Inflating a manually inflating life jacket, often preferred for activities where accidental inflation is a concern, requires a specific action from the wearer to deploy its buoyancy. Unlike inherently buoyant or automatic models, manual inflation puts you in direct control.
The Primary Manual Inflation Process
The core method for inflating a manual life jacket relies on a simple, quick action by the user. This method is designed for rapid inflation when needed in the water.
Here are the typical steps:
- Locate the Inflation Pull Cord: On the front or side of the life jacket, you will find a pull cord, usually colored brightly (most commonly red) and clearly labeled.
- Pull the Cord Firmly: Give the cord a sharp, strong tug downwards and away from the body.
This pulling action mechanically triggers a pin to puncture a small CO2 gas cartridge housed within the vest. The pressurized carbon dioxide is instantly released into the inflatable chamber of the life jacket, causing it to inflate rapidly.
As demonstrated in operation scenarios, including the type shown in videos like the referenced example (0:24 in the fitting and operating video), pulling the cord is the standard method for activating the CO2 inflation.
Backup and Supplemental Inflation (Oral Tube)
Manually inflating life jackets are also equipped with an oral inflation tube, which serves two main purposes:
- Backup: If the CO2 cartridge fails or if you need to inflate the vest outside of an emergency (e.g., for testing), you can use the oral tube.
- Adjustment: You can use the oral tube to top off the inflation or slightly deflate the vest if needed after CO2 inflation.
To inflate using the oral tube:
- Locate the oral inflation tube (often near the neck area).
- Remove the protective cap or plug.
- Blow air into the tube using your mouth until the vest is sufficiently firm. Replace the cap when done.
Comparing Inflation Methods
Here's a quick comparison of the two methods:
| Method | Trigger Action | Inflation Source | Speed | Primary Use |
|---|---|---|---|---|
| Manual (CO2) | Pull Cord Firmly | CO2 Cartridge | Very Fast | Emergency Inflation |
| Oral | Blow into Tube | Your Lungs | Slow | Backup, Adjustment |
Choosing a manual inflating life jacket means you must be conscious and physically able to perform the pulling action to initiate inflation when required.
