GAST DOA-P504-BN Oil-Free Diaphragm Vacuum Pump
| Origin | USA |
|---|---|
| Type | Oil-Free Diaphragm Vacuum Pump |
| Flow Rate | 28 L/min |
| Ultimate Vacuum | 24 inHg (–81 kPa) |
| Max Pressure | 60 psi (4.2 bar / 0.4 MPa) |
| Inlet/Outlet ID | 9.6 mm |
| Noise Level | <50 dB(A) |
| Power Supply | 220 V, 50 Hz, 2.2 A, 90 W |
| Dimensions (L×W×H) | 19.4 × 13 × 26 cm |
| Weight | 8 kg |
| Operating Ambient Temperature | 0–40 °C |
| Compliance | CE, UL Recognized, RoHS Compliant |
Overview
The GAST DOA-P504-BN is a compact, oil-free diaphragm vacuum pump engineered for precision and reliability in laboratory and light industrial applications. Utilizing a positive-displacement diaphragm mechanism, it generates vacuum and pressure without lubricating oil—eliminating risk of sample contamination, oil backstreaming, or maintenance-intensive servicing. Its robust polymer housing and chemically resistant elastomeric diaphragm (standard Neoprene/Nylon composite) enable stable operation with mildly corrosive vapors, solvents, and reactive gases commonly encountered in filtration, solvent evaporation, degassing, and thin-layer chromatography (TLC) spray development. Designed for continuous duty under ambient conditions (0–40 °C), the pump delivers consistent performance across variable load profiles while maintaining low thermal drift and mechanical hysteresis.
Key Features
- Oil-free operation ensures clean, hydrocarbon-free vacuum and pressure—critical for analytical sample integrity and compliance with ISO 8573-1 Class 0 air purity requirements.
- Compact footprint (19.4 × 13 × 26 cm) and lightweight design (8 kg) facilitate integration into fume hoods, mobile workstations, and benchtop vacuum manifolds.
- Low acoustic signature (<50 dB[A] at 1 m) supports use in shared lab environments without disruption to adjacent instrumentation or personnel.
- Integrated thermal protection and overload circuitry provide automatic shutdown under stall or overtemperature conditions, extending service life and ensuring safe unattended operation.
- Standard 9.6 mm ID barbed ports accommodate common vacuum tubing (e.g., Tygon®, Viton®) with secure push-fit connections; optional stainless-steel or PTFE-lined fittings available for aggressive media.
- UL Recognized and CE-marked per EN 61000-6-3 (EMC) and EN 61000-6-2 (immunity), meeting essential safety and electromagnetic compatibility requirements for global deployment.
Sample Compatibility & Compliance
The DOA-P504-BN is compatible with aqueous, alcoholic, and chlorinated solvent vapors, as well as non-oxidizing acidic and basic gases—including HCl, NH₃, and CO₂—at concentrations typical of vacuum-assisted filtration (e.g., Millipore® and Pall® systems) and rotary evaporation support. Its diaphragm material meets FDA 21 CFR §177.2600 for indirect food contact where applicable. While not certified for explosive atmospheres (ATEX/IECEx), it complies with IEC 61000-4-2 ESD immunity and is routinely deployed in GLP-compliant laboratories supporting USP , ASTM D86, and ISO 5667-3 workflows. For regulated environments requiring audit trails, the pump may be integrated into vacuum control systems compliant with FDA 21 CFR Part 11 when paired with validated data acquisition hardware and software.
Software & Data Management
As a standalone analog device, the DOA-P504-BN does not include embedded firmware or digital interfaces. However, it is fully compatible with third-party vacuum monitoring and control platforms—including LabVIEW™-driven PID controllers, Arduino-based pressure regulation modules, and industrial PLCs—via external analog pressure transducers (e.g., 0–5 V or 4–20 mA output sensors). When used in validated systems, its operational parameters (runtime, thermal cycles, on/off events) can be logged through connected SCADA or LIMS infrastructure to satisfy traceability requirements under ISO/IEC 17025 and GMP Annex 11. Calibration certificates for associated pressure gauges (e.g., GAST AE136 vacuum gauge) are available upon request.
Applications
- Vacuum-assisted filtration using Nalgene®, Millipore®, and Pall® filter holders and manifolds.
- Solvent removal and concentration in rotary evaporators and cold traps.
- Thin-layer chromatography (TLC) visualization via controlled solvent spray application.
- Gas sampling and pre-concentration in environmental air monitoring setups.
- Leak testing and evacuation of small-volume chambers in R&D prototyping.
- Positive-pressure actuation of fluidic valves, pneumatic actuators, and microfluidic devices.
FAQ
Is the DOA-P504-BN suitable for continuous 24/7 operation?
Yes—it is rated for continuous duty under ambient temperatures up to 40 °C and nominal load conditions. Thermal cutoff protection prevents overheating during extended use.
Can this pump handle hydrogen sulfide (H₂S) or chlorine gas?
Not recommended without modification. Standard Neoprene/Nylon diaphragms exhibit limited resistance to strong oxidizers and sulfur compounds. For such applications, specify Nordel/Nomex® (AF818A) or EPDM alternatives and consult GAST’s chemical compatibility guide.
Does the pump require periodic oil changes or lubrication?
No—this is an oil-free diaphragm design. No internal lubrication is required; only routine visual inspection of tubing, diaphragm integrity, and inlet filters is advised every 500 operating hours.
What is the expected service life under typical lab usage?
With proper ventilation and avoidance of particulate-laden or condensable vapors, mean time between failures (MTBF) exceeds 20,000 hours based on GAST’s accelerated life testing per ISO 13374.
Is a vacuum regulator included with the pump?
No—the DOA-P504-BN ships as a base unit. Optional accessories include the AA550C-V vacuum regulator, AE136 vacuum gauge, and AH707 pressure regulator—all sold separately and field-installable.
