Atlas Copco GVD - Two-Stage Oil-Sealed Rotary Vane Vacuum Pumps for High Vacuum Applications
Atlas Copco GVD – Two-Stage Oil-Sealed Rotary Vane Vacuum Pumps
Atlas Copco GVD vacuum pumps are proven two-stage oil-sealed rotary vane pumps for applications requiring deep ultimate vacuum. With their two-stage design, they achieve significantly lower pressures than single-stage pumps, making them ideal for high vacuum processes.
GVD Product Range:
The GVD series is divided into two main categories:
1. GVD 3-28 Series – Laboratory and Small Industrial Applications
| Model | Pumping Speed (m³/h) | Pumping Speed (CFM) | Ultimate Vacuum | Motor Power | Weight (approx.) |
|---|---|---|---|---|---|
| GVD 3 | 3 | 1.8 | < 10⁻³ mbar | 0.37 kW | 18 kg |
| GVD 6 | 6 | 3.5 | < 10⁻³ mbar | 0.55 kW | 28 kg |
| GVD 14 | 14 | 8.2 | < 10⁻³ mbar | 1.1 kW | 42 kg |
| GVD 20 | 20 | 11.8 | < 10⁻³ mbar | 1.5 kW | 55 kg |
| GVD 28 | 28 | 16.5 | < 10⁻³ mbar | 2.2 kW | 68 kg |
Applications GVD 3-28 Series:
- Laboratory Vacuum: General laboratory applications, vacuum drying ovens
- Analytical Instruments: Mass spectrometers, chromatography, spectroscopy
- Turbomolecular Support: Backing pump for small turbomolecular pumps
- Leak Detection: Helium leak detectors, tightness testing
- Research & Development: Materials research, surface science
- Medical Technology: Laboratory equipment, sterilization
2. GVD 275 Series – Industrial High Vacuum Applications
| Model | Pumping Speed (m³/h) | Pumping Speed (CFM) | Ultimate Vacuum | Motor Power | Weight (approx.) |
|---|---|---|---|---|---|
| GVD 275 | 275 | 162 | < 10⁻³ mbar | 7.5 kW | 320 kg |
Applications GVD 275 Series:
- Metallurgical Processes: Vacuum heat treatment, degassing, melting
- Refrigeration & Air Conditioning: Evacuation of refrigeration and AC systems
- Vacuum Drying: Industrial drying processes, wood drying
- Distillation: Chemical distillation, solvent recovery
- Freeze-Drying: Lyophilization in pharmaceutical and food industries
- Cryogenics: Cryogenic systems, liquefaction processes
- Oil Purification: Transformer oil degassing and purification
- Vacuum Coating: As backing pump for larger systems
Operating Principle of Two-Stage Pumps:
In two-stage rotary vane vacuum pumps, gas passes through two pumping stages sequentially. The first stage (high vacuum stage) draws in the gas and compresses it to an intermediate pressure. The second stage (backing stage) takes the pre-compressed gas and discharges it against atmospheric pressure. This two-stage arrangement enables significantly deeper ultimate vacuum than single-stage pumps.
Technical Advantages of GVD Pumps:
- ✓ Deep Ultimate Vacuum - Down to 10⁻³ mbar (0.001 mbar)
- ✓ Two-Stage Design - Optimal compression across entire pressure range
- ✓ Compact Construction - Both stages in one housing
- ✓ No Suck-Back on Shutdown - Automatic anti-suckback protection
- ✓ Gas Ballast Control - For high vapor loads and condensable gases
- ✓ Easy Maintenance - Simple access to all components
- ✓ Robust Design - Built for continuous operation
- ✓ Quiet Operation - Low noise emission
- ✓ Energy Efficient - Optimized power consumption
- ✓ Reliable Performance - Proven Atlas Copco quality
Single-Stage vs. Two-Stage - When GVD?
