Hanuo 2XZ-2 Rotary Vane Vacuum Pump

Overview

The Hanuo 2XZ-2 is a compact, oil-lubricated rotary vane vacuum pump engineered for reliable rough vacuum generation in laboratory and light industrial environments. Based on the classic Couette-type rotary vane principle, it achieves vacuum by rotating an eccentrically mounted rotor with sliding vanes inside a cylindrical stator chamber—creating variable-volume compression cycles that expel gas through the exhaust port. With a nominal pumping speed of 2 L/s and an ultimate pressure of 6 × 10⁻² Pa (5 × 10⁻⁴ Torr), the 2XZ-2 serves as a primary vacuum source for applications requiring low-to-medium vacuum levels (10⁵ to 10⁻² Pa range). It is commonly deployed as a forepump for high-vacuum systems—including diffusion pumps, turbomolecular pumps, and titanium sublimation pumps—as well as a standalone unit for vacuum drying ovens, freeze dryers, vacuum impregnation, and vacuum packaging setups in research labs, electronics manufacturing, and pharmaceutical R&D facilities.

Key Features

• Compact footprint and lightweight design (20 kg net weight) facilitate benchtop integration and mobility across lab workstations.
• Integrated gas ballast valve enables controlled admission of atmospheric air during operation, allowing continuous removal of condensable vapors—particularly low-concentration water vapor—without oil degradation.
• Automatic anti-backstreaming check valve prevents oil backflow into the vacuum chamber upon shutdown, eliminating post-pump contamination and ensuring system integrity during idle periods.
• Cast-iron pump body and precision-ground vanes ensure mechanical stability and long-term dimensional consistency under repeated thermal cycling.
• Single-phase 220 V AC motor with 370 W rated power delivers consistent torque at 1400 rpm, optimized for energy-efficient operation during extended duty cycles.
• No external cooling required; self-contained air-cooling design meets ISO 8573-1 Class 4 particulate and Class 3 oil aerosol specifications for general-purpose vacuum service.

Sample Compatibility & Compliance

The 2XZ-2 is compatible with non-corrosive, non-explosive, and non-particulate-laden gases typical of ambient air, nitrogen, argon, and dried process gases. It is not suitable for halogenated solvents, strong oxidizers (e.g., O₃, Cl₂), or acidic vapors without prior condensation or chemical trapping. While not certified to specific ISO/IEC 17025 or FDA 21 CFR Part 11 requirements—given its role as a utility device rather than a measurement instrument—the pump conforms to GB/T 19956.1–2005 (Chinese National Standard for Rotary Vane Vacuum Pumps) for performance, noise (<65 dB(A) at 1 m), and safety. Its construction supports GLP-aligned lab workflows when used in conjunction with validated vacuum-dependent instruments (e.g., mass spectrometers, electron microscopes, and lyophilizers), provided appropriate upstream filtration and exhaust treatment are implemented per institutional EHS protocols.

Software & Data Management

As a mechanically actuated utility pump, the Hanuo 2XZ-2 operates without embedded firmware, digital interfaces, or data logging capabilities. It functions as an analog, manually controlled component within larger vacuum systems. Integration with supervisory control systems (e.g., PLCs or LabVIEW-based DAQ platforms) requires optional external sensors (vacuum gauge, current monitor, temperature probe) and relay-based start/stop modules. No proprietary software, cloud connectivity, or audit trail functionality is provided—consistent with IEC 61000-6-2/6-4 immunity and emission standards for industrial equipment in non-critical infrastructure settings.

Applications

• Pre-evacuation of vacuum chambers prior to high-vacuum pumping in surface science and thin-film deposition labs.
• Routine vacuum degassing of resins, adhesives, and casting compounds in materials engineering laboratories.
• Supporting vacuum-assisted sample preparation for SEM, TEM, and XRD instrumentation.
• Vacuum drying of hygroscopic chemicals, biological samples, and polymer films under controlled thermal conditions.
• Maintenance of vacuum integrity in refrigeration system diagnostics and HVAC service carts.
• Backing pumps for rotary evaporators and vacuum concentrators in analytical chemistry and natural product isolation workflows.

FAQ

Can the 2XZ-2 be used with aggressive solvents such as acetone or chloroform?
No. The pump’s nitrile rubber seals and mineral oil lubricant are incompatible with most organic solvents. Use only with non-condensable, non-reactive gases unless fitted with solvent-resistant seals and a dedicated cold trap.
Is an exhaust filter included or recommended?
An optional oil mist separator is available as an accessory to reduce hydrocarbon emissions and meet local ventilation code requirements—especially in shared lab environments.
What maintenance intervals are recommended for continuous operation?
Oil should be replaced every 500 operating hours or quarterly—whichever occurs first. Vane inspection and replacement are advised after 3,000–5,000 hours, depending on duty cycle and gas load.
Does the pump require a dedicated electrical circuit?
A standard 16 A grounded outlet is sufficient; however, voltage stability within ±10% of 220 V is essential to prevent motor overheating and premature bearing wear.
Can it be mounted vertically or inverted?
No. The 2XZ-2 must be operated in its designated horizontal orientation to ensure proper oil distribution and vane lubrication. Deviation may cause rapid wear or seizure.