Paul R
Registered
Addressing the silt issue - would an octopus holder solve your problem? We have had no issues with the muck causing free flows since we started using them. Not inhaling loose river bottom particles is a bonus.
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I would rather not have a secondary valve in an air line. If you hand off a reg to a distressed person, do you know for sure if it is open or not, you run the chance of further task loading that diver. Also in an emergency will the diver remember to look or check that it is open?I use a octo holder that plugs the mouthpiece and helps prevent free-flows. It also holds the octo very securely. I was the receiver of a switched air reg and was lucky that it was open. The owner had forgot about the valve switch being there and realized later that his holder could have shut down the air flow. In an emergency it could be a problem. Also another point of failure.