The Great Wall VT-2000H Water Vapor Trap
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | VT-2000 |
| Pricing | Upon Request |
Overview
The Great Wall VT-2000H Water Vapor Trap is a cryogenic condensation-based vacuum protection device engineered for reliable removal of water vapor and volatile condensable gases from vacuum systems. Operating on the principle of cold-surface condensation, it functions by maintaining a low-temperature trapping surface—typically via integrated refrigeration or external cryogen coupling—to induce phase transition of vapors into solid or liquid phases before they reach the primary vacuum pump. This significantly reduces pump oil contamination, extends pump service intervals, improves ultimate vacuum stability, and mitigates backstreaming risks. Designed for integration with freeze dryers, rotary evaporators, vacuum ovens, and battery electrode drying lines, the VT-2000H serves both as a dedicated vapor trap and a functional low-temperature bath—supporting pre-freezing, cryo-holding, and controlled condensation workflows in R&D and production environments.
Key Features
- Cryogenic trapping capability with real-time digital temperature monitoring (–40 °C to +20 °C typical operational range, dependent on ambient and load conditions)
- Dual-mode condensation architecture: direct-contact stainless steel trap chamber (304 SS) for aqueous and ethanol-based solvents; optional borosilicate glass cold finger assembly for aggressive media including organic solvents and mild acidic vapors
- Modular design enabling seamless integration into existing vacuum train configurations—compatible with KF, ISO-K, and NW flange standards (adapters available upon request)
- Refrigeration system engineered for continuous duty cycle under variable vapor loads; includes thermal overload protection and condensate level monitoring interface
- Stainless steel housing with insulated cold chamber and front-panel LED display showing setpoint, actual temperature, and system status indicators
- No consumables required—no desiccants, no replaceable cartridges—reducing long-term operational cost and maintenance complexity
Sample Compatibility & Compliance
The VT-2000H accommodates diverse process streams encountered in pharmaceutical lyophilization, battery material processing (e.g., cathode/anode drying), and analytical sample preparation. Its 304 stainless steel trap body meets ASTM A240 requirements for corrosion resistance in neutral-to-moderately polar environments. The optional glass condenser assembly complies with DIN ISO 3585 specifications for borosilicate 3.3 glass, ensuring chemical compatibility with acetone, THF, acetonitrile, and dilute HCl or H₂SO₄ vapors at sub-zero temperatures. While not certified to UL/CE for standalone safety, the unit is designed to operate within IEC 61000-6-2/6-4 electromagnetic compatibility limits and conforms to general laboratory equipment safety guidelines per ISO 13850. It supports GLP-compliant documentation when paired with validated temperature logging systems (e.g., external USB data loggers with NIST-traceable calibration).
Software & Data Management
The VT-2000H operates as a stand-alone hardware unit with embedded microcontroller-based temperature regulation—no proprietary software is required for basic operation. However, its RS-485 serial interface (Modbus RTU protocol) enables integration into centralized vacuum system control platforms. Users may log temperature profiles, trigger vacuum valve sequencing via external PLCs, and archive timestamps for audit trails—facilitating compliance with FDA 21 CFR Part 11 when combined with electronic signature-capable SCADA systems. Optional analog 4–20 mA output supports connection to building management systems (BMS) or distributed control systems (DCS) for facility-wide monitoring.
Applications
- Vacuum-assisted drying of lithium-ion battery electrodes and separator films, where residual moisture must be reduced to <10 ppm prior to cell assembly
- Protection of oil-sealed and dry scroll vacuum pumps during rotary evaporation of heat-sensitive APIs and natural product extracts
- Pre-condensation stage upstream of turbo-molecular pumps in high-vacuum coating systems (e.g., PVD, ALD)
- Low-temperature pre-freezing of samples prior to lyophilization—acting as an auxiliary cold sink synchronized with shelf refrigeration cycles
- Condensation recovery of volatile solvents (e.g., dichloromethane, ethyl acetate) in green chemistry workflows to minimize VOC emissions and support solvent reuse initiatives
FAQ
Can the VT-2000H be used with corrosive acid vapors such as HCl or HF?
The stainless steel trap chamber is not recommended for strong mineral acids. For such applications, the optional glass cold finger configuration must be selected—and even then, exposure should be limited to low-concentration, low-flow-rate streams with adequate ventilation and neutralization downstream.
What is the maximum allowable inlet pressure for safe operation?
The device is rated for continuous operation at inlet pressures up to 50 mbar absolute; operation above this threshold may reduce condensation efficiency and increase thermal load on the refrigeration system.
Is remote monitoring supported out of the box?
Yes—via RS-485 Modbus RTU port. Ethernet or Wi-Fi connectivity requires third-party gateway hardware; no built-in web server or cloud interface is provided.
Does the unit require periodic defrosting or manual condensate removal?
No manual defrosting is needed under normal operation. Condensed liquids accumulate in the bottom of the trap chamber or glass vessel and must be drained manually after each run—or automatically via optional solenoid drain valve kit.
