WALTER SF 250 DSP Screw Compressor power input 250 kW, air delivery 20.5–51.4 m³/min at 8 bar, two-stage, IE5 motor, 7-year warranty
Code: SF-250-DSP
Product detailed description
Two-stage screw compressor WALTER SF 250 DSP
SF 250 DSP is the second largest two-stage machine in the series. At 8 bar it delivers up to 51.4 m³/min, at 10 bar 45.3, and at 13 bar 39.01 m³/min.
At the same input power of 250 kW, the fixed-speed machine SK 250 KSP delivers 41 m³/min at 8 bar, while SF 250 DSP delivers 25% more.
Configuration of this machine
- Two-stage screw block · direct drive 1:1 · IE5 magnetic motor with inverter
- Three pressures: 8, 10 and 13 bar
- Housing 4,400 × 2,240 × 2,340 mm, weight 6,450 kg
- Connection DN 100, noise level 78 dB(A)
- Power supply 400 V / 3 / 50 Hz, WALTER CONTROLLER control unit
Who it suits
For large operations where the compressor runs without interruption and demand varies. The control range at 8 bar is 20.5–51.4 m³/min, so the inverter covers large fluctuations in consumption.
When to choose a different model
Lower output
SF 185 DSP delivers up to 36.6 m³/min at 8 bar and weighs 4,650 kg.
The largest model in the series
SF 315 DSP delivers up to 66.2 m³/min at 8 bar, in a housing measuring 3,700 × 2,400 × 2,300 mm, with a DN 125 connection.
What the parameters imply — calculated values
The values are calculated from the maximum air delivery at 8 bar and serve for comparing models with each other, not as a guaranteed value.
Frequently asked questions
- Is there also a single-stage model with an inverter at 250 kW?
- No. With an inverter, 250 kW output is only available as the two-stage SF 250 DSP. The closest single-stage models with an inverter are 220 kW and 315 kW.
- How much does the machine weigh?
- 6,450 kg.
The machine is covered by a 7-year warranty on the entire machine. Warranty terms, maintenance, and a comparison of all 13 models can be found in the category WALTER SF DSP screw compressors: two-stage compression.
Ventilek advises
For machines above 200 kW, decide based on the consumption curve, not on input power alone. Measure how your demand changes during a shift.
Additional parameters
| Category: | Air compressors |
|---|---|
| Warranty: | 7 let |
| Compressor type: | Screw compressor |
| Pressure: | 8 bar, 10 bars, 13 bar |
| Air delivery: | 51 400 l/min |
| Pressure vessel volume: | It isn't |
| Connecting: | DN100 |
| Motor power: | 250 kW |
| Mains voltage: | 400/50 V/Hz |
| Lubrication: | Oleic |
| Noise: | 78 dB(A) |
| Weight: | 6 450 kg |
| Engine: | Electric |
| Drive: | Direct |
| Air dryer: | No |
| Retrieved from: | Professional |
| Development: | Stationary |
| Inverter: | Yes |
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