Can you provide more info or a link re the Piranha product? I can't find it on their site. Tnx.The splitter was stupidly expensive when I did it. Piranha now has the block (different brand) at a reasonable price.
(added)
Never mind; I found it.

High Pressure First Stage
Our high pressure "Y" adapter has a 7/16 male end to fit your high pressure hose and on the other end we have two "2" female ports "Both 7/16 threads" This is for use off your first stage! You screw this adapter into your first stage and then you can run 2 high pressure hoses!!! Nitrox Ready...
