OCB - Open Circuit Bailout Mouthpiece

RB110 - OCB Mouthpiece c/w Convoluted Hoses & Counterweights

European Patent No. 191 8001 A1         US Patent No. 200 8009 9018 A1

The OCB - Open Circuit Bailout Mouthpiece - enables the diver to bail out to open circuit easily, with one movement, without removing the mouthpiece from their mouth. The custom designed mouthpiece is extremely compact and lightweight, weighing only 350g in air and is neutrally buoyant in water. 

As standard the OCB is now fitted with the new RB116/1 OCB yellow lever (shown above) which allows simple and easy single-handed switching between Open Circuit and Closed Circuit modes. This is achieved by the diver applying pressure to the appropriate tab on the lever and squeezing against the adjacent protruding chrome fitting on the mouthpiece's low pressure hose connector. The reverse is achieved using the other tab and the chrome fitting. The lever tabs have been spaced so as to be in the ideal position to suit any hand size.

The OCB has undergone the extensive third party testing required for CE approval. It is rated to EN14143, the rebreather standard, EN13949, the nitrox standard and EN250, the regulator standard and in fact exceeds the requirements for this standard. The OCB can be used in fast flowing water, for instance when scootering.

AP Diving's patented dual valve technology allows gas to be fed from the left or right, facilitating individual configuration and is ready for use with high oxygen percentage gasses. Manufactured to a very high standard in our specialist facility, it can be fitted to existing units and is optional on the purchase of a new unit. As with all AP products, full spares and back up are available.

The OCB is available as standard with the convoluted hoses allowing the diver to easily interchange the mouthpiece that is connected to their Inspiration, Evolution or Evolution+ by simply disconnecting at the T-pieces.

PLEASE NOTE: The OCB+hose combination is sold with the current hose-to-T-piece fittings which have different size threads on the inhale side to the exhale. If you own an older AP rebreather which has the same threads both sides, please order by phone: 0044 (0)1326 563834. You can either purchase new style T-pieces (which have improved gas-flow) together with the standard OCB+hoses or alternatively, we will fit an old style fitting to the OCB inhale hose free-of-charge.

The OCB is supplied with a 1.5 metre low pressure hose as standard, using our reusable LP fittings which allow you to shorten the hose as required.