SF DSP SERIES

Product catalog summary

Overview
The WALTER SF DSP series is designed for maximum efficiency, utilizing a two-stage screw airend that provides 12% more compressed air than traditional single-stage machines. The series features a high-efficiency IE5 permanent magnet motor, offering a wide range of capacity control with low energy consumption, making it a cost-effective investment with potential payback in less than a year through energy savings.

Key Features

Oil Separation System: Ensures high air quality with a three-stage separation process, resulting in lower noise levels, reduced pressure drop, and low oil mist content in exhaust air (less than 3 ppm).
Cooling System: Equipped with a quiet and efficient axial fan.
Components: Utilizes high-quality components with proven extended service life.
Drivetrain: Features an efficient two-stage screw block and a highly efficient IE5 motor.

Advantages of Two-Stage Compression

Lower compression temperature, closer to isothermal conversion.
Reduced compression ratio minimizes leaks, increasing volumetric efficiency by 5-10%.
Optimized rotor speed for each stage (25-35 m/s).
Extended bearing life due to reduced forces, with durability increased fourfold.

Energy Efficiency
Comparison between single-stage and two-stage designs shows significant energy savings potential. The two-stage design reduces internal leakage and bearing load, enhancing efficiency and extending component life.

Technical Specifications
The document provides detailed specifications for various models in the SF DSP series, including pressure, efficiency, power, dimensions, weight, and noise levels. Models range from SF 22 DSP to SF 315 DSP, with varying capacities and performance metrics.

Standards and Compliance
Performance metrics are provided in accordance with ISO 1217:2009, Annex C, and sound pressure levels are measured according to ISO 2151:2004 and ISO 9614/2.

Catalog excerpts

SCREW COMPRESSORS SF DSP SERIES

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Double stage Screw Compressors The WALTER SF DSP series is the definition of maximum efficiency. The use of a two-stage screw airend is key to its benefits: it delivers an average of 12% more compressed air compared to traditional single-stage machines. Furthermore, the high-efficiency IE5 permanent magnet motor ensures a broad range of capacity control while maintaining consistently low energy consumption. With electricity accounting for over 80% of a compressor's total lifecycle costs, selecting the right technology is critical. An investment in an SF DSP compressor is highly cost-effective...

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1. The values stated refer to a pressure of 1 bar(a), 0% relative humidity, an air inlet temperature of 20°C, and a thermostatic valve setpoint of 71°C. WALTER Kompressortechnik reserves the right to make changes to its products without prior notice. 2. Compressor performance is given in accordance with ISO 1217:2009, Annex C. 3. Refers to sound pressure level with a tolerance of ±3 dB(A) measured in accordance with ISO 2151:2004 and ISO 9614/2.

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WALTER KOMPRESSORTECHNIK POLSKA

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SF DSP SERIES

SF DSP SERIES

Catalog excerpts

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