The Hario Immersion Dripper is a coffee dripper with a valve in the inferior part. The dripper is a V60 traditional model and it uses size 02 paper-filters. The bottom is covered during the infusion, keeping the water inside. After the immersion, the valve is opened by pressing a switch that pours the coffee into a server. The switch stands in the open and closed positions so that you don’t have to keep pressing it while pouring the coffee.