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Yamato Auto Still WG204 Small Capacity Water Purifier



Yamato’s Auto Still WG204 is an economical multi-purpose benchtop high purity water purifier with 20L tank capacity. It is equipped with a pre-treatment cartridge to increase the life span of all consumables.  In addition, it displays alerts for consumable replacements and keeps track of replacement history. The WG204 produces ASTM type 1 deionized water and type 2 distilled water kept in a 20L storage tank.


  • Pre-treatment cartridge removes bacteria, trihalomethane, residual chlorine, organic and dust
  • High performance ion-exchange resin cartridge (CPC-S, 4L) brings high purity water with low electric conductivity and TOC
  • Optional membrane filter at water sampling port
  • Displays replacement of consumables
  • Feed / Drain water connectors on both sides
Water purifying methodIon-exchange→Distillation
Water feedingOne-touch coupler water connection, with water stop valve
Water dischargingLeft / right selection for connecting hose
Distilled water production~1.5L/h
Distilled water delivery rate~1L/min
Deionized water delivery rate~1L/min
Range of productionContinuous production
CondenserHard glass
HeaterCeramic heater 1.2kW
Pre-treatment cartridge0.1µm diameter hollow fiber + activated carbon
Ion-exchange resin cartridgeCPC-S 4L x 1pc. (activated carbon high-purity cartridge)
Distilled / deionized water filterOptional
Leakage indicationWater supply solenoid valve forcibly shut off when water leakage detected
Distilled water tank capacity20L polyethylene tank
Distilled water UV sterilization--
Water sampling tray--
Multi-purpose distilled water sampling portRight side of main unit, 1pc.
Water level sensor2 steps reed switch
Raw water pressure range0.5~5 x 100kPa (0.5~5kgf/cm 2 )
Power source (50/60 Hz)AC115V 11A, AC220V 6A
External dimension*W600 x D575 x H780mm
Water level displayCommunication pipe water level indication
Water quality display5 steps conductivity LED indication
Other displayReplacement of consumable parts (ion- exchange resin cartridge)
AccessoriesFeed /drain water hose, connecting hose assembly, pre-treatment cartridge, ion-exchange resin cartridge, hose clamp

* Protrusions not included.

Click on the links below to download the associated PDFs.

Water Purifier Overview

WG204 Catalog

To download Operational Manual, visit our Technical Support Center