This unit was used with supply hose not from a UW cabin (as should originally be) but from surface in a deep freshwater dam. That is why an adaptor was used (the supply hose came from surface so it was connected in the upper part of the rebreather). I have removed the adapter by drilling off the screws (they were covered by a thick layer of epoxy) and that is why you can see a red tape inside the frame and white spots (I have not painted the plugs yet) on its outer side. I use the SMS1 recently as a SCR  wearing two 2-7 l bottles in stage positions with different mixtures (bottom mix and DC mix) with regulators on each and with the IP (changes a little with depth) from both leading into a manifold with exchangeable nozzles (I use nozzles from LPG ovens -0.13...0.32 mm diameter).  

In spite of opinions expressed in the rebreather-conference if possible I use the saver with 1/2 the volume of the original scrubber volume as can be seen in the detailed picture of the scrubber. As I am a physicist, I can calculate everything I need including nozzle diameters, dosing, concentrations as well as decompression (I use ZHL16 + Gradient Factors from Deco-planner).

Jan Jahns