WALTER SF 90 KSP Screw Compressor power input 90 kW, air delivery 6–16 m³/min at 8 bar, direct drive, inverter, 7-year warranty
Code: SF-90-KSPProduct detailed description
Screw compressor WALTER SF 90 KSP with DN 65 connection
The DN 65 connection and the 2,727 × 1,666 × 1,800 mm housing distinguish the SF 90 KSP from all smaller models in the range.
At 8 bar it delivers 6–16 m³/min, at 10 bar 5.2–13.7 m³/min, and at 13 bar up to 12.3 m³/min. The housing is shared with the SF 110 KSP and SF 132 KSP.
Configuration of this machine
- Single-stage screw airend · direct drive 1:1 · IE4 motor (IE5 optional) with inverter · submerged oil separator
- Three pressures: 8, 10 and 13 bar
- Housing shared with the SF 110 KSP and SF 132 KSP, weight 1,795 kg
- DN 65 connection, noise level 70 dB(A)
- Power supply 400 V / 3 / 50 Hz, WALTER CONTROLLER control unit


Who it suits
For industrial operation with variable demand, for which models with a G 2″ connection are no longer sufficient. The inverter adapts the output to the current air consumption, so the machine doesn't run at full capacity when demand doesn't require it.
When to choose a different model
Two-stage compression
The two-stage SF 90 DSP delivers up to 19.1 m³/min at 8 bar, 19% more, and is manufactured for the same three pressures.
More air in the same cabinet
The SF 110 KSP delivers up to 19.1 m³/min at 8 bar, weighs 2,124 kg, and has the same DN 65 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
- How does the connection differ from smaller models?
- The 55 kW and 75 kW models have a G 2″ thread, while the SF 90 KSP already has DN 65.
- In what range does the machine regulate its output?
- At 8 bar from 6 to 16 m³/min, at 10 bar from 5.2 to 13.7 m³/min.
The machine comes with a 7-year warranty covering the entire machine. Warranty terms, maintenance, and a comparison of all 19 models can be found in the category Screw compressors WALTER SF KSP: inverter and direct drive.
Ventilek advises
The three large machines in one casing also differ in weight: the SF 90 KSP weighs 1,795 kg, the SF 132 KSP weighs 2,281 kg. Check the floor load capacity according to the model you ultimately want to have.
Additional parameters
| Category: | Air compressors |
|---|---|
| Warranty: | 7 let |
| Compressor type: | Screw compressor |
| Pressure: | 8 bar, 10 bars, 13 bar |
| Air delivery: | 16,000 l/min |
| Pressure vessel volume: | It isn't |
| Connecting: | DN65 |
| Motor power: | 90 kW |
| Mains voltage: | 400/50 V/Hz |
| Lubrication: | Oleic |
| Noise: | 70dB(A) |
| Weight: | 1 795 kg |
| Engine: | Electric |
| Drive: | Direct |
| Air dryer: | No |
| Retrieved from: | Professional |
| Development: | Stationary |
| Inverter: | Yes |
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WALTER Kompressortechnik - Innovative Solutions for Compressors
- About the company WALTER: WALTER Kompressortechnik is a renowned manufacturer of air compressors and accessories, known for its quality, reliability and innovative technologies. The company focuses on providing highly efficient solutions for various industries.
- Product portfolio:
- Screw compressors: we offer a wide range of screw compressors that are designed for maximum energy efficiency and long life. Ideal for high demanding industrial applications.
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- Mobile compressors: lightweight and easily portable compressors that allow easy use in a variety of locations, ideal for construction and field work.
- Scroll and special compressors: provide quiet operation and are suitable for specific applications requiring minimal vibration and noise.
- Innovation and quality: WALTER emphasizes continuous development and improvement of its products to ensure maximum customer satisfaction. Their compressors are equipped with advanced technologies to optimise performance and save energy.
- Customer support and service: the company offers comprehensive service, including installation, maintenance and diagnostics, ensuring the long-term reliability and efficiency of their equipment.

