GAST DOA-P504-BN Oil-Free Diaphragm Vacuum Pump

Overview

The GAST DOA-P504-BN is a compact, oil-free diaphragm vacuum pump engineered for reliable, maintenance-free operation in laboratory, analytical, and light industrial environments. Utilizing a precision-machined PTFE-coated diaphragm and stainless-steel valve assembly, it achieves consistent vacuum generation without lubrication—eliminating risk of oil contamination, hydrocarbon outgassing, or particulate shedding. Its dual-purpose design supports both vacuum aspiration (down to 200 mbar absolute) and positive-pressure air delivery (up to 60 psi), making it suitable for applications requiring clean, dry gas handling—including sample preparation, filtration, vacuum drying, glove box purging, and pneumatic actuation of lab automation components. The pump operates on a single-phase 220 V / 50 Hz supply, with thermally protected induction motor architecture ensuring stable performance under continuous duty cycles.

Key Features

• Oil-free operation ensures ISO Class 5 (Class 100) cleanroom-compatible exhaust and eliminates need for oil changes, filter replacements, or venting concerns associated with rotary vane pumps.
• Robust diaphragm construction with reinforced elastomeric membranes and corrosion-resistant valve plates provides extended service life (>10,000 hours MTBF) and resistance to mild chemical vapors.
• Integrated pressure regulator and analog pressure gauge enable precise control of output pressure across the full 0–60 psi range; vacuum level is stabilized via internal check-valve feedback loop.
• Low-noise operation (<52 dBA at 1 m) and vibration-damped mounting minimize acoustic interference in shared lab spaces and sensitive instrumentation zones.
• Compact footprint (193 × 165 × 271 mm) and lightweight design (6.81 kg) support benchtop integration, mobile cart mounting, or OEM incorporation into analytical platforms such as HPLC degassers, microplate washers, or environmental samplers.
• CE-marked and RoHS-compliant; meets IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) standards for laboratory-grade electrical safety.

Sample Compatibility & Compliance

The DOA-P504-BN is compatible with non-condensable, non-explosive, and chemically inert gases. While not rated for Class I, Division 1 hazardous locations, its standard configuration handles ambient air, nitrogen, argon, and dried CO₂ within specified pressure and flow limits. Optional fluoropolymer-coated models (e.g., DOA-P504-BN-FC) are available for enhanced resistance to acidic or halogenated vapors. The pump conforms to ASTM D3924–22 (Standard Specification for Laboratory Vacuum Systems) for vacuum integrity and flow stability. It supports GLP-compliant workflows when paired with validated pressure transducers and audit-trail-capable controllers—though standalone operation does not include FDA 21 CFR Part 11 electronic record functionality.

Software & Data Management

As a stand-alone electromechanical device, the DOA-P504-BN operates without embedded firmware or digital interfaces. However, it is fully compatible with third-party process monitoring systems via analog 0–10 V or 4–20 mA pressure/vacuum signal outputs (available on custom-configured units). Integration with LabVIEW™, MATLAB®, or PLC-based SCADA platforms enables real-time logging of vacuum setpoints, runtime hours, and thermal status. For regulatory environments, external data loggers with NIST-traceable calibration certificates may be deployed to satisfy ISO/IEC 17025 documentation requirements for pump performance verification.

Applications

• Vacuum filtration of aqueous and organic solvents in chemistry and biology labs
• Evaporative concentration and lyophilization pre-vacuum stages
• Gas purging of analytical sample cells, FTIR chambers, and optical enclosures
• Actuation of pneumatic valves, pinch tubes, and microfluidic manifolds
• Supporting vacuum-assisted liquid handling in automated ELISA and PCR workstations
• Calibration reference source for vacuum gauges and leak detection systems (within 200–1000 mbar range)

FAQ

Is the DOA-P504-BN suitable for continuous-duty operation?
Yes—it is rated for indefinite intermittent or continuous operation at ambient temperatures ≤40°C and relative humidity ≤80% non-condensing.
Can this pump handle corrosive gases?
The standard model is not recommended for aggressive acids or oxidizers; however, the optional fluoropolymer-coated variant (DOA-P504-BN-FC) extends compatibility to HCl, Cl₂, and SO₂ at reduced flow rates and elevated maintenance intervals.
Does it require periodic maintenance?
No scheduled maintenance is required beyond visual inspection of inlet filters and verification of mounting integrity every 6 months; diaphragm replacement is typically needed only after ≥10,000 operating hours.
What is the expected lifetime of the motor?
The sealed induction motor has a nominal service life of 25,000 hours under rated load conditions, supported by thermal overload protection and Class B insulation rating.
Can it be integrated into a GMP-regulated manufacturing line?
Yes—as a utility component, it may be included in URS and IQ/OQ protocols when supplied with factory calibration reports, material certifications (e.g., RoHS, REACH), and mechanical installation drawings.