Introduction
This manual provides essential instructions for the safe and effective use of the Bernzomatic Butane Cylinder, Model 426329. This product is designed for refilling compatible butane-powered devices. Please read all instructions and safety warnings carefully before use. Failure to follow these instructions may result in serious injury or property damage.

This image shows the Bernzomatic Butane Cylinder in its packaged state, with the protective cap securely in place over the fueling tip. The label displays product information and safety warnings.
WARNING: EXTREMELY FLAMMABLE. CONTENTS UNDER PRESSURE. Read and understand all warnings on the cylinder label and in this manual before use. Keep out of reach of children.
Setup
- Unpacking: Carefully remove the butane cylinder from its packaging. Inspect the cylinder for any signs of damage, leaks, or defects. Do not use if damaged.
- Ventilation: Ensure you are in a well-ventilated area, preferably outdoors, away from any ignition sources (e.g., open flames, pilot lights, sparks, direct sunlight, hot surfaces).
- Device Preparation: Refer to the instruction manual of the device you intend to refill for specific preparation steps. Ensure the device is turned off and cooled down.
- Personal Protective Equipment: Consider wearing safety glasses and gloves to protect against accidental spray or contact.
Operating Instructions (Refilling)
Always follow the specific refilling instructions provided with your butane-powered device. The following are general guidelines:

This image illustrates the Bernzomatic Butane Cylinder with its protective cap removed, revealing the universal fueling tip. This tip is designed for refilling compatible butane-powered devices.
- Remove Cap: Carefully remove the protective cap from the Bernzomatic Butane Cylinder to expose the universal fueling tip.
- Locate Fill Valve: Identify the refill valve on your butane-powered device.
- Invert Cylinder: Hold the butane cylinder upside down, with the fueling tip pointing downwards.
- Insert and Press: Insert the fueling tip directly and firmly into the device's refill valve. Press down for 5-10 seconds. You may hear a hissing sound, which is normal as the gas transfers.
- Check Fill Level: Some devices have a visible fuel window. Do not overfill. Stop when the device is full or when liquid butane begins to escape from the refill valve.
- Remove Cylinder: Carefully remove the butane cylinder from the device. A small amount of gas may escape; this is normal.
- Allow to Settle: Wait a few minutes for the butane to stabilize and for any residual gas to dissipate before attempting to ignite the device.
- Replace Cap: Securely replace the protective cap on the butane cylinder for storage.

This image demonstrates the process of refilling a butane-powered device using the Bernzomatic Butane Cylinder. The cylinder's fueling tip is inserted into the device's refill port.
Maintenance
- Cylinder Inspection: Periodically inspect the cylinder for any signs of corrosion, dents, or damage. Do not use a damaged cylinder.
- Tip Cleaning: Ensure the universal fueling tip remains clean and free of debris to ensure a proper seal during refilling.
- Storage: Store the cylinder in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and ignition sources. Keep the protective cap securely in place. Do not store in temperatures exceeding 120°F (49°C).
- Disposal: Dispose of empty cylinders according to local regulations. Do not puncture or incinerate.
Troubleshooting
- Device Not Refilling:
- Ensure the cylinder is inverted during refilling.
- Verify the fueling tip is fully inserted into the device's refill valve.
- Check for compatibility between the cylinder and your device. Some devices may require specific adapters (not included).
- The device may already be full.
- Gas Leakage During Refill:
- A small amount of leakage is normal. If excessive, ensure the connection is firm and straight.
- The device may be full, causing excess gas to escape.
- Inspect the fueling tip and device valve for damage or debris.
- Cylinder Feels Empty Prematurely:
- Butane is a liquid under pressure. The cylinder may still contain liquid even if it feels light.
- Ensure proper refilling technique as described in the Operating Instructions.
Specifications
| Brand Name | Bernzomatic |
| Model Number | 426329 |
| Item Dimensions (LxWxH) | 1.97 x 1.97 x 11.81 inches |
| Item Weight | 7 Pounds |
| Material | Plastic (Cylinder body) |
| Number of Items | 1 |
| Manufacturer | Worthington Cylinders |
Warranty and Support
The Bernzomatic Butane Cylinder is manufactured by Worthington Cylinders. The product comes with a warranty. For specific details regarding warranty coverage, claims, or technical support, please contact Bernzomatic directly through their official website or customer service channels.
For further assistance or to view additional product information, please visit the official Bernzomatic website.



