ABV-2 with Visor for Full Face Mask

ABV-2 with Visor for Full Face Mask for use with AGA or Guardian FFM The ABV-1 Ambient Breathing Valve allows the user to breath ambient air on the surface. This helps conserve air while you wait for your dive buddy or while on the surface. The valve is easy to use, simply turn the valve counterclockwise one turn. Outside air will pass through the one way valve. It clears the lens then enters the (2) one way valves into the oral nasal cavity. You exhale through the 2nd stage regulator. When ready to dive, close the valve and you are on the way. The Ambient Breathing Valve allows the user to breathe ambient air at the surface, conserving your tank air. It is simple to use and its low profile keeps it out of the way. To use the device, while on the surface simply rotate the valve counterclockwise. The one way valve will open and allow air into the FFM The one way valve located on the inside of the FFM ensures that your exhaled air does not go back out the valve. Your exhaled air is sent out through the second stage regulator ensuring you do not get Co2 build up in the FFM. The valve also is forced closed when diving. The over pressure in the FFM assures that. If you forget to close the valve before diving, the valve disc will help keep water out. When the valve is closed, it has a low profile. The ABV is a must for all Search & Rescue Teams, Military Divers and Divers who spend a lot of the time in the water!