ROCKER Rocker910C PTFE-Coated Corrosion-Resistant Diaphragm Vacuum Pump

Overview

The ROCKER Rocker910C is an oil-free diaphragm vacuum pump engineered for precision and chemical resilience in demanding laboratory environments. Designed around a robust dry-running diaphragm mechanism, it eliminates the need for lubricating oil—thereby preventing oil vapor backstreaming, sample contamination, and routine maintenance associated with traditional rotary vane pumps. Its core corrosion resistance stems from a uniform PTFE coating applied to all gas-path components—including the diaphragm, pump chamber walls, and valve plates—combined with FKM (fluoroelastomer) valve flaps, ensuring compatibility with aggressive solvents such as acetone, chloroform, acetonitrile, methanol, and dilute acids and bases. The pump operates at a nominal voltage of 220 V AC / 50 Hz, delivering a stable ultimate vacuum of 25 mbar (abs) and a maximum continuous flow rate of 31 L/min under standard conditions. Its compact footprint (37 × 13 × 21 cm) and lightweight construction (6.8 kg) enable seamless integration onto fume hoods, benchtop filtration manifolds, or modular purification systems.

Key Features

• PTFE-coated wetted parts and FKM valves for broad chemical compatibility and long-term integrity in solvent-intensive applications
• Oil-free operation ensures zero hydrocarbon contamination—critical for HPLC sample preparation, mass spectrometry support, and pharmaceutical process development
• Integrated vacuum pressure regulator allows precise, stepless control of suction force without external throttling valves
• Factory-installed borosilicate glass safety trap (with anti-suckback design) mitigates risk of liquid ingress during vacuum filtration or evaporation
• Dual-stage mechanical balancing and high-damping rubber feet reduce operational vibration and acoustic emission to ≤60 dB(A), supporting quiet, stable benchtop use
• Thermal overload protection circuit automatically interrupts power when internal motor temperature exceeds safe thresholds, then resumes operation after passive cooling
• Compliant with EU Machinery Directive 2006/42/EC, Electromagnetic Compatibility Directive 2014/30/EU, and RoHS 2011/65/EU; certified to UKCA and CE standards

Sample Compatibility & Compliance

The Rocker910C is validated for use with aqueous, organic, and mildly corrosive vapors encountered in routine analytical and preparative workflows. Its PTFE/FKM material set meets ASTM D471 requirements for elastomer resistance to laboratory solvents and conforms to ISO 8573-1 Class 0 (oil-free air) for compressed gas purity. While not rated for explosive atmospheres (ATEX), its design supports GLP-compliant documentation protocols—particularly when paired with electronic loggers for vacuum stability monitoring. The absence of oil lubrication aligns with USP guidance on analytical instrument qualification, eliminating a major source of system variability in regulated QC labs.

Software & Data Management

As a standalone benchtop vacuum source, the Rocker910C does not incorporate embedded firmware or digital interfaces. However, its analog output stability and mechanical repeatability make it fully compatible with third-party vacuum controllers (e.g., VAT, MKS, or Bronkhorst units) via 0–10 V or 4–20 mA signal integration. Users may record operational parameters—including runtime, duty cycle, and pressure setpoints—using external data acquisition systems compliant with FDA 21 CFR Part 11 when audit trails and electronic signatures are required. All mechanical adjustments (e.g., regulator knob position) are manually calibrated and documented per lab SOPs.

Applications

• Rotary evaporation support under controlled vacuum for heat-sensitive compound isolation
• Gravity and pressure-assisted vacuum filtration of biological samples, precipitates, or particulates through PTFE, nylon, or PVDF membranes
• Solid-phase extraction (SPE) manifold evacuation with consistent flow across multi-well plates
• Solvent degassing prior to HPLC mobile phase preparation or electrochemical cell filling
• Desiccator evacuation and inert-gas purging sequences in moisture-sensitive synthesis
• Connection to cold traps for low-boiling-point solvent recovery in parallel synthesis platforms

FAQ

Is the Rocker910C suitable for continuous 24/7 operation?
Yes—its thermally protected induction motor and self-lubricating PTFE components are rated for uninterrupted duty cycles; however, ambient temperature should remain below 35 °C and ventilation unobstructed.
Can it handle acidic vapors such as HCl or HF?
It tolerates dilute aqueous acid mists but is not recommended for concentrated anhydrous HCl, HF, or oxidizing agents like nitric acid—consult ROCKER’s chemical compatibility chart for specific concentration limits.
Does the included glass trap have volume markings or a drain port?
The standard borosilicate trap is unmarked and lacks a drain valve; optional accessories include graduated traps and inline condensate separators.
What maintenance is required beyond periodic inspection?
No scheduled maintenance is needed; users should visually inspect diaphragm integrity and inlet tubing every 6 months under heavy use, and replace the PTFE-coated diaphragm assembly every 12–18 months depending on duty cycle and chemical exposure.
Is the vacuum regulator calibrated to NIST-traceable standards?
The regulator is factory-set and mechanically referenced—not individually calibrated; for metrological traceability, integrate with an external digital pressure transducer certified to ISO/IEC 17025.