Originally Posted by trantor12020
How about a simple 12V air pump (3-4psi) for inflating dinghy with a long flexible conrugated plastic conduit (for cables) end with a snorkle with blow-off vent at bottom and viola, a simple hooka. good for 6feet water and is over pressure relief by water pressure.
A pump like the one you describe would be completely inadequate for supplying air to a diver. In addition, the hose you recommend is certainly dangerous to breathe from. And what- you want him to duct tape a snorkle to the end of the hose?