Vacuubrand Vacuum Pumps
Oil-Free Diaphragm & Rotary Vane Vacuum Pumps for Chemistry, Physics & Laboratory Applications
Vacuubrand | Diaphragm Pump


MZ 2C NT
Two-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 7 mbar |
| With Gas Ballast | 12 mbar |
| Max. Pumping Speed | 2.0 m³/h |
| Number of Stages | 2 |
| Weight | 11.1 kg |
Vacuubrand | Diaphragm Pump


MD 4C NT
Three-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 1.5 mbar |
| With Gas Ballast | 3 mbar |
| Max. Pumping Speed | 3.4 m³/h |
| Number of Stages | 3 |
| Weight | 14.3 kg |
Vacuubrand | Rotary Vane Pump


RZ 6
Two-Stage Rotary Vane Pump
| Max. Pumping Speed (50Hz) | 5.7 m³/h |
| Ultimate Vacuum | 2 x 10² mbar |
| Without Gas Ballast | 4 x 10⁻&sup4; mbar |
| Voltage | 230V, 50-60Hz |
Vacuubrand | Rotary Vane Pump


RZ 9
Two-Stage Rotary Vane Pump
| Max. Pumping Speed (50Hz) | 8.9 m³/h |
| Max. Pumping Speed (60Hz) | 6.0 cfm |
| Without Gas Ballast | 4 x 10⁻&sup4; mbar |
| Voltage | 230V, 50-60Hz |
Vacuubrand | Rotary Vane Pump


RZ 2.5
Two-Stage Rotary Vane Pump
| Max. Pumping Speed (50Hz) | 2.3 m³/h |
| Ultimate Vacuum | 2 x 10⁻² mbar |
| Without Gas Ballast | 4 x 10⁻⁴ mbar |
| Voltage | 230V, 50-60Hz |
Vacuubrand | Diaphragm Pump


ME 1C
Single-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 100 mbar |
| Max. Pumping Speed | 0.7 m³/h |
| Number of Stages | 1 |
| Oil Free | Yes |
Vacuubrand | Diaphragm Pump


ME 2C NT
Single-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 70 mbar |
| Max. Pumping Speed | 2.1 m³/h |
| Number of Stages | 1 |
| Oil Free | Yes |
Vacuubrand | Diaphragm Pump


ME 4C NT
Single-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 70 mbar |
| Max. Pumping Speed | 3.9 m³/h |
| Number of Stages | 1 |
| Oil Free | Yes |
Vacuubrand | Diaphragm Pump


ME 8C NT
Single-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 70 mbar |
| Max. Pumping Speed | 7.1 m³/h |
| Number of Stages | 1 |
| Oil Free | Yes |
Vacuubrand | Diaphragm Pump


MD 1C
Three-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 2 mbar |
| Max. Pumping Speed | 1.3 m³/h |
| Number of Stages | 3 |
| Oil Free | Yes |
Vacuubrand | Diaphragm Pump


MZ 1C
Two-Stage Chemistry Diaphragm Pump
| Ultimate Vacuum | 12 mbar |
| Max. Pumping Speed | 0.75 m³/h |
| Number of Stages | 2 |
| Oil Free | Yes |
MZ 2C NT
Chemistry Diaphragm Pump – Two Stage

Full Specifications
| Article No. | 20732307 |
| Max. Pumping Speed 50 Hz | 2 m³/h |
| Max. Pumping Speed 60 Hz | 1.4 cfm |
| Ultimate Vacuum | 7 mbar / 5 torr |
| Ultimate Vacuum with Gas Ballast | 12 mbar / 9 torr |
| Number of Heads | 2 |
| Number of Stages | 2 |
| Operating Temperature Range | 10°C to 40°C |
| Storage Temperature Range | -10°C to 60°C |
| Max. Back Pressure (abs.) | 1.1 bar |
| Inlet/Outlet Connection | Hose nozzle DN 8-10mm |
| Rated Motor Power | 0.18 kW |
| Rated Motor Speed (50/60Hz) | 1500/1800 min⁻¹ |
| Protection Class | IP 40 |
| Dimensions [L x W x H] | 243 x 243 x 198 mm |
| Weight | 11.1 kg |
| Noise Level | 45 dBA |
| ATEX Conformity | II 3/- G Ex h IIC T3 Gc X (Internal Atm. only) |
| NRTL Certification | Yes |
| Mains Voltage/Frequency | 230V, 50-60Hz |
Key Features
| Feature | Description |
|---|---|
| Chemical Resistance | Outstanding chemical resistance and superior vapor tolerance; all media-contacted parts made of chemically resistant fluoroplastics |
| Diaphragm Design | Well-proven PTFE sandwich diaphragms for increased reliability and extended operating life |
| Gas Ballast Valve | Continuous condensate purge, increasing pumping capability for condensable vapors |
| Operation | Whisper quiet, low vibration, maintenance-free drive system |
| Applications | Rotary evaporators, vacuum concentrators, gel dryers, vacuum ovens, and general laboratory vacuum needs |
| Popularity | Most popular Vacuubrand chemistry diaphragm pump; basic pump for a complete family of pumping systems |
MD 4C NT
Chemistry Diaphragm Pump – Three Stage

