An Iwaki America Company LK Series | Motor-driven metering pumps Overview The LK Series metering pump is the largest in the high performance line of pumps from Walchem Corporation. The LK 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 LK 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 LK Series is ideal for chemical feed applications in a wide range of fields, including water treatment, chemical process, agriculture, mining and paper. Summary of Key Benefits 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.

Ordering Information Pump Capacity/ Motor Series Pressure PUMP SERIES LKN = LKN Series motor-driven metering pump with NEMA 42C motor mounting flange CAPACITY/PRESSURE RATING See chart on this page MOTOR CODE D = 90VDC, 1 phase, 1/3 HP, 1750 RPM, TENV Frame 42C Variable Speed Motor, 115V Control 42C Variable Speed Motor, 230V Control Proof Motor, Class 1, Div.1, Group C & D N = No motor option / used with special motor See chart on this page Walchem recommends the installation of a pressure relief valve and a pulsation dampener in the discharge line of the LK Series pumps. Contact your Walchem...