C. Left Post

MX Rebreather - Left Post

The left post, which is traditionally the roll off post, can be thought of as setup in the traditional UTD/DIR manner. It has the open circuit bailout hose that routes to the BOV open circuit second stage, the high pressure gauge hose, and an optional drysuit hose.

The thought process here is to put an OC regulator on the opposite post of the long hose regulator, so in the case of a right side tank or manifold failure where the diver isolates the diluent/bailout gas, bailout gas from both tanks is still available for either OC or CC operations - OC directly from the bailout valve, and CC by taking an OC breath and breathing it back into the loop.

The SPG, or pressure gauge, is kept on the left post like standard UTD/DIR, enabling us to read the pressure of the diluent/bailout tanks, both during normal diving operation and emergencies.

If a source of drysuit inflation is needed and the diluent/bailout has no Helium in it, then the drysuit inflation hose can be worn on the left post. This can be thought of as a secondary source of buoyancy control that is opposite the primary source - the wing - on the right post. If the drysuit hose is not attached to the post, a separate drysuit inflation tank or system should be used and will be worn on the left side, either using a hip mount or back gas mount attachments, like in standard UTD/DIR.