I assume you are referring to the corrugated hose that runs from the shoulder dump valve to the LP power inflator. I would never glue one rather than replace, but it might just work. That hose is rarely subject to much pressure - consider it an extension of your BCD bladder. If you over inflate the BCD then you will put some pressure on it, and see if the patch gives before or after the BCD over pressure relief valve opens. But I would also think that whatever tore, ripped, or separated the first time is likely to happen again at the same spot. I don't know you might find a new part, but if you do one just has to be moderately hand to replace it. As long as the replacement hose is the same inside diameter and the same length, it should fit easily. If a different length, then the interior dump valve cable won't work right. Not as cheap as replacing just the hose, another option is to replace the full assembly if that is the only way you can source a part. I believe the XS Scuba inflators use the same shoulder fitting threads, and maybe Sherwood also. Good be others too.
Good luck!