Becker SV 400/2 3 kW Side Channel Blower
The Becker SV 400/2 3 kW is a double-stage side channel blower providing 195 m³/h nominal volume flow at 50 Hz together with substantial vacuum and positive-pressure capability.
At 50 Hz it reaches -440 mbar relative vacuum and +390 mbar positive pressure. At 60 Hz the corresponding 3.6 kW motor increases nominal capacity to 235 m³/h, with maximum vacuum of -400 mbar and maximum positive pressure of +350 mbar.
The double-stage construction makes the SV 400/2 particularly suitable where a moderate volume of process air must be maintained against greater system resistance than would normally be handled by a single-stage blower.
Becker SV side channel blower supply and technical support from Vacuum Pumps UK.
Need an SV 400/2 3 kW?
Send us the blower and motor nameplates or tell us the airflow and operating differential required.
We can help confirm the correct Becker configuration for the duty.
Blower Type
Double Stage
side channel blower
Nominal Capacity
195 m³/h
at 50 Hz
Maximum Vacuum
-440 mbar
relative at 50 Hz
Maximum Pressure
+390 mbar
relative at 50 Hz
Motor Power
3 kW
50 Hz motor
Double-Stage Performance with 195 m³/h Airflow
The SV 400/2 3 kW combines a nominal flow of 195 m³/h with the greater differential available from Becker’s double-stage side channel design. This makes it suitable for applications where system resistance is too high for a conventional low-pressure air-moving solution.
On vacuum duty the blower can operate to -440 mbar relative at 50 Hz. On positive-pressure duty it can reach +390 mbar. This gives the same blower platform considerable flexibility across suction, conveying, aeration and general process-air applications.
Air is repeatedly accelerated by the rotating impeller as it travels through the side channel. In the /2 configuration, the process air passes through two stages, allowing additional pressure energy to be developed before discharge.
The compression chamber operates without lubricating oil and without rubbing compression elements. The non-contact principle therefore provides clean process airflow while keeping routine maintenance requirements relatively low.
The blower should nevertheless be selected from its performance at the actual system duty. Pipework, filters, bends, valves and the process itself all contribute resistance and affect the volume flow available once the blower is installed.
Becker SV 400/2 3 kW Technical Specifications
At 50 Hz the corresponding motor rating is 3 kW and nominal volume flow increases to 195 m³/h. Maximum relative vacuum is -440 mbar and maximum positive pressure is +390 mbar.
| Frequency | Nominal Capacity | Maximum Vacuum | Maximum Pressure | Motor Power | Weight |
| 50 Hz | 195 m³/h | -440 mbar | +390 mbar | 3 kW | Approx. 53–53.5 kg |
| 60 Hz | 235 m³/h | -400 mbar | +350 mbar | 3.6 kW | Approx. 53–53.5 kg |
Vacuum and pressure figures are relative. Becker lists approximately 53–53.5 kg depending on the exact motor/configuration.
Key Features of the SV 400/2 3 kW
-440 mbar Vacuum
Strong suction capability suits vacuum systems requiring appreciable differential while retaining useful airflow.
+390 mbar Pressure
Positive-pressure performance supports conveying, aeration and process-air systems with significant resistance.
195 m³/h Capacity
Provides a useful volume of air for industrial machinery while maintaining the benefits of a double-stage configuration.
Oil-Free Air Path
No lubricating oil is required within the compression chamber, helping provide clean process airflow.
Non-Contact Compression
The impeller develops vacuum or pressure aerodynamically without rubbing compression elements.
Integrated Silencers
Inlet and discharge silencers are incorporated into the blower construction to help manage operating sound.
Industrial Vacuum and Pressure Applications
The SV 400/2 3 kW is suitable where approximately 195 m³/h nominal airflow is required together with substantial vacuum or pressure differential.
› Vacuum lifting and handling
› Vacuum fixing and clamping
› Printing and paper machinery
› Packaging equipment
› Automated material handling
› Pneumatic conveying
› Aeration systems
› Industrial drying
› Cooling and process air
› General mechanical engineering
SV 400/2 3 kW Supply and Application Support
Vacuum Pumps UK can assist with Becker SV 400/2 3 kW blower supply for replacement machinery, maintenance requirements and new industrial installations.
For a replacement unit, provide the Becker blower and motor nameplate details. The SV 400/2 is available with different motor powers and these configurations have significantly different pressure capability despite sharing the same nominal airflow.
For new systems, provide the airflow required together with the normal working vacuum or positive pressure. Pipework bore, filters, valves and process restriction can then be considered alongside the blower performance.
Choosing the blower from its actual duty point rather than nominal capacity alone helps avoid unnecessary motor size while ensuring sufficient system performance.
Accessories for Becker SV 400/2 Systems
Suitable filtration, relief valves and installation components help protect the blower and reduce unnecessary system losses.
Inlet Filters
Correctly sized filters protect the blower while limiting additional restriction on vacuum applications.
Vacuum Relief Valves
Vacuum relief can help limit differential if the inlet or process becomes more restrictive than intended.
Pressure Relief Valves
Pressure relief helps protect the blower where blocked or restricted discharge conditions could increase differential.
Installation Accessories
Flexible connectors, non-return valves and correctly sized pipework can be incorporated into the complete installation.
Becker SV 400/2 3 kW Service, Repair and Spare Parts
Although the compression process is non-contact, the motor, bearings, impeller and complete connected system all influence reliable blower performance.
Filter contamination or pipework restriction can increase operating differential and temperature. If performance changes, the surrounding system should therefore be checked alongside the blower itself.
Vacuum Pumps UK can assist with fault investigation, servicing and workshop repair of Becker SV side channel blowers.
Blower Service
Technical support for Becker blower maintenance and system performance issues.
Blower Repair
Workshop inspection and repair assessment for noisy, damaged or under-performing side channel blowers.
Spare Parts
Replacement filters and Becker spare parts are available through our sister company VacAir Superstore.
Becker SV 400/2 3 kW Frequently Asked Questions
What airflow does the Becker SV 400/2 3 kW provide?
Nominal volume flow is 195 m³/h at 50 Hz and 235 m³/h at 60 Hz.
What is its maximum relative vacuum?
Maximum vacuum is -440 mbar at 50 Hz and -400 mbar at 60 Hz.
What positive pressure can it produce?
Maximum relative pressure is +390 mbar at 50 Hz and +350 mbar at 60 Hz.
What does double stage mean?
Air passes through two successive side channel stages so that greater vacuum or pressure differential can be developed.
How does this version differ from the SV 400/2 4 kW?
The nominal 195 m³/h airflow is the same, but the 4 kW version provides considerably greater positive-pressure capability and maintains higher vacuum at 60 Hz.
Is the SV 400/2 oil-free?
Yes. No lubricating oil is required within the compression chamber.
Can Vacuum Pumps UK help select or replace an SV 400/2?
Yes. Send us the blower and motor nameplates or the required airflow and working differential and we can assist with identification and selection.
Need a Becker SV 400/2 3 kW Side Channel Blower?
Contact Vacuum Pumps UK for Becker blower supply, technical advice, accessories, servicing and repair.
Send us the existing blower details or the airflow and operating differential required.
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