runsongas
Contributor
I seem to remember reading about Apeks using non-standard threads on their OPV and inflator fittings, so that you can't just replace them with the readily available generic versions(or the great OPV from DSS). Something to keep in mind.
they use the seaquest/aqualung fittings, so finding one isn't terribly hard as aqualung dealers are pretty common around the world. or just carry a spare one.
Seaquest Universal Quick Dump/OPV