Gardner Denver PTFE-Coated Vacuum and Pressure Pump Model 07CA18TFEL-247

Overview

The Gardner Denver PTFE-Coated Vacuum and Pressure Pump Model 07CA18TFEL-247 is an oil-free, diaphragm-based laboratory pump engineered for precise, contamination-free vacuum and positive pressure generation in chemically demanding environments. Unlike rotary vane or piston pumps, this unit operates on a balanced eccentric diaphragm mechanism—eliminating lubricants from the gas path and ensuring zero hydrocarbon carryover. Its core design principle centers on chemical inertness and operational stability: the PTFE-coated diaphragm, stainless steel valve assemblies, and fluoropolymer-sealed internal components collectively resist aggressive solvents, acids, bases, and halogenated vapors commonly encountered in filtration, solvent evaporation, degassing, and controlled atmosphere applications. With a maximum vacuum of 23.2 inHg (589.3 Torr) and positive pressure capability up to 25 psi (1.72 bar), it bridges the performance gap between basic benchtop aspirators and high-vacuum systems—making it especially suitable for moderate-vacuum processes requiring repeatability, low maintenance, and regulatory compliance.

Key Features

• Chemically inert wetted path comprising PTFE-coated diaphragm and 316 stainless steel valves—validated for compatibility with acetone, methanol, HCl, NaOH, and chloroform per ASTM D543 and ISO 15528
• Low-vibration, dynamically balanced eccentric drive mechanism ensures stable operation on shared optical tables or vibration-sensitive instrumentation benches
• Integrated analog vacuum/pressure gauge and precision needle valve enable real-time manual regulation across both vacuum and pressure modes
• Compact aluminum housing (12.2 × 6.3 × 8.5 in / 310 × 160 × 215 mm) and lightweight construction (< 8.5 kg) facilitate flexible benchtop integration without structural reinforcement
• Oil-free operation eliminates risk of sample contamination and meets USP requirements for pharmaceutical process equipment used in non-sterile API handling
• 65 dB(A) acoustic emission at 1 m distance complies with ISO 7779 and OSHA 29 CFR 1910.95 guidelines for continuous operator exposure in laboratory settings

Sample Compatibility & Compliance

This pump is routinely deployed in GLP-compliant laboratories for vacuum-assisted filtration of corrosive filtrates (e.g., HF-digested geological samples), pressure-driven membrane transfer in blotting workflows, and inert-gas purging of reaction vessels prior to air-sensitive synthesis. Its PTFE/stainless wetted materials conform to FDA 21 CFR 177.1550 (fluoropolymer food-contact compliance) and EU Regulation (EC) No. 1935/2004 for indirect food contact. While not certified for explosive atmospheres (ATEX/IECEx), its spark-free diaphragm actuation and absence of lubricants render it appropriate for Class I, Division 2 environments per NEC Article 500 when installed with proper grounding and ventilation. All electrical components meet UL 61010-1 and CE EN 61010-1 safety standards.

Software & Data Management

As a manually regulated analog device, the 07CA18TFEL-247 does not feature digital control interfaces or embedded firmware. However, its analog gauge output (0–30 inHg / 0–25 psi) is compatible with third-party data acquisition systems via 4–20 mA transducer adapters (e.g., Omega DP25-E). When integrated into validated workflows, users may document operational parameters—including runtime, setpoint stability, and maintenance logs—in accordance with 21 CFR Part 11 Annex 11 requirements using electronic lab notebooks (ELNs) such as LabArchives or Benchling. Calibration records for the integrated gauge (traceable to NIST SRM 2170) must be retained per ISO/IEC 17025 clause 7.7.

Applications

• Vacuum filtration of aggressive aqueous and organic solutions in environmental testing labs (EPA Method 1664, ASTM D5907)
• Controlled-pressure transfer of reagents in automated liquid handlers and microfluidic priming stations
• Evaporative concentration of volatile analytes in GC-MS sample prep without thermal degradation
• Desiccator evacuation and inert gas backfilling in battery material synthesis (Li-ion cathode drying per IEEE 1625)
• Support vacuum for cold traps in rotary evaporation systems where oil contamination must be avoided

FAQ

Is this pump suitable for continuous duty operation?
Yes—it is rated for indefinite intermittent or continuous operation at ambient temperatures ≤ 40°C and relative humidity ≤ 80%, provided adequate airflow around the motor housing is maintained.
Can the vacuum gauge be recalibrated in-house?
The analog Bourdon-tube gauge is factory-calibrated; field recalibration requires NIST-traceable deadweight tester equipment and should be performed by qualified metrology personnel per ISO 17025.
What is the expected service life of the PTFE diaphragm under typical lab use?
Based on accelerated life testing per ASTM F1877, mean time between failures (MTBF) exceeds 12,000 hours at 50% duty cycle with non-abrasive media; replacement kits (Part #79200-20) are available.
Does the pump meet cleanroom ISO Class 5 requirements?
While the pump itself is not classified, its oil-free, particle-shedding–minimized design supports ISO 14644-1 Class 5 environments when installed with HEPA-filtered exhaust ducting and validated particulate monitoring.
Is there a GMP-compliant version with audit trail functionality?
No—the base model is analog-only; for 21 CFR Part 11–compliant digital control, consider pairing it with a standalone programmable controller (e.g., Cole-Parmer Masterflex L/S Digital Drive + pressure transducer module).