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Large Volume Mechanically-actuated Diaphragm Metering Pumps 3240 l/h

Walchem LK-Series

Outputs up to 856 GPH (3240 l/h) and maximum pressures of 220 PSI (1.5 MPa)

LK Large Volume Chemical Feed Pump
  • Description
  • Specification
  • Downloads

The Iwaki LK Series metering pumps are motor-driven, mechanically-actuated diaphragm metering pumps. This larger Series can achieve outputs up to 856 GPH (3240 l/h) and maximum pressures of 220 PSI (1.5 MPa). The LK Series is ideal for large chemical feed applications in a wide range of fields, including water treatment, chemical process, agriculture, mining and paper.

Key Benefits:

  • High Performance & Versatile Design – The LK series has a discharge accuracy (repeatability) that is within ±2% FS. Reliability has been enhanced with the improvement in the linearity of the stroke and the discharge ratio of each stroke.
  • Drive- The heart of the LK is the dual-cam drive with a built-in worm gear type speed reducer. This compact & rigid mechanism, provides maximum wear resistance in continuous operation over long periods of time.
  • The LK-A, LK-B, and LK-C series pump are designed to be fit with IEC general-purpose, vertically mounted TEFC outdoor-use motors, providing different voltage and enclosure options, including VFD-ready and explosion-proof designs.

With market proven results and years of experience, Iwaki has employed state-of-the-art pump technology in the development of the LK Series metering pumps. A robust design transfers rotational force from the motor to the diaphragm via a compact drive unit. The pump drive unit is a worm gear and dual-cam drive gear box design. The advantage of this economical design is reliability, quality, performance, and ease of operation.

Various materials and types

The LK Series offers a variety of sizes to fit a range of small to very large injection flow rates. Several material configurations and flexible motor options combine to satisfy a multitude of applications.

High performance and versatile design

The LK series has a discharge accuracy (repeatability) that is within ±2% FS. Reliability has been enhanced with the improvement in the linearity of the stroke and the discharge ratio of each stroke.

Large Volume Chemical Feed Pump

Liquid End

A diaphragm is attached to the gear reduction unit being driven by an attached motor. Displacement of volume by the diaphragm in the pump head, in combination with check valves, makes for a reliable positive displacement metering pump. Motor driven mechanical metering pumps are both economical and simple, yet retain a high degree of versatility. The LK Series pumps have flange connections available, improving installation flexibility. Three main pump head materials are PVC, stainless steel, or PVDF*. A wide range of chemicals, such as acid, alkalines, organic solvents, slurry, and high-temperature liquids, can be effectively pumped with the LK series. Six different liquid end materials combinations can be chosen to best fit the application. *Please contact your distributor for PVDF models.

Stroke adjustment

Output of flow is regulated by changing the volume per stroke with a micrometer Stroke Length dial. Accurate and reliable adjustments are made possible with the spring-back mechanism of the LK design ensuring repeatable performance.

Motor

The LK-A, LK-B, and LK-C series pump are designed to be fit with general-purpose, vertically mounted TEFC outdoor-use motors, providing different voltage and enclosure options, including VFD-ready and explosion-proof designs.

Drive component

The heart of the LK series is the dual-cam gearbox with a highly reliable, built-in worm gear type reduction unit. This compact and rigid drive unit achieves maximum wear resistance during continuous operation. The aluminum bronze worm gear designed with a large module ratio combined with a tapered roller bearing used at the end of the worm gear enables efficient transmission of motor power to the gearbox. A fully enclosed oil bath lubrication system keeps wear to a minimum while permitting outdoor installation. The LK Series was designed for durability during continuous operation providing long life.

