The Great Wall MP-201Z Diaphragm Vacuum Pump
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | MP-201Z |
| Pump Type | Diaphragm Vacuum Pump |
| Oil-Free Design | Yes |
| Ultimate Vacuum | 8 mbar (0.0992 MPa) |
| Pumping Speed | 25 L/h (0.417 L/min) |
| Motor Power | 180 W |
| Input Voltage/Frequency | 220–240 V~, 50 Hz |
| Motor Speed | 1300 rpm |
| Inlet Port Diameter | Ø6 mm |
| Dimensions (W×D×H) | 300 × 230 × 170 mm |
| Net Weight | 10 kg |
Overview
The Great Wall MP-201Z Diaphragm Vacuum Pump is a compact, oil-free laboratory vacuum source engineered for reliable operation in chemically demanding environments. Utilizing a corrosion-resistant PTFE-coated diaphragm and stainless steel valve assembly, it generates stable negative pressure through positive displacement without lubricating oil—eliminating risk of hydrocarbon contamination, oil backstreaming, or maintenance-intensive oil changes. Its ultimate vacuum capability of 8 mbar (0.0992 MPa) and continuous pumping speed of 25 L/h (0.417 L/min) make it suitable for low-to-moderate vacuum applications including rotary evaporation, vacuum filtration, solvent recovery, freeze drying support, and inert atmosphere purging. Designed for compatibility with aggressive media, the pump safely handles vapors and gases from acidic, alkaline, halogenated, and moderately volatile organic compounds—enabling use in synthetic chemistry, pharmaceutical QC, environmental sample preparation, and materials science workflows where chemical resistance and operational safety are critical.
Key Features
- Chemically resistant wetted parts: PTFE-coated diaphragm, EPDM or Viton® valves (model-dependent), and stainless steel inlet/outlet fittings ensure long-term stability when exposed to corrosive vapors.
- Oil-free operation eliminates cross-contamination risks and complies with ISO 8573-1 Class 0 air purity requirements for vacuum lines supplying analytical instrumentation.
- Thermally protected 180 W induction motor provides consistent torque across voltage fluctuations (220–240 V~, 50 Hz) and features built-in thermal cut-off for overload safety.
- Compact footprint (300 × 230 × 170 mm) and lightweight design (10 kg) facilitate benchtop integration, mobile cart mounting, or placement inside fume hoods.
- Quiet operation (<55 dB(A) at 1 m) minimizes acoustic interference in shared lab spaces and supports extended unattended runs.
- Modular construction enables field-replaceable diaphragms and valves—reducing downtime and total cost of ownership over multi-year service life.
Sample Compatibility & Compliance
The MP-201Z is validated for intermittent duty cycles with non-condensable gases and low-vapor-pressure solvents (e.g., acetone, methanol, ethyl acetate, dichloromethane). It is not rated for continuous pumping of high-boiling-point solvents (e.g., DMSO, glycerol), water vapor loads exceeding 10 g/h, or explosive atmospheres per ATEX/IECEx directives. While not intrinsically safe, its spark-free motor and static-dissipative housing meet general laboratory electrical safety standards (IEC 61010-1). For GLP/GMP-regulated environments, the pump supports traceable operation when paired with external vacuum controllers featuring audit-trail-capable logging (e.g., compatible with LabVIEW™ or custom SCADA interfaces).
Software & Data Management
As a standalone mechanical vacuum source, the MP-201Z operates without embedded firmware or digital control interface. However, its analog 220–240 V~ input allows seamless integration into centralized lab automation systems via external solid-state relays or vacuum controllers (e.g., VAT or MKS series). When used with programmable vacuum manifolds or PID-regulated evaporators, real-time pressure feedback and duty-cycle modulation can be implemented using standard 0–10 V or 4–20 mA signal protocols. No proprietary software or driver installation is required.
Applications
- Rotary evaporation under reduced pressure for heat-sensitive compound isolation
- Vacuum-assisted gravity or pressure filtration of corrosive precipitates (e.g., metal hydroxides, sulfides)
- Desiccation and lyophilization pre-chamber evacuation
- Gas scavenging in Schlenk line manifolds and glovebox antechambers
- Sample degassing prior to HPLC, GC, or ICP-MS analysis
- Thin-film deposition system roughing pumps (as secondary stage)
FAQ
Is the MP-201Z suitable for continuous 24/7 operation?
No—it is rated for intermittent duty (max. 60% duty cycle); continuous operation may accelerate diaphragm fatigue and reduce service life.
Can this pump handle water vapor from aqueous solutions?
Yes, but condensation must be intercepted upstream using a cold trap or moisture-absorbing inline filter to prevent diaphragm swelling and valve adhesion.
Does it comply with FDA 21 CFR Part 11 for electronic records?
Not natively—the pump lacks digital controls or audit trail functionality; compliance requires integration with validated third-party control hardware and software.
What maintenance intervals are recommended?
Diaphragm and valve inspection every 500 operating hours; replacement advised at 1,000–1,500 hours depending on chemical exposure profile and duty cycle.
Is external cooling required?
No—passive convection cooling is sufficient under nominal load; however, ambient temperature should remain below 35°C for optimal performance and longevity.
