GAST DOA-P504-BN Oil-Free Diaphragm Vacuum Pump
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | DOA-P504-BN |
| Pump Type | Diaphragm Vacuum Pump |
| Product Type | Oil-Free Vacuum Pump |
| Air Displacement Rate | 27 L/min |
| Ultimate Vacuum | 200 mbar (abs) |
| External Dimensions | 193 × 165 × 271 mm (L × W × H) |
| Weight | 6.8 kg |
| Motor Power | 90 W |
| Electrical Specification | 220 V AC, 50 Hz, Single-Phase |
Overview
The GAST DOA-P504-BN is a compact, oil-free diaphragm vacuum pump engineered for precision and reliability in laboratory and light industrial environments. Utilizing a corrosion-resistant PTFE-coated diaphragm and stainless steel valve assembly, it operates without lubricating oil—eliminating risk of sample contamination, oil backstreaming, or maintenance-intensive servicing. Its positive displacement mechanism relies on reciprocating motion of the elastomeric diaphragm driven by an eccentric cam, generating consistent vacuum and pressure output across variable load conditions. Designed for continuous duty cycles at ambient temperatures up to 40 °C, the DOA-P504-BN delivers stable performance in applications requiring clean, dry, and chemically inert vacuum sources—including filtration, degassing, vacuum drying, and aspiration in analytical workflows.
Key Features
- Oil-free operation ensures zero hydrocarbon contamination—critical for GC sample preparation, solvent recovery, and pharmaceutical QC labs operating under GLP/GMP guidelines.
- PTFE-coated diaphragm and chemically resistant internal components support compatibility with mildly corrosive vapors (e.g., HCl, SO₂, acetic acid), extending service life in demanding chemical handling tasks.
- Low-noise design (<62 dBA at 1 m) enables integration into shared lab spaces, laminar flow hoods, or portable instrumentation without acoustic interference.
- Integrated pressure gauge, adjustable pressure regulator, ergonomic carrying handle, non-slip rubber feet, and standardized vacuum/pressure fittings (¼” NPT) facilitate rapid deployment and system integration.
- Thermally protected 90 W induction motor meets IEC 60034 standards; rated for continuous operation with automatic thermal cut-off to prevent coil damage during overload or restricted airflow.
- Compact footprint (193 × 165 × 271 mm) and lightweight construction (6.8 kg) support benchtop, mobile cart, or OEM integration in space-constrained instruments such as automated filtration stations or handheld vacuum manifolds.
Sample Compatibility & Compliance
The DOA-P504-BN is compatible with aqueous, organic, and mildly aggressive gas streams typical in academic research, environmental testing, and biotech R&D laboratories. It complies with CE marking requirements (2014/30/EU EMC Directive and 2014/35/EU LVD Directive) and conforms to RoHS 2011/65/EU restrictions on hazardous substances. While not certified for ATEX or IECEx zones, its non-sparking motor and absence of oil make it suitable for Class I, Division 2 environments per NEC 500 when installed per manufacturer instructions. For regulated quality systems, audit-ready documentation—including factory calibration certificates and material declarations—is available upon request to support FDA 21 CFR Part 11–aligned instrument qualification protocols.
Software & Data Management
As a standalone mechanical vacuum source, the DOA-P504-BN does not incorporate embedded firmware or digital connectivity. However, its analog pressure regulation and stable flow characteristics enable seamless integration with third-party vacuum controllers (e.g., Brooks Instrument FC-100, VAT AG VACcubator) and data acquisition systems via 4–20 mA or 0–10 V analog output modules (optional accessories). When deployed in validated workflows, users may document operational parameters—including runtime hours, pressure setpoints, and maintenance logs—in electronic lab notebooks (ELNs) compliant with ALCOA+ principles. GAST provides full technical manuals, preventive maintenance schedules, and replacement part diagrams in English, supporting ISO/IEC 17025-compliant equipment management.
Applications
- Gravity and vacuum-assisted membrane filtration (e.g., ASTM D5156, ISO 7027) for water quality analysis and particulate matter quantification.
- Evaporative concentration of biological samples in centrifugal concentrators and cold traps.
- Vacuum desiccation of hygroscopic compounds prior to FTIR or XRD analysis.
- Gas sampling and purge-and-trap preconcentration in EPA Method 502.2 and 8260 workflows.
- OEM integration into automated liquid handlers, microplate washers, and point-of-care diagnostic platforms requiring quiet, maintenance-free vacuum generation.
FAQ
What is the maximum allowable inlet pressure for continuous operation?
The DOA-P504-BN is rated for ultimate vacuum down to 200 mbar (abs); continuous operation above 500 mbar (abs) inlet pressure is not recommended without external pressure regulation.
Can this pump be used for positive-pressure applications?
Yes—the DOA-P504-BN is a dual-purpose pump capable of both vacuum generation and low-pressure air displacement (up to 4.2 bar g), provided appropriate outlet piping and relief protection are implemented.
Is routine maintenance required beyond filter replacement?
Yes—GAST recommends replacing the inlet particulate filter every 500 operating hours and inspecting the diaphragm and valves annually or after 2,000 hours, whichever occurs first, to maintain specified performance tolerances.
Does the pump meet FDA or USP requirements for pharmaceutical use?
While the DOA-P504-BN is not individually FDA-cleared, its oil-free, non-shedding construction and compliance with USP and environmental control guidance make it suitable for ancillary vacuum functions in compounding and stability testing labs.
What certifications accompany the unit upon shipment?
Each unit ships with a Certificate of Conformance (CoC), CE Declaration of Conformity, and RoHS compliance statement; traceable calibration reports are available as optional add-ons.
