I use my shop vac to get most of the moisture out of my BCD . I attach the hose to the exhaust outlet on the shop vac, remove the lower dump valve and the inflator hose from the BCD , and hold the shop vac hose to the inflator hose hole in the BCD . Once the shop vac is running, the BCD inflates, and air and moisture come out the lower dump valve hole.
I occasionally insert a rag in the lower hole to soak up any moisture that collects there. Once I can't feel any moisture collecting in the bottom of the BCD , I hang up the BCD with the lower dump valve cover still removed, and let the BCD air dry for a few days.
