are advised every 6,000 operating hours or annually—whichever occurs first.
Does the internal bypass affect flow accuracy?
When installed, the bypass diverts up to 15% of flow at maximum pressure; for metrology-critical applications, use the non-bypass variant (73011-00) and regulate pressure externally.
Is electrical grounding required for the pump head body?
Yes—ground the 316 SS housing directly to the motor driver chassis to prevent electrostatic accumulation, especially when conveying flammable solvents.