Specifications

LK Pump Spec ChartNote 1: The capacity is the value when maximum discharge pressure is applied (with pure water at room temperature). The value may be higher than shown in the table if the discharge pressure is lower. Performance may vary and is based on installation conditions and liquid characteristics.
Note 2: VS type connection is different in some models from standard.
Note 3: The weight is the estimated value when installed with a totally enclosed fan-cooled outdoor motor.
• Standard accessory : A base is furnished to all LK-A, LK-B and LK-C models.
• Coating color : F37-60D (JPMA)
Note 4: IEC B5 flange motor mount. Use vertical mount rated, 1800 RPM motor.

pump wet end
Pump Order Chart

The Iwaki LK Series metering pumps are motor-driven, mechanically-actuated diaphragm metering pumps. This larger Series can achieve outputs up to 856 GPH (3240 l/h) and maximum pressures of 220 PSI (1.5 MPa). The LK Series is ideal for large chemical feed applications in a wide range of fields, including water treatment, chemical process, agriculture, mining and paper.

Key Benefits:

  • High Performance & Versatile Design – The LK series has a discharge accuracy (repeatability) that is within ±2% FS. Reliability has been enhanced with the improvement in the linearity of the stroke and the discharge ratio of each stroke.
  • Drive- The heart of the LK is the dual-cam drive with a built-in worm gear type speed reducer. This compact & rigid mechanism, provides maximum wear resistance in continuous operation over long periods of time.
  • The LK-A, LK-B, and LK-C series pump are designed to be fit with IEC general-purpose, vertically mounted TEFC outdoor-use motors, providing different voltage and enclosure options, including VFD-ready and explosion-proof designs.

With market proven results and years of experience, Iwaki has employed state-of-the-art pump technology in the development of the LK Series metering pumps. A robust design transfers rotational force from the motor to the diaphragm via a compact drive unit. The pump drive unit is a worm gear and dual-cam drive gear box design. The advantage of this economical design is reliability, quality, performance, and ease of operation.

Various materials and types

The LK Series offers a variety of sizes to fit a range of small to very large injection flow rates. Several material configurations and flexible motor options combine to satisfy a multitude of applications.

High performance and versatile design

The LK series has a discharge accuracy (repeatability) that is within ±2% FS. Reliability has been enhanced with the improvement in the linearity of the stroke and the discharge ratio of each stroke.

Large Volume Chemical Feed Pump

Liquid End

A diaphragm is attached to the gear reduction unit being driven by an attached motor. Displacement of volume by the diaphragm in the pump head, in combination with check valves, makes for a reliable positive displacement metering pump. Motor driven mechanical metering pumps are both economical and simple, yet retain a high degree of versatility. The LK Series pumps have flange connections available, improving installation flexibility. Three main pump head materials are PVC, stainless steel, or PVDF*. A wide range of chemicals, such as acid, alkalines, organic solvents, slurry, and high-temperature liquids, can be effectively pumped with the LK series. Six different liquid end materials combinations can be chosen to best fit the application. *Please contact your distributor for PVDF models.

Stroke adjustment

Output of flow is regulated by changing the volume per stroke with a micrometer Stroke Length dial. Accurate and reliable adjustments are made possible with the spring-back mechanism of the LK design ensuring repeatable performance.

Motor

The LK-A, LK-B, and LK-C series pump are designed to be fit with general-purpose, vertically mounted TEFC outdoor-use motors, providing different voltage and enclosure options, including VFD-ready and explosion-proof designs.

Drive component

The heart of the LK series is the dual-cam gearbox with a highly reliable, built-in worm gear type reduction unit. This compact and rigid drive unit achieves maximum wear resistance during continuous operation. The aluminum bronze worm gear designed with a large module ratio combined with a tapered roller bearing used at the end of the worm gear enables efficient transmission of motor power to the gearbox. A fully enclosed oil bath lubrication system keeps wear to a minimum while permitting outdoor installation. The LK Series was designed for durability during continuous operation providing long life.

Specifications

LK Pump Spec ChartNote 1: The capacity is the value when maximum discharge pressure is applied (with pure water at room temperature). The value may be higher than shown in the table if the discharge pressure is lower. Performance may vary and is based on installation conditions and liquid characteristics.
Note 2: VS type connection is different in some models from standard.
Note 3: The weight is the estimated value when installed with a totally enclosed fan-cooled outdoor motor.
• Standard accessory : A base is furnished to all LK-A, LK-B and LK-C models.
• Coating color : F37-60D (JPMA)
Note 4: IEC B5 flange motor mount. Use vertical mount rated, 1800 RPM motor.

pump wet end
Pump Order Chart