DRETOP TGM-3085 Diaphragm Vacuum Pump

Overview

The DRETOP TGM-3085 is a compact, oil-free diaphragm vacuum pump engineered for reliable, contamination-free operation in analytical and preparative laboratory environments. Utilizing positive displacement via an elastomeric diaphragm actuated by an eccentric cam mechanism, it achieves dry vacuum generation without lubricants—eliminating oil vapor backstreaming, hydrocarbon contamination, or scheduled oil changes. Its sealed, non-contact pumping chamber ensures consistent performance across variable inlet pressures and intermittent duty cycles. Designed to serve as a primary vacuum source for benchtop instrumentation—including rotary evaporators, vacuum ovens, solid-phase extraction manifolds, distillation setups, and vacuum filtration systems—the TGM-3085 delivers stable suction down to −85 kPa (absolute pressure ≈ 15 kPa), suitable for applications requiring moderate vacuum levels under ambient conditions.

Key Features

• Oil-free operation with PTFE-coated, carbon-fiber-reinforced diaphragm for extended service life and chemical resistance
• Integrated air-cooled exhaust system enabling continuous duty operation without thermal shutdown
• Low-noise motor (≤52 dB[A] at 1 m) with vibration-damped mounting for stable placement on shared lab benches
• Compact footprint (250 × 135 × 210 mm) optimized for space-constrained fume hoods and instrument carts
• No maintenance-intensive consumables: no oil, no filters, no valves—only periodic diaphragm inspection recommended per 6,000–8,000 operating hours
• Motor rated at 160 W, compliant with IEC 60034 efficiency standards; thermally protected against overload and stall conditions

Sample Compatibility & Compliance

The TGM-3085 is compatible with non-corrosive, non-condensable, and low-humidity gas streams typical of solvent evaporation, inert atmosphere purging, and vacuum drying workflows. While not rated for direct handling of aggressive acids (e.g., HCl, HF), halogenated solvents, or high-saturation vapors, its PTFE-wetted path provides robust resistance to alcohols, acetone, ethyl acetate, water vapor, and common organic solvents. The pump conforms to EN 61000-6-3 (EMC emission limits) and EN 61000-6-2 (immunity), carries CE marking for the European Economic Area, and meets general safety requirements per IEC 61010-1 for laboratory electrical equipment. It supports GLP-compliant documentation when integrated into validated systems—though standalone use does not require FDA 21 CFR Part 11 compliance, audit trails may be implemented via external data loggers interfaced through analog output signals (0–10 VDC vacuum feedback optional on custom orders).

Software & Data Management

The TGM-3085 operates as a standalone analog device with manual on/off control via front-panel rocker switch and integrated power cord. No embedded firmware or digital interface is included; however, it features a standard 6 mm barbed inlet port (ISO-KF 16 compatible with optional adapter) and 8 mm outlet port, facilitating integration into automated vacuum control loops. When paired with third-party pressure transducers (e.g., capacitance manometers) and programmable logic controllers (PLCs) or LabVIEW-based acquisition systems, users can implement closed-loop vacuum regulation, runtime logging, and event-triggered shutdown protocols. For routine QC documentation, time-stamped operation logs may be generated externally using USB-connected data loggers monitoring current draw or outlet pressure.

Applications

• Rotary evaporation of heat-sensitive compounds under mild vacuum (e.g., essential oils, pharmaceutical intermediates)
• Vacuum-assisted drying in desiccators and benchtop vacuum ovens (e.g., lyophilization pre-chamber evacuation, polymer film curing)
• Gas removal from reaction vessels prior to inert-gas purging (Schlenk line support)
• Sample preparation workflows: solid-phase extraction (SPE), vacuum filtration of colloidal suspensions, membrane degassing
• Instrument auxiliary vacuum: electron microscopy sample coating systems, residual gas analyzers, small-scale sputtering chambers
• Industrial QA/QC: vacuum leak testing of sealed packaging, HVAC component evacuation during manufacturing

FAQ

Can the TGM-3085 handle solvent vapors from rotary evaporation?
Yes—provided vapors are condensed upstream via efficient cold traps or condensers. Direct exposure to high-volume, uncondensed solvent vapor will accelerate diaphragm wear and reduce ultimate vacuum performance.
Is this pump suitable for vacuum distillation of acidic solutions?
No. Avoid direct pumping of hydrochloric, nitric, or sulfuric acid vapors. Use only with neutral or mildly basic volatile compounds after appropriate trapping.
What is the expected service life of the diaphragm under continuous operation?
Under typical lab usage (4–6 hrs/day, ambient temperature <30°C, relative humidity <60%), the PTFE/carbon-fiber diaphragm maintains functional integrity for ≥6,000 hours. Replacement kits are available directly from DRETOP authorized distributors.
Does the pump include vacuum gauge or pressure control capability?
No. The TGM-3085 is a fixed-speed, manually operated unit. External vacuum gauges and proportional control valves must be added separately for regulated operation.
Can multiple instruments be connected to one TGM-3085 simultaneously?
Yes—via manifold distribution with individual isolation valves. However, total demand must remain within 30 L/min aggregate flow rate at the target operating pressure; oversizing the load will degrade ultimate vacuum and increase cycle times.