Membrane ADV made to be mounted directly onto a counterlung. The membrane ADV ensures a precise and exact addition of diluent whenever you need it. A minimalistic construction ensures the maximum reliability. A second stage valve is made from four parts and two sealing components. This makes it is virtually unbreakable and simple to maintain. The ADV incudes an isolator which can shut the ADV off if necessary. During the manufacturing only high quality materials were used to ensure a stable quality and function. All ADV types are fitted with a bayonet connector. Divesoft membrane ADV is an original product of the Divesoft company. To mount it on a third-party unit a purchase of an adapter is necessary. The membrane ADV is recommended to use together with item #1476 if this part is not already installed.