Vacuubrand MZ 2C EX / MD 4C EX / MV 10C EX Series ATEX-Certified Chemical-Resistant Explosion-Proof Diaphragm Vacuum Pumps

Overview

The Vacuubrand MZ 2C EX, MD 4C EX, and MV 10C EX series represent a family of chemically resistant, explosion-proof diaphragm vacuum pumps engineered for safe and reliable operation in hazardous laboratory and pilot-scale process environments where flammable vapors, solvents, or reactive gases are present. These pumps operate on the principle of positive displacement via PTFE-coated multi-layer elastomer diaphragms, driven by an oil-free, maintenance-free eccentric shaft mechanism. Unlike rotary vane or scroll pumps, diaphragm technology eliminates internal lubrication, preventing contamination of the vacuum line and ensuring compatibility with aggressive chemical media—including chlorinated hydrocarbons, acetone, ethyl acetate, and low-boiling esters. Each model is certified to the ATEX Directive 2014/34/EU for use in Zone 1 and Zone 2 explosive atmospheres, with distinct classification zones defined for both the pumped gas stream (II 2G IIC T3 X) and motor housing (II 2G EEx d IIB T4). The modular design allows integration of optional accessories—such as the AK adsorption kit for solvent vapor recovery and EK exhaust condensation unit—to extend chemical service life and reduce environmental emissions.

Key Features

• ATEX-certified explosion protection for both pump head and drive motor, compliant with EN 60079-0, EN 60079-1, and EN 60079-26 standards
• Chemically inert wetted parts: PTFE-coated diaphragms, Viton® valves, EPDM seals, and stainless steel (1.4404/316L) pump bodies
• Oil-free, dry-running operation—no risk of backstreaming, oil mist, or cross-contamination in sensitive applications such as lyophilization, distillation, or glovebox evacuation
• Multi-stage configurations: 2-stage (MZ), 3-stage (MD), and 4-stage (MV) architectures enable optimized trade-offs between ultimate vacuum performance and volumetric throughput
• Integrated gas ballast valve for controlled admission of inert purge gas (e.g., N₂), improving tolerance to condensable vapors and extending diaphragm service intervals
• Robust cast aluminum housing with vibration-dampening feet and IP54-rated electrical enclosure for stable benchtop or mobile cart mounting

Sample Compatibility & Compliance

These pumps are validated for continuous duty with corrosive, condensable, and potentially ignitable process gases encountered in organic synthesis, pharmaceutical crystallization, and analytical sample preparation workflows. They meet ISO 8573-1 Class 4 purity requirements for compressed air–equivalent vacuum quality (particulate, water, oil content). All models comply with EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. Documentation packages include full EU Declaration of Conformity, ATEX test reports from notified body PTB (Physikalisch-Technische Bundesanstalt), and material safety data sheets (MSDS) for all wetted components. For GLP/GMP-regulated laboratories, traceable calibration certificates (per ISO/IEC 17025) and audit-ready maintenance logs are supported via optional service contracts.

Software & Data Management

While inherently analog in control architecture, the EX-series pumps support integration into centralized vacuum management systems via 0–10 V analog input/output interfaces (available on AK/EK-equipped variants). Optional digital controllers (e.g., Vacuubrand VACUU·SELECT) provide real-time monitoring of inlet pressure, motor current draw, and runtime hours—enabling predictive maintenance scheduling. All firmware and configuration data adhere to IEC 62443-3-3 security guidelines. Audit trails for parameter changes and operational events can be exported in CSV format for 21 CFR Part 11–compliant record retention when paired with validated LabVantage or STARLIMS middleware.

Applications

• Safe vacuum generation for rotary evaporation of flammable solvents (e.g., diethyl ether, hexane, THF) under ATEX-compliant fume hood or ventilated enclosure conditions
• Continuous vacuum supply to freeze dryers handling thermolabile APIs, where oil-free operation prevents residual hydrocarbon contamination per USP and
• Evacuation of inert-atmosphere gloveboxes (N₂ or Ar) during catalyst handling or moisture-sensitive reagent synthesis
• Support vacuum for gas chromatography sample introduction systems requiring high chemical resistance to septum bleed or column bleed compounds
• Process vacuum in small-scale continuous flow reactors where explosion risk exists due to exothermic chemistry or volatile intermediate accumulation

FAQ

What ATEX zones are covered by the MZ 2C EX pump head?
The pump chamber is certified for Zone 1 (II 2G IIC T3 X), permitting use where explosive gas atmospheres are likely to occur in normal operation.
Can these pumps handle hydrogen chloride or sulfur dioxide?
Yes—when equipped with optional Hastelloy C-276 valve plates and fluorosilicone diaphragms (special order), compatibility extends to strongly acidic, oxidizing, and halogenated gases per ASTM D471 testing protocols.
Is routine calibration required for regulatory compliance?
No mandatory periodic calibration is stipulated; however, verification of ultimate vacuum performance against a traceable reference gauge (e.g., MKS Baratron 627B) is recommended every 12 months for ISO 17025-accredited labs.
How does the AK adsorption kit improve system longevity?
The activated carbon-based AK module captures >95% of solvent vapors upstream of the pump, reducing diaphragm swelling and valve fouling—extending mean time between maintenance (MTBM) by up to 3× in high-solvent-load applications.
Are spare parts available with documented lot traceability?
Yes—VACUUBRAND provides CE-marked replacement kits (diaphragm sets, valve assemblies, gaskets) with full material certifications (EN 10204 3.1), batch numbers, and shelf-life tracking per ISO 9001:2015 clause 8.5.2.