Full Specifications
| Article No. | 20736400 |
| Max. Pumping Speed 50 Hz | 3.4 m³/h |
| Max. Pumping Speed 60 Hz | 2.2 cfm |
| Ultimate Vacuum | 1.5 mbar / 1.1 torr |
| Ultimate Vacuum with Gas Ballast | 3 mbar / 2.2 torr |
| Number of Heads | 4 |
| Number of Stages | 3 |
| Operating Temperature Range | 10°C to 40°C |
| Storage Temperature Range | -10°C to 60°C |
| Max. Back Pressure (abs.) | 1.1 bar |
| Inlet/Outlet Connection | Hose nozzle DN 8-10mm |
| Rated Motor Power | 0.25 kW |
| Rated Motor Speed (50/60Hz) | 1500/1800 min⁻¹ |
| Protection Class | IP 40 |
| Dimensions [L x W x H] | 328 x 243 x 198 mm |
| Weight | 14.3 kg |
| Noise Level | 45 dBA |
| ATEX Conformity | II 3/- G Ex h IIC T3 Gc X (Internal Atm. only) |
| NRTL Certification | Yes |
| Mains Voltage/Frequency | 230V, 50-60Hz |
Key Features
| Feature | Description |
|---|---|
| Chemical Resistance | Outstanding chemical resistance and superior vapor tolerance; all media-contacted parts made of chemically resistant fluoroplastics |
| Three-Stage Design | Combines high pumping speed with very low ultimate vacuum, suitable for challenging chemistry requirements |
| Diaphragm Design | Well-proven PTFE sandwich diaphragms for increased reliability and extended operating life |
| Gas Ballast Valve | Very good ultimate vacuum even with gas ballast; suitable for pumping condensable vapors of high-boiling solvents |
| Operation | Whisper quiet, very low vibration, maintenance-free drive system, easy service |
RZ 6
Rotary Vane Pump – Two Stage

Full Specifications
| Max. Pumping Speed 50 Hz | 5.7 m³/h |
| Max. Pumping Speed 60 Hz | 4.0 cfm |
| Ultimate Partial Vacuum (abs.), without Gas Ballast | 4 x 10⁻&sup4; mbar |
| Ultimate Vacuum (abs.) | 2 x 10⁻² mbar (approx.) |
| Mains Voltage/Frequency | 230V, 50-60Hz, CEE plug |
| Number of Stages | 2 |
Key Features
| Feature | Description |
|---|---|
| Design | Unusually compact design and low weight for pumps of this capacity |
| Best For | Wide range of laboratory and process applications requiring low ultimate vacuum at medium to increased gas flow rate |
| Applications | Fine vacuum range (1 to 10⁻³ mbar) – lyophilization, distillation on the Schlenk Line, residual drying in drying chambers, backing pump for high vacuum pumps |
| Supply | Pump oil filled and completely mounted, ready for use, with manual |
RZ 9
Rotary Vane Pump – Two Stage

Full Specifications
| Max. Pumping Speed 50 Hz | 8.9 m³/h |
| Max. Pumping Speed 60 Hz | 6.0 cfm |
| Ultimate Partial Vacuum (abs.), without Gas Ballast | 4 x 10⁻&sup4; mbar |
| Mains Voltage/Frequency | 230V, 50-60Hz, CEE plug |
| Number of Stages | 2 |
Key Features
| Feature | Description |
|---|---|
| Design | Powerful and compact design for higher-capacity vacuum needs |
| Best For | Process vacuum down to 10⁻³ mbar, larger volume systems needing higher pumping speed than RZ 6 |
| Applications | Fine vacuum range chemistry and physics applications, lyophilization, Schlenk Line distillation, backing pump for high vacuum systems |
| Supply | Pump oil filled and completely mounted, ready for use, with manual |

