Anest Iwata DVSL Series – High-Performance Two-Stage Scroll Pumps for Deep Vacuum
Anest Iwata DVSL series scroll vacuum pumps represent the pinnacle of oil-free scroll technology, delivering deep ultimate vacuum through advanced two-stage design. These premium pumps combine ultra-quiet operation, exceptional reliability, and deep vacuum capability for demanding applications where clean, oil-free vacuum below 5 Pa (0.05 mbar) is essential.
🎯 What Makes DVSL Series Exceptional?
The DVSL series is Anest Iwata's premier two-stage scroll pump line designed for applications requiring both oil-free operation and deep vacuum levels. By utilizing two scroll compression stages in series, these pumps achieve ultimate vacuum levels previously only possible with oil-sealed rotary vane pumps – but completely oil-free.
✅ Key Advantages:
| ⬇️ Deep Ultimate Vacuum |
Reaches < 5 Pa (0.05 mbar / 0.0005 Torr) – deepest among oil-free scroll pumps |
| 🛢️ 100% Oil-Free |
Completely oil-free operation – no contamination of process or environment |
| 🔇 Ultra-Quiet |
Exceptionally low noise (45-55 dB(A)) – quieter than conversation |
| 📊 Two-Stage Design |
Higher compression ratio and efficiency at low pressures |
| 🔧 Maintenance-Free |
No oil changes, no lubrication – truly maintenance-free operation |
| 💪 High Reliability |
Proven scroll technology with enhanced durability |
| 🌡️ Low Heat Generation |
Efficient cooling maintains optimal operating temperature |
| 🌍 Environmentally Friendly |
No oil disposal, energy efficient, clean operation |
📊 DVSL Series Technical Specifications:
Available Models:
| Model | Pumping Speed | Ultimate Vacuum | Power | Noise Level | Weight |
|---|
| DVSL-500D |
500 l/min (30 m³/h) |
< 5 Pa (0.05 mbar abs) |
1.5 kW |
< 52 dB(A) |
~55 kg |
| DVSL-1000D |
1,000 l/min (60 m³/h) |
< 5 Pa (0.05 mbar abs) |
2.2 kW |
< 55 dB(A) |
~95 kg |
| DVSL-2000D |
2,000 l/min (120 m³/h) |
< 5 Pa (0.05 mbar abs) |
3.7 kW |
< 58 dB(A) |
~150 kg |
📈 Detailed Performance Characteristics:
| Parameter | Specification |
|---|
| Vacuum Range: |
Atmospheric pressure to < 5 Pa (0.05 mbar abs) |
| Compression Type: |
Two-stage scroll compression in series |
| Pumping Speed (at 50 Pa): |
Maintains > 90% of rated speed |
| Cooling Method: |
Air-cooled with forced air circulation |
| Power Supply: |
Three-phase 200-230V AC or 380-440V AC, 50/60Hz |
| Ambient Temperature: |
5-40°C |
| Inlet Connection: |
KF-40 or KF-50 flange (model dependent) |
| Outlet Connection: |
KF-25 or Rc thread |
| Protection Class: |
IP54 (dust and splash protected) |
Available Anest Iwata DVSL series models: DVSL-500D, DVSL-1000D, DVSL-2000D, two-stage scroll pumps, deep vacuum scroll pumps, oil-free high vacuum pumps, laboratory scroll pumps, freeze dryer pumps, analytical vacuum pumps, clean vacuum pumps, ultra-quiet vacuum pumps
⚙️ Two-Stage Scroll Technology:
How Two-Stage Design Achieves Deeper Vacuum:
- First scroll stage (low-pressure stage) receives gas from vacuum chamber
- Gas is compressed to intermediate pressure (~50-100 mbar)
- Compressed gas exits first stage and enters second stage inlet
- Second scroll stage (high-pressure stage) further compresses gas
- Final compression to atmospheric pressure
- Gas is discharged to atmosphere
- Series configuration multiplies compression ratio
💡 Why Two-Stage is Superior:
| Feature | Single-Stage Scroll | Two-Stage Scroll (DVSL) |
|---|
| Ultimate Vacuum |
100-200 mbar |
< 5 Pa (0.05 mbar) ✅ 20-40x deeper! |
| Compression Ratio |
~10:1 |
~2,000:1 ✅ Much higher |
| Efficiency at Low Pressure |
Decreases below 50 mbar |
Maintains efficiency ✅ |
| Applications |
Medium vacuum |
Deep vacuum applications ✅ |