| Criterion | Single-Stage (GVS) | Two-Stage (GVD) |
|---|---|---|
| Ultimate Vacuum | ○ 0.5 mbar | ✓ 0.001 mbar (10⁻³) |
| Application | Rough vacuum, packaging, industry | High vacuum, analytics, metallurgy |
| Pumping Speed HV | ○ Low at < 1 mbar | ✓ High down to 10⁻³ mbar |
| Price | ✓ Lower | ○ Higher |
| Complexity | ✓ Simpler (one stage) | ○ More complex (two stages) |
| Energy Consumption | ○ Higher for deep vacuum | ✓ More efficient in HV range |
Main Application Areas:
- Metallurgy: Vacuum heat treatment, vacuum melting, degassing processes
- Refrigeration Technology: Evacuation of refrigeration and air conditioning systems
- Vacuum Drying: Industrial dryers, wood drying, chemical drying
- Distillation: Vacuum distillation, molecular distillation, solvent recovery
- Freeze-Drying: Pharmaceutical lyophilization, food freeze-drying
- Cryogenics: Liquefaction of gases, cryogenic research
- Oil Purification: Transformer oil degassing, insulating oil treatment
- Laboratory: Vacuum ovens, rotary evaporators, analytical instruments
- Coating Technology: As backing pump for turbo or diffusion pumps
- Research: Materials science, surface physics, thin films
- Medical Technology: Sterilization, freeze-drying of biologics
- Chemical Industry: Reactors, synthesis, polymer degassing
Available Configurations:
- Standard Version: Base model with all essential features
- With Gas Ballast: For condensable vapors (standard)
- With Oil Mist Eliminator: For clean laboratory environment
- ATEX Version: Explosion-proof for hazardous areas
- With Frequency Inverter: Variable speed control
- Different Voltages: 230V single-phase, 400V three-phase, custom voltages
- 50 Hz or 60 Hz: For worldwide use
- Various Flanges: ISO-K, ISO-F, NPT, custom connections
Maintenance and Service Life:
- Oil Change Intervals: 3,000-6,000 operating hours (depending on application)
- Vane Replacement: 10,000-20,000 operating hours
- General Overhaul: After 20,000-40,000 operating hours
- Service Life: 15-25 years with proper maintenance
- Ambient Temperature: +5°C to +40°C
- Noise Level: 52-68 dB(A) depending on model
Our Complete Service for Atlas Copco GVD Pumps:
- ✓ Sales: New and refurbished GVD pumps of all sizes
- ✓ Technical Consulting: Application support and system design
- ✓ Spare Parts: Vanes, seals, bearings, valves, oil mist eliminators in stock
- ✓ Vacuum Oils: Original Atlas Copco high vacuum oils
- ✓ Accessories: Intake filters, silencers, pressure gauges, controllers
- ✓ Maintenance: Regular inspections and preventive maintenance
- ✓ Repair & Overhaul: Professional general overhaul in our workshop
- ✓ On-Site Service: Installation, commissioning, training
- ✓ Emergency Service: Fast help for critical systems
- ✓ Performance Testing: Verification of pump specifications
Selection Guide - Important Questions:
- What ultimate vacuum is required? (mbar absolute - if < 0.1 mbar → GVD)
- What pumping speed is needed? (m³/h at operating pressure)
- What gases/vapors are being pumped? (air, condensables, aggressive)
- Operating mode: Continuous or intermittent?
- Environment: Laboratory, industrial, hazardous area?
- Budget: New pump or reconditioned unit?
- Space constraints: Available installation space?
Why Atlas Copco GVD?
- ✓ Proven technology for over 30 years
- ✓ Deep ultimate vacuum in compact design
- ✓ Excellent reliability in demanding applications
- ✓ Worldwide availability of spare parts
- ✓ Comprehensive service network
- ✓ Low total cost of ownership
- ✓ Swedish quality and engineering excellence
- ✓ Versatile application range
Quality and Standards:
Atlas Copco GVD pumps meet the highest quality standards and are certified according to international norms. The pumps are manufactured in accordance with ISO 9001 and comply with CE directives and relevant safety standards.
Special Features GVD 275:
- ✓ High pumping speed for industrial applications
- ✓ Robust construction for continuous operation
- ✓ Optimized for metallurgical processes
- ✓ Integrated safety features
- ✓ Easy serviceability
- ✓ Long service life in demanding conditions