VACUUBRAND MV 2 NT Four-Stage Diaphragm Vacuum Pump

Overview

The VACUUBRAND MV 2 NT is a four-stage, oil-free diaphragm vacuum pump engineered for demanding laboratory and pilot-scale applications requiring stable, continuous vacuum generation down to 0.5 mbar (0.4 torr) absolute pressure. Based on the proven Couette-type diaphragm displacement principle, it delivers high volumetric throughput across its entire operating range — including near ultimate vacuum — without introducing hydrocarbon contamination or requiring lubricants. Its robust architecture integrates precision-machined aluminum and stainless-steel wetted components with chemically resistant, FKM-reinforced dual-layer diaphragms, ensuring long-term reliability when handling non-corrosive gases and vapors. Designed and manufactured in Germany to stringent DIN EN ISO 9001 quality standards, the MV 2 NT meets critical operational requirements for GLP-compliant environments, inert atmosphere glove boxes, solvent evaporation systems, vacuum filtration, freeze drying pre-vacuum stages, and analytical instrument sample preparation.

Key Features

• Four-stage diaphragm design optimized for high ultimate vacuum (0.5 mbar abs.) and sustained pumping speed up to 2.4 m³/h at 60 Hz
• Fiber-reinforced, dual-layer FKM diaphragms providing exceptional elasticity, chemical resistance, and extended service life — typically exceeding 10,000 operating hours under standard conditions
• Oil-free, particle-free operation eliminating risk of backstreaming, cross-contamination, or downstream system fouling — essential for mass spectrometry, electron microscopy, and ultra-high-purity synthesis workflows
• Low-vibration, low-noise operation (50 dBA at 50 Hz) achieved through balanced motor dynamics, integrated vibration-damping feet, and acoustic muffler-equipped exhaust path
• Sealed, maintenance-free induction motor with Class F insulation and IP 40 protection — rated for continuous duty within ambient temperatures from 10 °C to 40 °C
• KF DN 16 inlet flange and G1/4″ threaded exhaust port with integrated silencer — compatible with standard vacuum tubing, valves, and gauges per ISO-KF and ISO 228-1 specifications

Sample Compatibility & Compliance

The MV 2 NT is validated for use with non-aggressive, non-condensable, and mildly polar gases — including air, nitrogen, argon, helium, and water vapor below saturation limits. It is not intended for use with corrosive media (e.g., HCl, Cl₂, NH₃), halogenated solvents, or highly condensable vapors without cold trap integration. All wetted materials comply with FDA 21 CFR §177.2600 for indirect food contact and meet RoHS Directive 2011/65/EU restrictions on hazardous substances. The pump carries NRTL certification for safety compliance in both U.S. (UL 61010-1) and Canadian (CAN/CSA-C22.2 No. 61010-1) markets. For installations in potentially explosive atmospheres, the 230 V version conforms to ATEX Directive 2014/34/EU (Category II 3G, Zone 2, Gas Group IIC, Temperature Class T3), certified exclusively for internal atmospheric use.

Software & Data Management

While the MV 2 NT operates as a standalone analog device without embedded digital control or firmware, it is fully compatible with external vacuum monitoring and automation systems via standard analog interfaces. Optional analog output modules (e.g., 0–10 V or 4–20 mA pressure feedback signals) can be integrated using third-party vacuum controllers such as VACUUBRAND’s RC 6 series or industrial PLCs supporting Modbus RTU protocols. All documentation — including CE Declaration of Conformity, ATEX Certificate of Conformity, and detailed technical manuals — is provided in English and archived in PDF format compliant with ISO 15223-1 for medical device labeling traceability. Audit-ready calibration records and maintenance logs may be maintained in accordance with ISO/IEC 17025 and FDA 21 CFR Part 11 guidelines when paired with validated electronic lab notebook (ELN) platforms.

Applications

• Pre-evacuation and roughing stages for rotary vane and turbomolecular pumps in high-vacuum systems
• Vacuum-assisted filtration and degassing of aqueous and organic solutions in pharmaceutical QC labs
• Controlled atmosphere drying of heat-sensitive biomolecules and APIs under inert gas blankets
• Sample preparation for GC-MS, LC-MS, and ICP-MS instrumentation requiring contaminant-free vacuum manifolds
• Operation of vacuum desiccators, Schlenk lines, and small-scale lyophilizers in academic research settings
• Integration into automated synthesis reactors where repeatable vacuum cycling and zero oil carryover are mandatory

FAQ

Is the MV 2 NT suitable for use with aggressive solvents such as acetone or chloroform?
No — the pump is designed for non-corrosive, non-condensable gases only. Aggressive or highly condensable vapors require upstream cold traps or alternative pump technologies (e.g., chemically resistant scroll or dry screw pumps).
Does the MV 2 NT include an integrated vacuum gauge or pressure controller?
No — it is a dedicated vacuum generation unit. External vacuum measurement and regulation must be implemented using compatible analog or digital gauges (e.g., Pirani or capacitance manometers) and control relays.
What is the expected service interval for diaphragm replacement?
Under typical laboratory usage (8 h/day, 5 days/week, ambient temperature ≤30 °C), FKM diaphragms maintain functional integrity beyond 10,000 hours; replacement is condition-based and guided by performance decline or visual inspection per VACUUBRAND Service Manual SM-MV2NT-EN.
Can the MV 2 NT be operated continuously for 24/7 applications?
Yes — its sealed motor, thermal overload protection, and robust mechanical design support uninterrupted operation within specified environmental limits (10–40 °C ambient, ≤80% RH non-condensing).
Is the pump compatible with vacuum chambers requiring leak rates below 1×10⁻⁴ mbar·L/s?
The MV 2 NT achieves intrinsic leak-tightness <5×10⁻⁵ mbar·L/s (helium test, ISO 20484), making it suitable as a primary pump for chambers meeting this specification — provided all system joints, seals, and feedthroughs are similarly rated.