Kevrumbo
Banned
- Messages
- 5,659
- Reaction score
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- # of dives
- 1000 - 2499
Especially on DPV/Scooter, switching out regs on the fly -there's always a chance of a freeflow. Also contaminated water -i.e. Engine room bunker oil; Cargo Hold aviation fuel --in the Truk Lagoon wrecks . . .it would be nasty to get a mouthful of that on clearing a switched reg.
It's a 100% issue of diving applications for those of us Wreck Divers who regularly dive on Indo-Pacific WWII Wrecks sunk-in-action. On UTD Z system sidemount, there is no issue of freeflow on reg swapping between bottom mix tanks or taking in a mouthful of contaminated water inside a wreck --->because we don't swap out regs (the Long Hose Primary is breathed all the time in the wreck unless donating to Out-of-Gas Buddy). And on Scooter in open water crossing shipping lanes, you don't have time to be off trigger for 5 to 10 seconds to futz with anything especially with super tankers/container ships bearing down on you. . .Well you can get off the trigger for the 5 to 10 seconds it takes to make the gas switch or opt to delay it to your next stop. Most of the time when scootering in caves I'll be breathing a stage anyway and gas switches aren't going to happen nearly as often.
We heard that argument from you already. It's not an issue for 99.9% of diving applications. And I'd be worried about my skin, suit and the rest of the gear when swimming around in something as aggressive as aviation fuel.