LKN Series Metering Pumps

The LKN Series metering pump is the largest in the high performance line of pumps from Walchem. The LKN is a motor-driven, mechanically actuated diaphragm metering pump with a maximum capacity of 114 GPH (432 l/h) and a maximum pressure of 225 PSI (1.5 MPa).

The heart of the LKN is a compact and very reliable dual-cam system drive and worm gear reducer. Roller bearings and oil bath lubrication ensure outstanding durability and wear resistance in continuous operation. The LKN Series is ideal for chemical feed applications in a wide range of fields, including water treatment, chemical process, agriculture, mining and paper.



• Liquid Ends
  Drive from the gear reduction unit is directly transferred to the diaphragm. This design is
  economical, yet retains a high degree of versatility. Liquid ends are available in PVC, PVDF and
  316 SS for handling acids, bases, solvents, polymers and slurries.
• Stroke Adjustment
  Accurate and reliable stroke setting is accomplished with a micrometer dial of the springback stroke
  adjustment mechanism. This lockable mechanism is adjustable from 10 to 100%.
• Drive
  The LK utilizes a dual-cam system drive with a built-in worm gear type speed reducer. The
  aluminum bronze worm gear and the tapered roller bearing provide efficient transmission of
  motor power to the pump. This compact and rigid mechanism provides maximum wear resistance in
  continuous operation over long periods of time.
• Motors
  All of the standard models employ totally enclosed fan-cooled motors which are vertically mounted
  to save space. A variety of motor options are available, including explosion-proof and DC variable
  speed motors for external control by a 4-20 mA input signal.