🔬 Technical Advantages:
- ✓ Optimized scroll profiles – each stage designed for its pressure range
- ✓ Staged compression – reduces temperature rise, improves efficiency
- ✓ Enhanced sealing – minimal back-leakage at low pressures
- ✓ Efficient gas handling – maintains high pumping speed throughout pressure range
- ✓ Lower power consumption – compared to equivalent rotary vane pumps
🏭 Ideal Applications for DVSL Series:
| Application Area | Specific Uses & Benefits |
|---|
| ❄️ Freeze Drying (Lyophilization) |
Laboratory and pilot-scale freeze dryers, pharmaceutical lyophilization, biological sample preservation, food freeze drying – deep vacuum essential for sublimation |
| 🔬 Analytical Instruments |
Mass spectrometers (roughing pump), FTIR spectrometers, surface analysis equipment, sample preparation – oil-free critical for sample purity |
| 💊 Pharmaceutical Production |
API synthesis, vacuum drying, solvent removal, tablet coating, sterile processing – clean vacuum prevents contamination |
| 🔬 Vacuum Distillation |
High-purity chemical distillation, solvent recovery, molecular distillation – deep vacuum enables low-temperature distillation |
| 🧪 Vacuum Concentration |
Centrifugal concentrators, vacuum evaporators, sample concentration – faster evaporation at lower temperatures |
| 🔬 Materials Research |
Thin film research, material processing under vacuum, controlled atmosphere experiments – clean environment essential |
| 🏭 Clean Room Applications |
Semiconductor support equipment, electronics manufacturing, precision assembly – oil-free prevents particle generation |
| 🔬 Vacuum Filtration |
High-efficiency filtration, membrane filtration, sterile filtration – deep vacuum improves filtration speed |
| 🧬 Biotechnology |
Cell culture work, protein purification, DNA/RNA handling – contamination-free environment critical |
🔩 Construction & Design Features:
⚙️ Premium Components:
| Component | Material/Design | Benefits |
|---|
| First Stage Scrolls |
High-grade aluminum alloy, PTFE coating |
Optimized for low-pressure compression, corrosion-resistant |
| Second Stage Scrolls |
High-grade aluminum alloy, special surface treatment |
Optimized for high-pressure compression, wear-resistant |
| Housing |
Cast aluminum with cooling fins |
Lightweight, excellent heat dissipation, corrosion-resistant |
| Motors |
High-efficiency three-phase motors |
Energy efficient, thermally protected, long service life |
| Bearings |
High-precision sealed ball bearings |
Maintenance-free, long life (20,000+ hours), low friction |
| Shaft Coupling |
Flexible coupling between stages |
Absorbs vibration, protects components, smooth operation |
| Base Frame |
Heavy-duty steel frame with vibration dampers |
Stable, reduces vibration transmission, quiet operation |
🛡️ Advanced Protection Features:
- ✓ Dual thermal overload protection – protects both motor stages
- ✓ Phase failure protection – prevents single-phase operation damage
- ✓ Over-current protection – protects motors from overload
- ✓ Overpressure relief – internal pressure relief mechanism
- ✓ Anti-restart protection – prevents automatic restart after power failure
- ✓ Advanced cooling system – optimized airflow for each stage
- ✓ Vibration isolation mounts – reduces noise transmission to 45-58 dB(A)
🎛️ Control & Monitoring (Optional Features):
- ✓ Digital vacuum gauge – real-time vacuum display
- ✓ Remote monitoring – RS-485 or analog output
- ✓ Alarm outputs – warnings for abnormal conditions
- ✓ Variable frequency drive (VFD) – energy-saving speed control
- ✓ Automatic restart – programmable restart after power restoration
💡 Model Selection Guide:
✅ Choose DVSL-500D When:
