ROCKER Rocker811 Oil-Free Vacuum Pump

Overview

The ROCKER Rocker811 is an oil-free piston vacuum pump engineered for reliable, contamination-free operation in analytical, quality control, and research laboratory environments. Unlike oil-lubricated rotary vane pumps, the Rocker811 employs a precision-machined reciprocating piston mechanism with self-lubricating PTFE-coated components—eliminating the need for lubricating oil, oil changes, or associated maintenance downtime. This design ensures consistent vacuum performance without risk of oil backstreaming, hydrocarbon contamination, or vapor carryover—critical for applications involving sensitive samples, sterile filtration, or volatile organic compounds. With an ultimate vacuum of 33.3 mbar (equivalent to −735 mmHg), it delivers sufficient negative pressure for routine vacuum-assisted processes including filtration, drying, degassing, and sampling. Its compact footprint (345 × 175 × 200 mm) and lightweight construction (7.9 kg) facilitate integration into fume hoods, biosafety cabinets, and modular lab benches.

Key Features

• Oil-free piston technology with PTFE composite seals and wear-resistant cylinder liners—ensures long-term dimensional stability and zero oil vapor emission.
• Integrated thermal overload protection: a bimetallic switch embedded in the motor windings automatically interrupts power when internal temperature exceeds safe operating thresholds; system resumes operation after passive cooling.
• Standard inlet particulate/moisture filter (replaceable cartridge) safeguards the compression chamber from dust, aerosols, and condensate—extending service intervals and maintaining volumetric efficiency over time.
• Onboard vacuum regulation valve enables precise manual control of suction pressure—essential for optimizing filtration rates across variable membrane resistances or preventing sample collapse during delicate vacuum drying.
• CE-marked per Directive 2014/35/EU (Low Voltage Directive) and 2014/30/EU (EMC Directive), confirming compliance with essential health, safety, and electromagnetic compatibility requirements for deployment in EU-regulated laboratories.
• Quiet operation at 68 dB(A) measured at 1 m distance—meets ISO 3744 acoustic standards for low-noise laboratory equipment, minimizing ambient disruption in shared workspaces.

Sample Compatibility & Compliance

The Rocker811 is compatible with aqueous, mildly acidic, and non-corrosive solvent-based samples when used with chemically resistant tubing (e.g., silicone, Viton®, or fluoropolymer-lined hoses). It is not rated for continuous duty with aggressive halogenated solvents, strong oxidizers, or highly viscous suspensions without upstream trapping. For microbiological applications—including membrane filtration assays per ISO 9308-1 (E. coli detection) or EPA Method 1603—the pump’s oil-free architecture prevents microbial growth niches and eliminates interference with colony-forming unit (CFU) enumeration. Its construction adheres to GLP-relevant design principles: no internal oil reservoirs, accessible filter housing, and traceable serial-numbered components support audit-ready documentation. While not intrinsically rated for hazardous locations, its CE certification validates electrical safety under normal laboratory environmental conditions (IEC 61010-1 Class II, Pollution Degree 2).

Software & Data Management

The Rocker811 operates as a standalone analog device with no embedded microcontroller, firmware, or digital interface—deliberately designed for operational simplicity, electromagnetic resilience, and regulatory transparency. No software drivers, cloud connectivity, or data logging capability are included or required. This architecture inherently satisfies FDA 21 CFR Part 11 “non-electronic record” criteria: all process parameters (e.g., runtime, vacuum level via external gauge, filter replacement dates) are manually documented by users in paper or validated electronic lab notebooks (ELN). The absence of programmable logic removes validation complexity for GMP-regulated QC labs performing routine vacuum filtration in pharmaceutical water testing (USP ) or environmental compliance workflows.

Applications

• Vacuum-assisted filtration of biological fluids, environmental water samples, and pharmaceutical suspensions using glass fiber, polycarbonate, or mixed cellulose ester membranes.
• Controlled-rate vacuum drying of heat-sensitive reference standards, calibration materials, and lyophilized reagents in benchtop ovens.
• Deaeration of resin mixtures, casting compounds, and dental impression materials prior to curing.
• Air sampling per ISO 10131-1 for viable particle monitoring in cleanrooms and controlled environments.
• Suspended solids analysis (TSS) in wastewater per Standard Methods 2540D, where oil-free aspiration prevents interference with gravimetric quantification.
• Supporting vacuum manifolds in multi-position solid-phase extraction (SPE) systems requiring stable, pulsation-dampened flow.

FAQ

Is the Rocker811 suitable for continuous 24/7 operation?
No—it is rated for intermittent duty (duty cycle ≤ 60% per hour). Extended unattended use may accelerate thermal cycling stress on the piston assembly and reduce service life.
Can I connect it directly to a vacuum oven or desiccator?
Yes, provided the system volume and leak rate remain within the pump’s capacity to reach and maintain 33.3 mbar; always install an inline moisture trap if condensable vapors are present.
What maintenance is required beyond filter replacement?
None—no oil changes, valve adjustments, or seal lubrication are necessary. Annual visual inspection of piston rod alignment and filter housing integrity is recommended.
Does it meet ISO 8573-1 Class 0 air purity requirements?
While not certified to that standard (which applies to compressed air), its oil-free displacement mechanism inherently delivers Class 0-equivalent vacuum quality—zero oil aerosol or vapor content.
Is the 2-year warranty transferable upon resale?
No—the warranty is valid only for the original end-user purchaser and requires proof of authorized ROCKER distributor purchase.