AP Valves Divers Closed SMB EOL The twin chamber construction can

The twin chamber construction can be used for safety back-up and/or filled partly with water to ensure a perfect upright position even under the most severe conditions

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AP Valves Divers Closed SMB EOL The twin chamber construction canAP Valves Divers Closed SMB is the self sealing version of AP Valves Buddy SMB, which has been a mainstay of any divers' kit since early 90's. At first look this SMB affectionately referred to by most divers as a "safety sausage" looks like an open ended from the bottom but as soon as you fill it with air, the internal baffle is foced shut, which prevents it from deflating on the surface. Very clever feature indeed! You don't need to worry about the