- Small to medium freeze dryers (up to 6L chamber)
- Laboratory rotary evaporators requiring deep vacuum
- Small vacuum ovens (< 150L) with deep vacuum needs
- Analytical instruments (MS backing pump, single instrument)
- Research applications with moderate throughput
- Budget-conscious but need two-stage performance
✅ Choose DVSL-1000D When:
- Medium freeze dryers (6-12L chamber)
- Large rotary evaporators (20-50L)
- Larger vacuum ovens (150-300L)
- Multiple analytical instruments
- Pilot-scale pharmaceutical production
- Balance of capacity and size – most popular model
✅ Choose DVSL-2000D When:
- Large freeze dryers (12-24L+ chamber)
- Industrial vacuum ovens
- Multiple concurrent applications
- Central vacuum system for laboratory
- Production-scale pharmaceutical operations
- Maximum capacity in oil-free two-stage scroll
- Fastest evacuation times critical
📊 DVSL vs. Other Technologies:
| Feature | DVSL Two-Stage Scroll | Single-Stage Scroll | Rotary Vane |
|---|
| Ultimate Vacuum |
< 5 Pa (0.05 mbar) ✅ |
100-200 mbar |
< 0.1 Pa ✅ Best |
| Oil-Free |
Yes ✅ |
Yes ✅ |
No |
| Noise Level |
45-58 dB(A) ✅ Excellent |
48-58 dB(A) ✅ |
60-75 dB(A) |
| Maintenance |
Minimal ✅ |
Minimal ✅ |
Regular oil changes |
| Initial Cost |
Higher |
Lower ✅ |
Moderate |
| Operating Cost |
Low ✅ |
Low ✅ |
Moderate (oil) |
| Best For |
Deep vacuum + oil-free ✅ |
Medium vacuum + oil-free |
Deepest vacuum |
🔧 Installation & Operation:
📐 Installation Requirements:
- ✓ Solid foundation – level, stable surface capable of supporting weight
- ✓ Adequate ventilation – 30 cm clearance on all sides for cooling airflow
- ✓ Three-phase power – verify correct voltage (200-230V or 380-440V)
- ✓ Proper grounding – earth connection required for safety
- ✓ Inlet connection – use appropriate KF flange and O-rings
- ✓ Exhaust routing – ensure exhaust is directed away from intake
- ✓ Vibration isolation – use included rubber mounts or isolation pads
⚡ Startup Procedure:
- Verify all electrical connections and grounding
- Check motor rotation direction (three-phase models)
- Ensure cooling air paths are unobstructed
- Close vacuum valve to chamber
- Start pump and allow warm-up (2-3 minutes)
- Verify normal sound and vibration
- Slowly open valve to chamber
- Monitor vacuum level and pumping performance
✅ Operating Best Practices:
- ✓ Allow pump to reach ultimate vacuum before starting process
- ✓ Use cold trap if process involves significant condensables
- ✓ Monitor pump temperature – should stabilize after warm-up
- ✓ Keep cooling air intake clean and unobstructed
- ✓ Avoid pumping liquids – always use appropriate traps
- ✓ Allow pump to cool before shutdown in hot environments
- ✓ Regular performance checks ensure optimal operation
🔧 Maintenance & Service Life:
📅 Maintenance Schedule:
| Task | Interval | Description |
|---|
| Visual Inspection |
Monthly |
Check for unusual noises, vibrations, temperature, leaks |
| Cooling System Check |
Quarterly |
Clean cooling air intake, verify fan operation, remove dust |
| Inlet Filter Check |
Quarterly |
Clean or replace inlet filter (if equipped) |
| Electrical Connections |
6 months |
Check terminal tightness, inspect wiring condition |
| Performance Verification |
Annually |
Measure ultimate vacuum, compare to specifications |
| Vibration Mounts |
Annually |
Check condition of vibration isolation mounts |
| Bearing Inspection |
3-5 years |
Listen for bearing noise, check for excessive play |
| Scroll Element Inspection |
5-8 years |
Check scroll condition if performance degraded |
| Complete Overhaul |
10-15 years |
Full disassembly, part replacement, testing, recertification |
⏱️ Expected Service Life:
