Cast iron WK550 aggregate on base frame Power consumption 3 kW, suction capacity 550 l/min, pressure 10 bar, without air receiver, voltage 400/50 V/Hz

Code: WK550-PLATE
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WK 550 kompresor waůter pistovy vzduch tlak press air
€676,91 / pcs €559,43 excl. VAT
up to 14 days
Delivery to:
19.05.2026
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The WK550-PLATE reciprocating compressor with a cast iron three-cylinder unit delivers 4 HP, 10 bar pressure and an effective displacement of 440 l/min, making it the ideal solution for industrial applications, garages and workshops. The three-phase power supply (400 V) ensures stable performance even during prolonged operation. The stand-alone unit without an air handler allows easy integration into an existing air handling unit or replacement of an old compressor unit. The low speed (~1,200 rpm) contributes to quieter operation, less vibration and longer machine life. Powerful and reliable aggregate for individual assemblies and industrial use!

Detailed information

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Product detailed description

The Walter WK550-PLATE cast iron compressor unit (on a base frame) represents a powerful industrial solution built on three-cylinder technology (3W). This model is designed for users who require high volumetric airflow and maximum reliability when connecting to existing distribution systems or external pressure vessels.

Three-cylinder power with cast iron durability

The WK550-PLATE model utilizes the advantages of three cylinders, which allow for more efficient cooling and smoother operation of the unit, thereby reducing vibrations and mechanical stress on the engine.

1️⃣ Design improvements of the GK series

3W Cast Iron Unit – The three-cylinder arrangement ensures excellent thermal stability and a high intake capacity of 550 l/min while maintaining compact dimensions.
Low Speed (1,202 rpm) – The slow-running concept is key to extreme bearing life and minimal wear on piston rings.

2️⃣ Modern Filtration and Tightness

Steel Covers and Grille Filters – A new generation of suction filters with a metal insert guarantees clean air for the unit, even in demanding industrial environments, and resists mechanical damage.
Reinforced valves and seals – Ensure high compression efficiency and minimize oil leakage into compressed air.

Litinový tříválcový kompresorový agregát Walter WK550 na rámu

Technical Parameters Walter WK550-PLATE (400V)

Suction power 550 l/min
Effective Discharge 440 l/min
Maximum working pressure 10 bars
Unit speed 1,202 rpm
Motor power 3.0 kW
Power supply voltage 400 V / 50 Hz
Number of cylinders 3W (cast iron)

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Ideal application of the WK550-PLATE model

Thanks to its robustness and three-cylinder design, this unit is predestined for stable air supply:

  • 🔹 Industrial Production – Ideal as a booster unit or part of central air distribution.
  • 🔹 Larger Car and Tire Service Centers – Powering demanding pneumatic tools, tire changers, and lifts.
  • 🔹 Building Own Compressor Stations – A perfect base for mounting on large stationary air receivers (270l and more).
  • 🔹 Modernizing Operations – Direct replacement for older and less efficient two-cylinder blocks.
Záruční servis a náhradní díly pro litinové kompresory Walter
Ventilek's Tip: The WK550 is quite a "three-cylinder symphony". Having three cylinders means the unit cools better and runs beautifully balanced. Notice the low RPMs – Walter is betting on longevity here, not on "chasing" performance at the cost of overheating. If you are building your own system, don't forget a quality check valve and sufficient pipe cross-section so this three-cylinder can breathe properly!

Additional parameters

Category: Compressors for all applications - hobby and industrial
Warranty: 3 years
Compressor type: Piston compressor
Pressure: 10 bars
Suction power: 550 l/min
Displacement: 440 l/min
Pressure vessel volume: It isn't
Motor power: 3.0 kW
Mains voltage: 400/50 V/Hz
Speeds: 1,202 rpm
Number of cylinders: 3
Number of grades: 1 – single-stage compressor
Lubrication: Oleic
Noise: 80dB(A)
Dimensions: 720 x 420 x 430 mm
Weight: 54 kg
Engine: Electric
Soundproofed: No
Drive: V-belts
Air dryer: No
Retrieved from: Professional
Development: Stationary

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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.
    • Reciprocating compressors: these compressors are robust and reliable, suitable for smaller applications and workshops where high flexibility and low running costs are required.
    • 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.

WALTER Kompressortechnik - Špičkové Kompresory pro Průmyslové AplikaceObjevte vysoce kvalitní vzduchové kompresory od WALTER Kompressortechnik. Nabízíme šroubové, pístové, mobilní a speciální kompresory navržené pro maximální účinnost a spolehlivost. Ideální řešení pro průmyslové i menší dílenské aplikace. Využijte moderní technologie pro úsporu energie a dlouhou životnost. Navštivte naši stránku pro více informací o našich produktech a profesionální servisní podpoře.