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Industrial Pumps


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  • The Putzmeister KOS pump is a sturdy, valveless two-cylinder piston pump designed for handling thick, high-solids materials.
  • The S-tube is operated by two robust plunger cylinders, offering wear adjustment and replacement capabilities, which enhance its resilience against foreign objects and dry running.
  • The KOS pump is versatile, suitable for materials like sewage sludge, oil sludge, bio-waste, high-density solids, and highly dewatered sewage sludge, ensuring reliability and availability.


  • Reinforced S-pipes and S-pipe piston for shearing off the foreign bodies
  • S-pipe with “ears” for a quiet delivery line at high pressure
  • Automatic reverse pumping function for preventing and automatically removing blockages Mixer paddles in the feeding device for homogenizing the materials
  • Agitators in the suction housing for extremely stiff and inhomogeneous materials. Different materials for the machine elements for handling abrasive and aggressive media (e.g. special steel for the foodstuff industry)
  • Different types of feeding devices on the suction side

  • Damping vessel pipeline flanges on suction inlet of hopper optional with agitator (horizontal or vertical)
  • Conveys coarse sludges or slurries with a high grain-size content
  • Low maintenance and less prone to wear and tear due to fewer moving parts
  • Less suction resistance due to high-volume unrestricted in-feed of material
  • Hydraulic circuit will always remain separate from material being pumped, even in the event of poor maintenance


In the KOS series, the intake (for connection of the delivery line) and the delivery cylinders are connected by an S-transfer tube. This enables a freeflowing conveyance of the material without the use of valves. Foreign bodies up to 2/3 of the size of the discharge outlet can be conveyed without any issue. For extreme applications, a wide range of task-specific components and functions are available from Putzmeister.

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