Great Wall MP-201Z Diaphragm Vacuum Pump

Overview

The Great Wall MP-201Z is a compact, oil-free diaphragm vacuum pump engineered for reliable, contamination-free negative pressure generation in analytical and preparative laboratory workflows. Based on positive displacement via elastomeric diaphragm oscillation, it operates without lubricating oil—eliminating risk of hydrocarbon backstreaming, vapor contamination, or sample degradation. This makes it especially suitable for applications demanding chemical compatibility and process integrity, including rotary evaporation, vacuum distillation, freeze-drying, crystallization, sublimation, and pressure-sensitive filtration. Its sealed, corrosion-resistant fluid path accommodates aggressive media such as concentrated acids, caustic bases, halogenated solvents, and moderately volatile organic compounds—provided appropriate inlet traps and exhaust scrubbing are implemented per safety protocols.

Key Features

• Oil-free operation ensures zero hydrocarbon emission and eliminates routine oil changes, reducing maintenance overhead and downtime.
• Chemically resistant PTFE-coated diaphragm and stainless-steel valve assembly provide long-term stability when handling corrosive vapors and condensates.
• Integrated thermal protection circuit automatically de-energizes the motor if internal temperature exceeds safe operational thresholds, enhancing equipment longevity and lab safety.
• Low-vibration, brushless AC motor (180 W, 1300 rpm) delivers consistent pumping performance with minimal mechanical noise (<55 dB(A) at 1 m).
• Compact footprint (300 × 230 × 170 mm) and lightweight design (10 kg) enable flexible benchtop integration—even in space-constrained fume hoods or modular lab setups.
• Standard Ø6 mm inlet port accepts common vacuum tubing (e.g., silicone, Viton®, or reinforced PVC), supporting rapid system connection and leak-tight sealing via compression fittings.

Sample Compatibility & Compliance

The MP-201Z is compatible with non-particulate, non-condensable, and low-to-moderate vapor-load applications. It is not intended for continuous duty with high-volume condensable vapors (e.g., water-rich steam or solvent-laden air without cold trap), nor for handling abrasive particulates or polymerizing monomers. When used with appropriate upstream filtration (e.g., glass fiber or sintered metal traps) and downstream neutralization (e.g., acid gas scrubbers), it meets general-purpose requirements under ISO 8573-1:2010 Class 4 for compressed air purity—and aligns with GLP-compliant vacuum sourcing practices where trace hydrocarbon exclusion is mandated. While not certified to ATEX or IECEx standards, its intrinsic safety profile supports use in non-classified laboratory zones per NFPA 45 and local institutional EHS guidelines.

Software & Data Management

The MP-201Z operates as a standalone analog device with no embedded microcontroller, digital interface, or data logging capability. Its control architecture relies on manual mains switching and passive thermal cutoff—intentionally designed for robustness, electromagnetic immunity, and long-term serviceability in environments where firmware updates or network connectivity pose reliability or cybersecurity concerns. For labs requiring audit-trail documentation, integration into validated systems (e.g., LIMS or ELN) is achieved externally via pressure transducer feedback loops or PLC-monitored power state signals. No software drivers, cloud services, or FDA 21 CFR Part 11-compliant electronic records are provided or required.

Applications

• Vacuum-assisted rotary evaporation of heat-sensitive compounds (e.g., natural product isolates, pharmaceutical intermediates).
• Short-path and fractional distillation under reduced pressure to lower boiling points and minimize thermal decomposition.
• Lyophilization pre-freezing and primary drying stages where stable, low-flow vacuum is critical for ice sublimation kinetics.
• Gravity or Buchner filtration of corrosive filtrates (e.g., HCl digests, NaOH washes) without pump oil carryover.
• Gas evacuation in Schlenk line manifolds during inert-atmosphere synthesis preparation (when paired with appropriate gas ballast and purge protocols).
• Support vacuum for small-scale vacuum ovens, desiccators, and degassing chambers in materials science and polymer laboratories.

FAQ

Is the MP-201Z suitable for continuous 24/7 operation?
No—it is rated for intermittent duty (maximum 6 hours cumulative runtime per day) to maintain diaphragm elasticity and thermal equilibrium.
Can it be used with organic solvents like acetone or chloroform?
Yes, provided a cold trap is installed upstream to prevent solvent condensation in the pump chamber; prolonged exposure to unsaturated vapors may accelerate diaphragm aging.
What is the expected service life of the diaphragm under normal lab use?
Typical diaphragm replacement interval is 6,000–8,000 operating hours, depending on chemical exposure frequency and ambient temperature conditions.
Does it meet CE or UL safety certification requirements?
The unit complies with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity); full CE marking applies to the power supply module, but full-system certification is not held.
How should exhaust gases be managed when pumping toxic or acidic vapors?
Always vent exhaust through a dedicated scrubber system or fume hood duct—never into unventilated spaces—to ensure compliance with OSHA PELs and local environmental regulations.