Iwaki logo
Iwaki metering pumps are the most efficient, effective electronic metering pumps on the market today. The attention to detail in the mechanical design and the quality of manufacturing merge to create a series of pumps better than the sum of their parts. Iwaki dosing pumps can self prime in seconds, with no operator action other than turning the pump on. This is achieved by superior valve design in conjunction with a uniquely engineered solenoid drive. The tightly guided ball check valves ensure a tight seal after each pulse, preventing loss of prime. A modular design enables change-out without having to replace the entire liquid end. The solenoid and pump housing are moulded together, (except EHE) making a structurally sound module which will last the life of the pump. The armature is supported at both ends, maximising stability/greatly increasing the bearing life.


Iwaki ES series dosing pumpIwaki EWN-R series dosing pumpIwaki EW series dosing pumpIwaki EW-Y series dosing pumpIwaki EHB-T series dosing pumpIwaki EHE series dosing pump
ES series
On-off control only. Needs to be driven by an external powered device, e.g. via a Walchem controller. Manually adjustable stroke rate only. Optional auto air vent (AAV) to help prevent outgassing, e.g. bleach, available for pumps with 4 x 6 mm tubing only. Also available is an optional high compression head (HC) to help control outgassing available on 11-16-21 sizes.
EWN-R series New
Universal power supply. Weatherproof. On-off control. Analog/ digital control. Pulse and count control. Pulse signal, (e.g. water meter) can be divided or multiplied to give less, or more chemical shots per pulse. High speed operation, up to 360 spm. High resolution with manually adjustable stroke rate (1 spm resolution) plus length for finer control. Three pump head options: 1. High compression for gaseous liquid transfer, (e.g. sodium hypochlorite). 2. High pressure for power injection, (e.g. boiler treatments). 3. High viscosity for viscous liquid transfer, (e.g. polymer liquids). Optional auto air vent (AAV) to help prevent outgassing, (e.g. sodium hypochlorite). Standard display shows either spm, litres/hr or gallons/hr dose rates.
EW series
Weatherproof. On-off control. Digital control. Pulse signal, (e.g. water meter) one chemical shot per pulse only, no multiply or divide facility. Manually adjustable stroke rate and length for finer control. Optional auto air vent (AAV) to help prevent outgassing, e.g. bleach, available for pumps with 4 x 6 mm tubing only. Also available is an optional high compression head (HC) to help control outgassing available on 11-16-21 sizes.
EW-Y series
Weatherproof. On-off control. Analog/ digital control. Pulse and count control. Pulse signal, (e.g. water meter) can be divided or multiplied to give less, or more chemical shots per pulse. Manually adjustable stroke rate and length for finer control. Optional auto air vent (AAV) to help prevent outgassing, e.g. bleach, available for pumps with 4 x 6 mm tubing only. Also available is an optional high compression head (HC) to help control outgassing available on 11-16-21 sizes.
EHB-T pump
On-off control. Timer control. Programmable timer: up to 8 times per day, weekly and 2 weekly. Manually adjustable stroke rate and stroke length for finer control. Optional auto air vent (AAV) to help prevent outgassing, e.g. bleach. Also available is an optional high compression head (HC) to help control outgassing available.
EHE series
Large output capacity. Weatherproof. On-off control. Analog/ digital control. Pulse and count control. Pulse signal, (e.g. water meter) can be divided or multiplied to give less, or more chemical shots per pulse. Manually adjustable stroke rate and length for finer control.