first stage regulator

What is first stage regulator?

first stage regulator meaning attached to the scuba tank, the first stage regulator reduces the high tank pressure to an intermediate pressure of 100 to 150 psi above the surrounding water pressure

Image of scuba tanks with regulator
The first stage regulator is attached to the scuba tank. (Photo: NOAA/National Undersea Research Program)

 

reference: Coral Reef Information System – Glossary

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