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TYPE KL-RS

hopper feed pump Type KL-RS

Pumps of the KL-RS series are hopper silo pumps for conveying and dosing dewatered sewage sludge with a high-solids content (DS) of 15% to 45%. These features make silo discharge pumps of the type KL-RS an indispensable core aggregate in modern sewage treatment plants.



  • excellent price/performance ratio
  • low Life Cycle Costs
  • large viscosity range
  • good pumping performance even with abrasive and fibrous materials in the media
  • high operational reliability
  • high pressure performance
  • long service life
  • configuration and length according to the customer's wishes
  • modular design for high flexibility and short downtimes for maintenance and repairs
  • almost pulsation-free conveyance
  • low servicing costs
  • optimum service life even with difficult media
  • various hopper sizes available
  • robust bearing pedestal with close-coupled drive and self-centering of the drive shaft (optionally with bare shaft)
  • insensitive to foreign matter
  • maintenance-friendly
  • modular design for short downtimes
  • direct flange-fitting of the pump to the bottom of the silo
  • double, maintenance-free shaft seal
  • rotor/stator quick-change facility
  • slide valves at the end of the hopper tunnel enable inspection and monitoring work to be carried out without having to dismantle the pump
  • split frame design for installation in confined conditions
  • shut-off slide valves enable changes of rotor/stator when the silo is full

The KL-RS hopper silo pump series processes media with a wide range of viscosities and delivers a good flow rate, even with media containing abrasive and fibrous additives. The slide valve design at the end of the hopper tunnel allows inspection and monitoring work of the hopper - without the need to disassemble the pump. Also, gate valves allow the rotors / stators to be exchanged, even if the silo is full.
  • dosing
  • to dryers

  • inorganic slurry
  • ferrite slurry
  • sewage sludge
  • refinery sludge
  • dewatered sewage sludge up to 45 % dry substance
  • organic sludge

  • driven by helical geared motor
  • fully developed, robust universal joint with pre-feeding screw
  • service-proven sealing systems
  • robust bearing pedestal for high force transduction
  • stator with s-cone inlet for optimum filling of the pumping chamber
  • various geometries and pump sizes
  • fully developed, robust universal joint
  • flexible drive selection
  • Feeding screw equipped with bridge breaker
  • available seal types: Stuffing box, mechanical seal, LWD mechanical face seal, lip seals, with and without rinsing or buffer fluid
Output 0 - 150 m³/h (at 25 - 100 rpm)
Dry substance Content max. 45%
Free ball passage up to 150 mm