The Great Wall VT-2000L Cryogenic Vapor Trap

Overview

The Great Wall VT-2000L Cryogenic Vapor Trap is a high-performance, laboratory-grade cold trap engineered for reliable condensation and removal of solvent vapors—including water, ethanol, acetone, and other volatile organic compounds—during vacuum drying, lyophilization, rotary evaporation, and low-pressure concentration processes. Operating on the principle of cryogenic condensation, the VT-2000L achieves a no-load minimum temperature of −80 °C using a dual-refrigerant cascade system (R404A/R23), enabling efficient capture of high-volatility species that would otherwise bypass conventional mechanical pumps or degrade pump oil integrity. Its integrated stainless-steel trap chamber (AISI 304, grade 06Cr19Ni10) provides chemical resistance to aqueous and alcoholic systems, while an optional borosilicate glass cold finger extends compatibility to acidic and aggressive organic media. Designed for integration with vacuum ovens, glove boxes, battery electrode drying lines, and capacitor manufacturing environments, the VT-2000L enhances ultimate vacuum stability, extends vacuum pump service life, and mitigates atmospheric emissions in compliance with ISO 14001-aligned environmental stewardship practices.

Key Features

• Cascade refrigeration architecture delivering stable −80 °C operation with precise digital temperature control via Pt100 sensor and intuitive front-panel interface
• Dual trapping configurations: direct-contact stainless-steel chamber (for water/ethanol) or removable glass cold finger (for HCl, acetic acid, THF, DMF, and other corrosive or high-boiling solvents)
• Robust 304 stainless-steel construction with electropolished interior surface, ensuring corrosion resistance, cleanability, and long-term dimensional stability under thermal cycling
• Integrated safety suite including compressor delay logic, real-time current monitoring, and thermal cutoff at critical junctions—fully compliant with IEC 61010-1 safety requirements
• Optimized thermal insulation and low-heat-leak design minimize energy consumption while maintaining consistent cold zone integrity across ambient conditions (5–35 °C, ≤70% RH)
• Modular vacuum interface with standardized 12-mm OD flexible hose connection, compatible with common vacuum tubing standards (ISO-KF, NW16, and custom flange adapters available upon request)

Sample Compatibility & Compliance

The VT-2000L supports broad-spectrum solvent handling across pharmaceutical, electrochemical, and materials science workflows. Its stainless-steel chamber is validated for repeated use with water, methanol, ethanol, isopropanol, and ethyl acetate. When equipped with the optional glass cold finger, it accommodates hydrochloric acid fumes, nitric acid vapors, trifluoroacetic acid, N-methyl-2-pyrrolidone (NMP), and dimethyl sulfoxide (DMSO)—all without degradation of trapping efficiency. The unit meets CE marking requirements per Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. Its sealed refrigeration circuit complies with F-Gas Regulation (EU) No. 517/2014. For GMP-regulated environments, optional audit-trail-capable firmware (with timestamped temperature logs and user access controls) supports alignment with FDA 21 CFR Part 11 and EU Annex 11 data integrity expectations.

Software & Data Management

While the base VT-2000L operates via standalone digital controller with LED display, optional RS485 Modbus RTU interface enables integration into centralized lab automation platforms (e.g., LabVantage, Thermo Fisher SampleManager). Logged parameters—including setpoint, actual chamber temperature, compressor status, and runtime hours—are exportable as CSV files for QA documentation. Firmware updates are performed via secure USB port; all configuration changes are recorded with operator ID and timestamp where enabled. Remote monitoring capability (via optional Ethernet gateway) supports predictive maintenance alerts based on thermal load trends and compressor cycle analysis—critical for continuous battery-drying production lines requiring >99.5% uptime.

Applications

• Vacuum drying of lithium-ion battery cathode/anode coatings, separator films, and solid-state electrolyte layers—reducing residual moisture to <10 ppm per ASTM D1642
• Pre-freezing and primary drying stages in pharmaceutical lyophilization cycles, particularly for heat-sensitive biologics requiring sub-zero condensation prior to chamber evacuation
• Solvent recovery during rotary evaporation of natural product extracts, minimizing VOC discharge and supporting ISO 50001 energy management systems
• Gas-phase purification in thin-film deposition chambers (e.g., ALD, PVD), where water vapor partial pressure must remain below 1×10⁻⁶ mbar for stoichiometric film growth
• Environmental testing labs performing accelerated aging of encapsulated electronics, where controlled dew-point suppression prevents condensation-induced failure modes

FAQ

What is the recommended maintenance interval for the VT-2000L’s refrigeration system?
Annual inspection of refrigerant charge, oil level, and condenser coil cleanliness is advised. Compressor oil should be replaced every 3 years or after 10,000 operating hours—whichever occurs first—using OEM-specified polyolester (POE) lubricant.
Can the VT-2000L be operated continuously at −80 °C?
Yes, continuous operation is supported under rated ambient conditions (≤30 °C, ≤60% RH); however, sustained full-load operation above 85% duty cycle requires auxiliary ventilation to prevent condenser overheating.
Is the glass cold finger supplied with O-rings and mounting hardware?
Yes, each optional glass cold finger includes Viton® gaskets, stainless-steel clamps, and calibrated centering spacers to ensure leak-tight installation and optimal thermal contact with the cold head.
Does the VT-2000L meet explosion-proof requirements for solvent-rich environments?
The standard unit is rated for Class I, Division 2 (non-hazardous location); ATEX-certified variants with intrinsically safe controls and purged enclosures are available under custom order (certification documentation provided upon request).