flots am
Contributor
- Messages
- 3,226
- Reaction score
- 1,859
- # of dives
- I just don't log dives
We HAVE had a yoke connection come loose on an open water dive, though. The student involved had not gotten the yoke settled properly in the ring, and although it apparently sealed well enough that no one heard it leaking pre-dive, it did come completely loose underwater, and occasioned an air-share. If you think about the mechanics of the systems, the only thing holding the yoke reg in place is a little pressure from the screw and the sealing of the o-ring.
A yoke connection goes on finger-tight, however once pressurized it becomes extremely difficult to turn the screw. I don't think I've ever seen (heard) a student who has been able to unscrew the yoke from a fully pressurized system with the valve on, although someone tries every few weeks.
It's actually a pretty solid connection, although I wouldn't use it anywhere the knob could be confused for a valve knob, banged on an overhead or anyplace there might be lines floating around.
flots.