GODESON A38
GODESON Air Chuck Instruction Manual
Model: A38
Introduction
The GODESON Air Chuck is a durable and reliable accessory designed for inflating tires on various vehicles, including bicycles, motorcycles, cars, buses, and trucks. Made from heavy-duty brass, this twist-on chuck ensures a secure connection to tire valve stems, providing efficient and leak-free inflation. This manual provides essential information for the proper setup, operation, and maintenance of your air chuck.

Image: Two GODESON brass air chucks, designed for secure and efficient tire inflation.
Product Features
- Heavy Duty Brass Construction: Ensures durability and reliability for long-term use.
- Twist-on Chuck Design: Provides a tight and secure hold on tire valve stems, preventing air leakage during inflation.
- Universal Compatibility: Features a 1/4-Inch Female NPT thread and 3/4-Inch Hex, fitting standard 1/4" NPT fittings.
- Versatile Application: Suitable for use with tire inflators and pressure gauges on bicycles, motorcycles, cars, buses, and trucks.
- Knurling Design: Allows for easy 360-degree rotation and improved grip when attaching or detaching.
- High Pressure Rating: Capable of handling pressures up to 300 PSI.

Image: Detailed view of the GODESON air chuck, showcasing its knurling design for better grip and universal 1/4" NPT thread.

Image: Exact size description of the air chuck, showing its length of 45mm (1.78 inches) and diameter of 10mm (0.39 inches) at the tip and 16mm (0.63 inches) at the base.

Image: Illustration indicating the maximum pressure capacity of the air chuck, which is 300 PSI.
Setup
- Inspect the Air Chuck: Before first use, visually inspect both air chucks for any signs of damage or manufacturing defects. Ensure the threads are clean and free of debris.
- Prepare Your Inflator/Gauge: Ensure your tire inflator or pressure gauge has a standard 1/4" NPT male fitting.
- Attach the Air Chuck: Screw the GODESON Air Chuck onto the 1/4" NPT male fitting of your inflator or gauge. Tighten securely by hand. For a better seal, especially if you experience any air leakage, you may use PTFE (Teflon) tape on the threads of your inflator's fitting before attaching the chuck.

Image: A comparison showing the full threaded design of the GODESON air chuck for a better seal with an O-ring, versus a standard chuck that may require tape.
Operating Instructions
- Prepare the Tire Valve: Remove the dust cap from the tire valve stem.
- Attach to Valve Stem: Align the threaded end of the GODESON Air Chuck with the tire valve stem. Twist the chuck clockwise onto the valve stem until it is securely tightened. The twist-on design ensures a firm grip and prevents air loss during inflation.
- Inflate Tire: Once the chuck is securely attached, proceed with inflating the tire using your connected air compressor or checking pressure with your gauge.
- Remove Air Chuck: After inflation or pressure check, twist the air chuck counter-clockwise to remove it from the valve stem. A small amount of air may escape during removal; this is normal. Replace the dust cap on the tire valve stem.

Image: A hand demonstrating how to screw the GODESON air chuck onto a tire valve stem for inflation.
Video: A demonstration of how to attach the GODESON Air Chuck to a tire valve and inflate the tire, then remove the chuck.
Other Applications
The GODESON Air Chuck can also be used to inflate other items such as sports balls and balloons when equipped with appropriate nozzles (not included).

Image: The GODESON air chuck shown with various inflation nozzles, illustrating its versatility for inflating items beyond just tires, such as balls and balloons.
Maintenance
- Cleaning: Wipe the air chuck with a clean, dry cloth after each use to remove dirt and debris. Avoid using harsh chemicals or abrasive cleaners.
- Storage: Store the air chuck in a dry place, away from extreme temperatures and corrosive materials, to prevent oxidation and damage to the brass.
- Thread Inspection: Periodically check the threads for wear or damage. If threads appear worn, the chuck may not provide a secure seal and should be replaced.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Air leakage during inflation | Chuck not tightened sufficiently; worn valve stem threads; damaged chuck threads. | Ensure chuck is tightly screwed onto the valve stem. Inspect valve stem and chuck threads for damage. Apply PTFE tape to inflator threads if leakage is from the connection to the inflator. Replace chuck if damaged. |
| Difficulty screwing onto valve stem | Misalignment; dirty or damaged valve stem threads; chuck threads are dirty or damaged. | Ensure proper alignment before twisting. Clean valve stem threads. Inspect chuck threads for debris or damage. |
| Chuck feels loose after tightening | Worn internal components of the chuck or valve stem. | Replace the air chuck or inspect the tire valve stem for wear. |
Specifications
| Attribute | Detail |
|---|---|
| