The biggest complaint I have of many early single hose regulators is the tiny little exhaust valves. In fact, some Healthways had stacked exhaust valves. Inhalation was not so bad but forcing the air back through those tiny, hard rubber exhaust valves and restrictive tees was tiring. I am often amused at divers who having never experienced this wonder at the purpose of the masks during that era many of which had larger valves than the regulators. Of course, I see the light, I breath in through the regulator and exhaust out through my nose. Maybe that was the plan! Or just use my Mistral.
Any of those old regulators with the tiny exhaust valves should not be used for diving. In fact, I remember a letter from USD stating so, back about 73. I was working in a retail dive store at that time.
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Any of those old regulators with the tiny exhaust valves should not be used for diving. In fact, I remember a letter from USD stating so, back about 73. I was working in a retail dive store at that time.
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