You cannot breathe directly out of a scuba tank because of the high pressure. A regulator reduces pressure to safe a level that can be inhaled by the diver. A diving regulator has two parts: the First Stage reduces the tank pressure and connects it to the Second Stage which contains the mouthpiece for breathing

Oceanic SP-5 1st Stage Yoke

Manufacturer Reference / Part No.: 407530


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Feature1Simple, Dependable and Economical
Feature2Non-Balanced Flow-By Piston Fail-Safe Design
Feature3Outperform other High-End Regulators
Feature4Exceeds both Navy Class A and European CE Standards
Feature5Marine Grade Chromed Brass Construction

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