- ✓ Scroll elements (both stages): 15,000-25,000 hours typical operation
- ✓ Bearings: 25,000-40,000 hours (sealed, maintenance-free)
- ✓ Motors: 30,000-50,000 hours continuous operation
- ✓ Overall pump life: 15-20+ years with proper maintenance
🔧 Why DVSL Requires Minimal Maintenance:
- ✓ No oil changes ever – completely oil-free sealed system
- ✓ No lubrication needed – self-lubricating scroll design
- ✓ No water cooling – air-cooled simplicity
- ✓ Sealed bearings – pre-lubricated for life
- ✓ Few consumables – occasional filter cleaning only
- ✓ Robust construction – designed for years of continuous operation
⚠️ Application Considerations:
✅ Ideal Conditions:
- ✅ Clean, dry gases (or use appropriate cold trap)
- ✅ Vacuum requirement < 5 Pa (0.05 mbar)
- ✅ Oil-free vacuum absolutely required
- ✅ Quiet operation critical (laboratories, hospitals)
- ✅ Minimal maintenance desired
- ✅ Ambient temperature 5-40°C
- ✅ Three-phase power available
⚠️ Limitations:
- ⚠️ Not for ultra-high vacuum (< 0.1 Pa) – use turbo or diffusion pump
- ⚠️ Not for pumping large amounts of liquids without trap
- ⚠️ Not for highly corrosive gases without special specification
- ⚠️ Requires three-phase power (single-phase not available in this series)
🌟 Why Choose DVSL Series?
| ⬇️ Deepest Oil-Free Vacuum |
< 5 Pa – deepest ultimate vacuum available in oil-free scroll technology |
| 🇯🇵 Premium Japanese Quality |
Anest Iwata's top-tier scroll pump series |
| 🔇 Ultra-Quiet |
45-58 dB(A) – exceptionally quiet for high-performance pumps |
| 🛢️ True Oil-Free |
Completely oil-free – ideal for sensitive applications |
| 💪 Proven Reliability |
Thousands of installations worldwide in demanding applications |
| 🔧 Maintenance-Free |
No oil changes, minimal service – years between major maintenance |
| ⚡ Energy Efficient |
Lower power consumption than equivalent rotary vane pumps |
| 🌍 Eco-Friendly |
No oil disposal, clean operation, environmentally responsible |
🔧 Our Service for DVSL Series:
| 🛒 Sales |
All DVSL series models available – DVSL-500D, DVSL-1000D, DVSL-2000D |
| 🎯 Application Engineering |
Expert consultation for freeze dryer sizing, system design, integration |
| ♻️ Complete Overhaul |
Factory-standard reconditioning with genuine Anest Iwata parts |
| ⚙️ Expert Repair |
Scroll element replacement, bearing renewal, motor service, performance restoration |
| 📦 Genuine Spare Parts |
Original parts in stock: scroll sets, bearings, motors, seals, electronics |
| 🚗 On-Site Service |
Installation, commissioning, training, troubleshooting at your facility |
| 🔍 Performance Testing |
Ultimate vacuum measurement, pumping speed curves, leak detection |
| 🎓 Training Programs |
Operator training, maintenance training, optimization workshops |
Need an Anest Iwata DVSL Series Pump?
Whether DVSL-500D for laboratory freeze dryers, versatile DVSL-1000D for pilot-scale production (our most popular model), or high-capacity DVSL-2000D for industrial freeze drying – our Anest Iwata two-stage scroll vacuum experts are ready to help.
Perfect for: Pharmaceutical freeze drying, research lyophilization, analytical instrument backing, vacuum distillation, clean room applications, and any demanding process requiring deep vacuum (< 5 Pa) with absolutely oil-free, ultra-quiet operation.
The ideal replacement for rotary vane pumps: Achieve similar vacuum depth without oil contamination, oil changes, or oil disposal. Quieter, cleaner, and lower maintenance than traditional oil-sealed pumps.
Japanese premium quality since 1926 – deepest oil-free vacuum available – professional local service! Contact us today for expert consultation and the finest two-stage scroll vacuum technology.
