Hi Woody, John could of come up with the ideal thing, but what I see as the fittings looks as if this system is designed to be fed from an air compressor which would need filters and water traps for safe, clean air.
I've seen something on the same lines as this system, but it's a motor and pump that could be on a belt or dropped into the back pocket which fed the mask, 3M has a system of this type, if I recall Les Thorne uses a system like it, as could John Berkeley (Screwples) maybe to contact one of them.
Cheers David