We are all taught to rinse our BCDs after every dive. And while that helps, fresh water can’t dissolve everything.
If you dive in saltwater, microscopic salt crystals eventually find their way inside your power inflator mechanism. As the water evaporates, these crystals harden into something resembling concrete.
The “Sticky Button” Scenario One day, you press the inflator button to add a little buoyancy. But because of that salt buildup, the button doesn’t pop back out immediately. It sticks. Now, you are ascending uncontrollably because your BCD is auto-inflating.
This is a mechanical failure that is 100% preventable.
What Real Service Looks Like At Scuba Gear Service, we don’t just dunk your BCD. We disassemble the inflator, ultrasonically clean the valve components to remove calcification, and lubricate the O-rings with oxygen-compatible grease.
Your BCD is a life-support device, not just a backpack. Treat it that way.
Frequently Asked Questions about BCD Inflators
Why does my BCD inflate by itself? This is usually caused by a “sticky” power inflator button. Salt crystals or debris get trapped in the valve mechanism, preventing it from closing completely, which allows air to continuously leak into the bladder.
Can I use WD-40 on my BCD inflator? No! Never use standard petroleum-based lubricants like WD-40 on scuba gear. They can degrade rubber O-rings and plastic components. Always use silicone grease or oxygen-compatible lubricants.
Does rinsing my BCD remove all the salt? Not always. Fresh water rinses help, but water cannot easily penetrate the internal valve seal of the inflator mechanism. Over time, small amounts of saltwater trapped inside evaporate and leave behind hard crystals that require ultrasonic cleaning to remove.