Product Overview
The ULVAC DA-241SE is a dry vacuum diaphragm pump engineered for oil-free evacuation and clean vacuum generation in industrial and laboratory systems. Unlike rotary vane or piston-type hydraulic pumps, the DA-241SE uses a reciprocating elastomeric diaphragm driven by an eccentric cam mechanism to displace air and process gases without any lubricating fluid in the pumping chamber. This dry-running working principle eliminates oil backstreaming, reduces maintenance intervals, and allows the pump to handle condensable vapors and mildly corrosive gas streams. The DA-241SE is a compact, single-phase unit widely deployed as a backing pump for turbomolecular and diffusion systems, as a standalone roughing pump, and as a vacuum source for analytical instrumentation and industrial process equipment.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Dry Vacuum Diaphragm Pump (Oil-Free Positive Displacement) |
| Model Designation | DA-241SE |
| Manufacturer | ULVAC |
| Pumping Principle | Reciprocating diaphragm with eccentric drive; no sealing oil required |
| Ultimate Pressure | Approx. 1.0 × 10³ Pa (rough vacuum range) |
| Nominal Pumping Speed | Approx. 20–25 L/min class (single-phase configuration) |
| Motor & Power Supply | Single-phase AC motor, standard industrial voltage |
| Mounting & Connection | Standard flange/port inlet and outlet; base-mounted chassis |
| Operating Environment | Indoor industrial / laboratory, ambient temperature rated |
Engineering Features & Advantages
- Oil-Free Dry Operation: The diaphragm pumping chamber contains no lubricant, preventing oil backstreaming and contamination of the vacuum system — critical for semiconductor, analytical, and coating processes.
- Condensable Vapor Tolerance: The dry reciprocating diaphragm design handles water vapor and solvent vapors without the emulsion and corrosion problems typical of oil-sealed pumps.
- Low Maintenance Architecture: Fewer wearing parts than rotary vane pumps; diaphragm and valve plate replacement is straightforward, minimizing downtime and consumable cost.
- Quiet, Low-Vibration Running: Balanced eccentric drive and elastomeric diaphragm action deliver smooth, low-noise operation suitable for laboratory and cleanroom environments.
- Compact Footprint: Small chassis dimensions allow integration into OEM equipment, instrument racks, and space-constrained process skids.
- Direct Fit Replacement: Dimensional and functional compatibility with the original ULVAC DA-series interface for drop-in service replacement.
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PRODUCT IMAGES
ULVAC DA-241SE Dry Vacuum Diaphragm Pump
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine ULVAC DA-241SE Solenoid Valve. This Japan-made 24V DC hydraulic component features a 2-way normally closed design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.