| 摘要 |
PROBLEM TO BE SOLVED: To provide a first stage regulator convenient for carrying or housing. SOLUTION: In one side of the periphery of a first stage regulator main body A, a residual pressure gauge high voltage hose connection port 1, an octopus regulator connection port 2 and a BC jacket connection port 3 are disposed, a rotary portion C is connected to be rotatable with respect to the first stage regulator main body, and a main regulator connection port 4 and a dry suit connection port 5 are disposed in this rotary portion.
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