Becker SV 7.330/2 3kW Side Channel Blower
The Becker SV 7.330/2 is a two-stage side channel blower delivering 156 m³/h nominal capacity at 50 Hz, with maximum relative vacuum of -400 mbar and maximum positive pressure of +475 mbar.
Powered by a 3kW motor, the SV 7.330/2 combines moderate air volume with considerably stronger differential capability than is normally associated with a comparable single-stage configuration. The two-stage arrangement makes this blower particularly relevant where the process presents substantial resistance on either the vacuum or pressure side.
Regenerative side channel compression develops vacuum and positive pressure without rubbing carbon vanes and without lubricating oil in the process-air chamber. This provides an oil-free air path for suitable industrial handling, conveying, packaging and process-air duties.
Becker side channel blower supply and technical support from Vacuum Pumps UK.
Replacing a Becker SV 7.330/2?
Send us photographs of the complete blower together with clear images of the Becker identification plate and electric motor nameplate.
For a two-stage blower, confirming the required operating differential as well as airflow is particularly important when assessing a replacement.
Blower Type
Two Stage
side channel blower
Nominal Capacity
156 m³/h
at 50 Hz
Maximum Vacuum
-400 mbar
relative at 50 Hz
Maximum Pressure
+475 mbar
relative at 50 Hz
Motor Power
3kW
50 Hz motor
Two-Stage Performance for Higher Differential Duties
The defining characteristic of the Becker SV 7.330/2 is the combination of 156 m³/h nominal capacity with maximum differential figures of -400 mbar vacuum and +475 mbar positive pressure. Rather than concentrating on very high free-air volume, this two-stage configuration is designed around developing greater differential where the application presents appreciable resistance.
On vacuum applications, the -400 mbar maximum relative vacuum provides strong suction capability for industrial handling, extraction and machine processes. Used on its pressure side, the blower can develop up to +475 mbar relative positive pressure, giving it useful capability for conveying and process systems where air must be delivered against significant back pressure.
The two-stage configuration is important to this performance. Air is subjected to regenerative compression through successive stages, allowing a greater total pressure difference to be developed than would typically be expected from a single-stage arrangement focused on similar air volume.
Within each regenerative stage, the rotating impeller repeatedly accelerates the air as it passes around the side channel. Energy is progressively transferred to the air, producing suction at the blower inlet and positive pressure at its discharge.
The compression process does not depend upon sliding carbon vanes and there is no requirement for lubricating oil within the process-air chamber. For suitable applications, the SV 7.330/2 therefore provides oil-free airflow together with the higher differential capability associated with its two-stage arrangement.
Becker SV 7.330/2 Technical Specification
This 3kW SV 7.330/2 configuration provides 156 m³/h nominal capacity at 50 Hz, with maximum relative vacuum of -400 mbar and maximum relative positive pressure of +475 mbar.
| Model | Stage | Nominal Capacity 50 Hz |
Maximum Vacuum | Maximum Pressure | Motor Power |
| SV 7.330/2 | Two Stage | 156 m³/h | -400 mbar | +475 mbar | 3kW |
The nominal capacity and maximum differential figures represent different operating conditions. The SV 7.330/2 should not be interpreted as delivering its full 156 m³/h nominal capacity while simultaneously operating at -400 mbar vacuum or +475 mbar positive pressure.
As the resistance of the connected system increases, the blower develops greater differential and the available airflow changes along its performance characteristic. Correct selection therefore requires the airflow required at the intended working vacuum or pressure to be considered.
This distinction is particularly important with a two-stage blower. The higher differential capability may be the reason the configuration has been selected, so replacing it purely on nominal airflow or motor power could result in a blower that cannot reproduce the required duty.
SV 7.330/2 Performance Characteristics
156 m³/h Airflow
Moderate nominal capacity for industrial machinery and processes where differential capability is as important as free-air volume.
-400 mbar Vacuum
Strong suction capability for vacuum applications operating against appreciable system resistance.
+475 mbar Pressure
High positive-pressure differential for conveying and process-air duties requiring air delivery against substantial resistance.
Two-Stage Configuration
Successive regenerative compression stages enable the blower to develop greater vacuum and pressure differential.
3kW Motor
This SV 7.330/2 configuration uses a 3kW electric motor at 50 Hz to support its airflow and two-stage differential performance.
Oil-Free Air Path
Regenerative compression operates without rubbing carbon vanes or lubricating oil within the process-air chamber.
Applications for the Becker SV 7.330/2
The higher differential available from the two-stage SV 7.330/2 makes it particularly relevant to applications where the blower must overcome greater resistance than a lower-differential machine. It can be used for either vacuum or positive-pressure operation where the required duty falls within its performance range.
