The EK series electromagnetic metering pumps are constructed to be perfectly watertight. Conventional electromagnetic pump are thought to be vulnerable to exposure to external liquids, which means that they are unsuitable for outdoor use. To address this weak point, we have done our best to make the controller unit and the drive unit fully watertight and moisture proof. As a result, the EK series is the world's first plastic resin electromagntic metering pumps that are capable of being used outddoors. They can be used widely in various facilities and plants for water treatment, surface treatment and do forth.