When most people think of lifejackets, they picture the bright, foam-filled vests that automatically float you in the water. But many modern lifejackets—especially inflatable ones—come with a small but vital feature that often goes unnoticed: the oral inflation tube.
So, what is it, why is it there, and when would you actually use it? Let’s break it down.
What Is an Oral Inflation Tube on a Lifejacket?
An oral inflation tube is a small, flexible tube attached to the inflation bladder of your lifejacket. As the name suggests, it allows you to inflate your lifejacket by blowing air into it manually—with your mouth.
Most inflatable lifejackets have two main inflation systems:
- Automatic Inflation: Uses a CO₂ cylinder that activates when it hits water or after pulling a cord.
- Oral Inflation: A manual backup that lets you add (or release) air by mouth.
The oral inflation tube is usually tucked into a small sleeve on the lifejacket to keep it secure and accessible when needed.
Why PFD Oral Inflation Tubes Matter
While automatic CO₂ inflation is fast and effective, things don’t always go as planned. Here’s why oral inflation tubes are essential:
1. Backup Inflation Option
If the automatic system fails or the CO₂ cartridge is empty or damaged, you can still inflate your lifejacket using the oral tube. It gives you complete control, especially during maintenance or emergencies.
2. Top-Off After Partial Inflation
Sometimes an automatic or manual CO₂ inflation doesn’t fully pressurize the bladder. The oral tube lets you add air to bring the lifejacket up to optimal buoyancy.
3. Controlled Deflation
Need to deflate the lifejacket for repacking or stowing? The oral tube usually includes a small valve or button that allows you to release air in a controlled way.
4. Great for Training and Testing
In non-emergency situations—like checking your lifejacket for leaks or learning how it works—you can use the oral tube to inflate it without using up a CO₂ cartridge.
How to Use An Oral Inflation Tube
Using the oral inflation tube is simple:
- Locate the tube, usually stored inside a Velcro flap or fabric sleeve.
- Remove the cap (it often doubles as the deflation valve).
- Blow into the tube until the bladder is fully inflated.
- Replace the cap securely.
🛠 Tip: Practice inflating and deflating your lifejacket occasionally so you’re confident using the oral tube when it counts.
When Would You Actually Need It?
- After falling in and discovering the CO₂ didn’t trigger
- When your CO₂ cylinder has already been used, and you’re still in danger
- During calm conditions where you prefer to inflate manually (e.g., paddleboarding or kayaking near shore)
- During inspections to test the bladder without triggering the gas mechanism
PFD Oral Tubes
The oral inflation tube may be a small part of your lifejacket, but it plays a big role in your safety. Think of it as your personal override button—giving you control and confidence when the unexpected happens. Whether you’re a seasoned sailor or just starting out on the water, knowing how it works (and how to use it) is essential knowledge for staying safe. Additionally, its a great place to mount an AIS MOB or Personal Locator Beacon.
So next time you check your lifejacket, don’t overlook that little tube. It just might be the backup that saves your life.