› Vacuum handling and lifting systems
› Pneumatic conveying applications
› Packaging and production machinery
› Industrial vacuum extraction
› Printing and paper machinery
› Drying and process-air systems
› Air delivery through restrictive systems
› Water Aeration
The higher maximum differential does not remove the need to establish the actual duty point. A process requiring 156 m³/h at relatively low resistance is fundamentally different from one operating close to -400 mbar vacuum or +475 mbar pressure.
For applications involving restrictive filtration, longer pipe runs or process equipment with appreciable resistance, the pressure losses through the complete installation should be considered when determining the required blower performance.
Replacing an Existing Becker SV 7.330/2
When replacing an SV 7.330/2, it is important to recognise that its two-stage construction may have been selected specifically because the application requires greater vacuum or positive-pressure differential. A blower with apparently similar airflow and motor power may not necessarily provide equivalent performance.
Send Vacuum Pumps UK photographs of the complete blower together with clear images of the Becker identification plate and motor nameplate. Photographs showing the inlet, discharge and surrounding pipework can also help us understand how the blower is incorporated into the system.
Tell us whether the blower is operating on vacuum or positive pressure and what function it performs. If the normal operating vacuum, pressure or required airflow is known, include this information with the enquiry.
These details allow the replacement requirement to be considered against the actual operating duty as well as the original blower identification.
Accessories and System Protection
Because the SV 7.330/2 is capable of developing substantial vacuum and pressure differential, correct system protection is important. Filtration, relief devices and pipework should protect the blower while allowing it to operate within the intended duty range.
Inlet Filtration
Suitable filtration helps protect the regenerative stages from airborne contamination while maintaining adequate flow area for the application.
Relief Protection
Correctly selected vacuum or pressure relief can limit differential if pipework becomes obstructed, a valve closes or filtration becomes excessively restrictive.
Silencers
Suitable inlet and discharge silencers can help control transmitted air noise while maintaining an appropriate flow path.
Pipework & Connections
Correct pipe sizing and suitable fittings help control unnecessary pressure losses and allow the blower to operate closer to its intended duty point.
SV 7.330/2 Service, Repair and Spare Parts
The regenerative compression principle avoids rubbing carbon vanes within the blower chamber, but bearings, the electric motor and other mechanical components remain subject to wear during industrial operation.
Changes in noise, vibration or operating temperature should be investigated. Reduced airflow or failure to achieve the expected vacuum or pressure can also be caused by external factors such as blocked filtration, leakage, pipework restrictions or changes in the process.
On a two-stage installation, it is particularly useful to understand whether a reported performance problem occurs under vacuum, positive pressure or both. This can help distinguish blower condition from changes elsewhere in the system.
Vacuum Pumps UK can inspect Becker side channel blowers in our workshop, investigate mechanical and performance problems and advise on the appropriate service, repair or replacement route.
Workshop Inspection
Assessment of Becker side channel blowers to investigate mechanical condition, abnormal noise, vibration and reported loss of performance.
Service & Repair
Following inspection, our engineers can advise on servicing and repair options or whether replacement should be considered.
Becker Parts
Becker filters and replacement components can also be supplied through VacAir Superstore for blower and system maintenance.
Becker SV 7.330/2 FAQs
What is the capacity of the Becker SV 7.330/2?
The nominal capacity of this 50 Hz configuration is 156 m³/h.
What maximum vacuum does the SV 7.330/2 produce?
The listed maximum relative vacuum is -400 mbar.
What maximum positive pressure does the SV 7.330/2 produce?
The listed maximum relative positive pressure is +475 mbar.
What motor power does this SV 7.330/2 use?
The configuration covered on this page uses a 3kW electric motor at 50 Hz.
Is the Becker SV 7.330/2 a two-stage side channel blower?
Yes. The SV 7.330/2 uses a two-stage regenerative side channel arrangement.
Why use a two-stage side channel blower?
A two-stage arrangement allows greater vacuum or positive-pressure differential to be developed, making it useful where the application presents substantial resistance and a single-stage blower may not provide the required differential.
Can the SV 7.330/2 be used for both vacuum and pressure?
Yes. It can be applied on either the suction or discharge side of a suitable system. This configuration has listed maximum relative vacuum of -400 mbar and maximum positive pressure of +475 mbar.
Does the SV 7.330/2 use carbon vanes or oil for compression?
No. It uses regenerative side channel compression rather than rubbing carbon vanes, and lubricating oil is not required within the process-air chamber.
Does the blower deliver 156 m³/h at -400 mbar or +475 mbar?
No. Nominal capacity and maximum differential represent different operating points. Available airflow changes as the vacuum or positive-pressure differential increases.
Can Vacuum Pumps UK help replace an existing SV 7.330/2?
Yes. Send us photographs of the complete blower, Becker identification plate and motor nameplate together with details of the application and any known operating vacuum, pressure or airflow.
Becker SV 7.330/2 Supply, Replacement or Repair
Talk to Vacuum Pumps UK about an existing SV 7.330/2 or a new industrial application requiring higher vacuum or positive-pressure differential.
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