ROCKER Chemker610 Corrosion-Resistant Diaphragm Vacuum Pump

Overview

The ROCKER Chemker610 is an oil-free, corrosion-resistant diaphragm vacuum pump engineered for demanding laboratory environments where exposure to aggressive vapors—such as organic solvents, mineral acids, and alkaline fumes—is routine. Unlike rotary vane or piston pumps, the Chemker610 operates on a positive-displacement diaphragm principle: a PTFE-coated elastomeric diaphragm oscillates under electromagnetic or mechanical actuation, generating vacuum without lubricating oil. This eliminates oil carryover, vapor backstreaming, and cross-contamination—critical for applications requiring ultra-clean vacuum paths or regulatory-compliant sample integrity. Its ultimate vacuum of 7 mbar (5.25 Torr) and stable flow rate of 30 L/min at atmospheric inlet pressure make it suitable for continuous-duty operation with moderate vacuum requirements, including solvent removal, vacuum filtration, and inert gas purging in sealed systems.

Key Features

• Full PTFE-wetted path: All gas-contact surfaces—including diaphragm, valves, and internal chamber—are constructed from chemically inert polytetrafluoroethylene (PTFE), ensuring compatibility with HCl, HF, HNO₃, acetone, chloroform, THF, and other aggressive media commonly encountered in synthetic chemistry and analytical sample preparation.
• Oil-free & maintenance-free operation: No lubrication required; no oil changes, filter replacements, or scheduled servicing beyond periodic inspection of inlet tubing and diaphragm wear (typical service life >10,000 hours under standard lab conditions).
• Thermal safety architecture: Integrated bi-metallic thermal cut-off switch embedded in the motor windings automatically de-energizes the unit when internal temperature exceeds safe operational limits (typically >95 °C), then self-resets upon cooling—ensuring long-term reliability and compliance with IEC 60335-1 safety standards.
• Low-noise, low-vibration design: Direct-drive motor coupling and optimized diaphragm stroke amplitude limit airborne noise to ≤60 dB(A) at 1 m distance and reduce structural transmission—ideal for shared lab spaces, laminar flow hoods, or proximity to sensitive instrumentation such as mass spectrometers or microbalances.
• High-starting-vacuum capability: Maintains effective suction performance even when restarting under partial vacuum (e.g., during intermittent use with rotary evaporators or vacuum-controlled reactors), eliminating need for venting or manual purge cycles.

Sample Compatibility & Compliance

The Chemker610 is validated for continuous duty with non-explosive, non-particulate gas streams. It is not rated for pumping condensable vapors above their dew point without cold trap protection, nor for abrasive particulates or pyrophoric gases. All electrical components meet CE marking requirements per Directive 2014/35/EU (Low Voltage Directive) and 2014/30/EU (EMC Directive). The pump housing conforms to IP20 ingress protection and carries RoHS 2011/65/EU compliance for restricted substances. While not intrinsically safe, its design supports integration into GLP- and GMP-aligned workflows when paired with appropriate process documentation and calibration records.

Software & Data Management

As a standalone analog pump, the Chemker610 does not include digital interfaces, firmware, or data logging capabilities. However, its consistent electrical signature (200 W, 220 V / 50 Hz, 1.2 A) enables seamless integration with third-party vacuum controllers, programmable logic controllers (PLCs), or building management systems via dry-contact relay outputs (optional accessory). For audit-ready environments, users may log runtime hours manually or via external power meters compliant with ISO/IEC 17025 traceability requirements.

Applications

• Solvent recovery and concentration using rotary evaporators (e.g., Buchi R-300, IKA RV 10)
• Vacuum-assisted filtration of corrosive filtrates (e.g., acid digestion residues, catalyst slurries)
• Drying hygroscopic or air-sensitive compounds in vacuum ovens (e.g., Binder VD series)
• Evacuation of Schlenk lines and glovebox antechambers during inert-atmosphere synthesis
• Supporting headspace analysis and purge-and-trap sample introduction in GC systems
• Creating controlled depressurization in lyophilizer shelf pre-cooling phases

FAQ

Is the Chemker610 suitable for pumping hydrochloric acid vapor?
Yes—provided the vapor concentration remains below saturation and ambient temperature is maintained above the acid’s dew point. Use of a PTFE-lined cold trap is strongly recommended for high-concentration or prolonged exposure.
Does the pump include vacuum regulation or pressure control?
No—the Chemker610 operates at fixed speed and lacks built-in vacuum regulation. External needle valves or electronic vacuum controllers (e.g., VAT or MKS models) must be used for precise setpoint management.
Can it be mounted vertically or inverted?
It is designed for horizontal benchtop orientation only. Vertical mounting may accelerate diaphragm fatigue and compromise sealing integrity.
What is the expected service life under typical lab usage?
With proper inlet filtration and avoidance of liquid ingestion, mean time between failures (MTBF) exceeds 15,000 operating hours, per ROCKER’s accelerated life testing per ISO 5801.
Is calibration certification available?
Factory calibration data (vacuum curve, flow vs. pressure) is provided with each unit. NIST-traceable calibration services are available through authorized ROCKER service centers upon request.