We hear it all the time: “I haven’t serviced my reg in three years, but it breathes fine.”
The problem is, scuba regulators rarely fail all at once. They fail slowly, incrementally, and often silently. A common culprit is Intermediate Pressure (IP) Creep.
What is happening inside your first stage? Every time you take a breath, a high-pressure seat opens to let air in, and closes to stop the flow. Over time, that seat gets an indentation—like a groove in a record. Eventually, it stops sealing perfectly. This allows pressure to slowly build up in the hoses between breaths.
You might not feel it at 30 feet. But at 90 feet, that extra pressure can force your second stage to free-flow violently, or worse, lock up when you need it most.
The Bench Check Myth Most quick “bench checks” only look at the regulator in a static state. At Scuba Gear Service, we don’t guess. We use an automated breathing simulator (the A.I.R. Flow Test Stand) to simulate 450 breaths at various depths. We catch IP creep before it ruins your dive trip.
Don’t wait for a free-flow. If it’s been more than a year (or 100 dives), get it tuned by a specialist.
