Your scuba regulator is the one piece of gear standing between you and a breath of air at depth—so why do so many divers know nothing about what happens during a service? In this episode, Marcus Okafor draws on years of hands-on experience tearing down and rebuilding regulators to walk you through the complete maintenance process, from basic rinse-and-inspect routines anyone can handle to the full professional rebuild that requires factory training and specialized tools. Whether you're curious about becoming a certified service tech, want to understand what you're actually paying for at the dive shop, or just need to know the warning signs that your reg is overdue for attention, this guide breaks down the knowledge that could save your dive—or your life.

• Most manufacturers recommend annual service or every 100 dives, but real-world  ...