archer1960
Contributor
Tursiops correctly points out that disconnecting the inflator hose is a required skill for the pool sessions in all RSTC agencies.
He did not mention that oral inflation is also a required skill in all WRSTC agencies. In PADI's new standards, it is a point of emphasis and must be done several times in confined water and twice in the open water dives.
Dump valves are supposed to dump air faster than the inflator adds it. If the diver is using a BCD with a pull dump in the shoulder valve, then all that needs to be done is to pull on the corrugated hose with the left hand while disconnected the hose with the right hand.
I don't recall disconnecting and reconnecting the inflator hose *in the water* during my OW training, though we did it on land multiple times. We did use oral inflation several times; the instructor had us use the power inflator once so we knew how it felt, and then had us inflate orally the rest of the time at the surface. We only inflated orally under water once that I recall.