Metering Pumps



Walchem and Iwaki joined forces to develop the most innovative and comprehensive metering pump product line in the world. Iwaki metering pumps are designed for a broad range of applications, and are manufactured to the highest quality standards that exceed even the toughest customer expectations. Our commitment to new product development and innovation has resulted in many industry firsts, including EK - the world’s first IP67 waterproof solenoid metering pump.

Featuring five great pump series, EZ, EWN, EK, EHE, and EJ, E Series metering pumps are powered by advanced microprocessorbased electronics and superior mechanical design. With capacities up to 20 GPH (76 l/h) and pressures to 290 psi (20 bar), E Series has a pump that will fit most any industrial, municipal, or agricultural water or wastewater application. And, the entire E Series pump line is backed with a comprehensive 2-year warranty that covers the entire pump, including the liquid end and diaphragm.

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EJ Pumps
EJ Series
1.3 GPH and 175 PSI
The EJ-B Series metering pumps are the newest addition to Walchem metering pump line. With ouptuts up to 1.3GPH (4.8LPH) and pressures up to 175PSI (1.2MPa), the EJ series offers a lower cost entry-level pump while providing improved features and additional control options.
EZ Pumps
EZ Series
6.3 GPH and 150 PSI
EZ pumps have outputs to 6.3 GPH and pressure capabilities to 150 PSI. The compact size and simple control make it ideal for OEM applications, water treatment, car wash and other industrial applications.
IX Pumps
IX Series
80 GPH and 250 PSI
The IX Series pumps are extremely efficient motor driven pumps with a ±1% full scale accuracy. Standard with several control methods, the IX Series pumps provide a solution to a variety of applications all in one pump.
High Viscosity Pumps
HV High Viscosity
2.3 to 8 GPH and 73 PSI
The EH-HV Series is specifically designed to accurately feed high viscosity chemicals.  Equipped with machined PVC liquid ends and spring loaded stainless steel valve balls, the HV series is designed for superior valve action and performance.
HRP Pumps
High resolution DC metering pumps designed specifically for OEM applications, the HRP pump has been sized for easy integration into many types of systems.

Pump Selection Program

Simplfies the selection of a metering pump for your application based on flow, pressure, voltage and control requirements.

EWN-R Pumps
EWN Series
6.7 GPH and 290 PSI
The EWN Series electronic metering pumps offer superior high speed dosing capability with more standard features. The flexibility of the EWN pump enable it be integrated into virtually any chemical feed application using a universal-voltage, digital controller with an expanded set of control features.
EHE Pumps
EHE Series
20 GPH and 150 PSI
EHE pumps have outputs up to 20 gallons per hour and pressure capabilities to 150 PSI. Combining the EHE performance and a turn-down ratio of 1800:1 yields one of the most versatile pumps on the market today.
LK Pumps
LKN Series
114 GPH and 225 PSI
In a class by itself - the LK is a motor driven, mechanically actuated diaphragm metering pump with a maximum capacity of 114 GPH (432 l/h) and maximum pressure of 225 PSI (1.5 MPa).
Large LK Series
856 GPH and 145 PSI
Ideal for large chemical feed applications. This larger LK Series can achieve outputs up to 856 GPH (3240 l/h) and maximum pressures of 220 PSI (1.5 MPa).

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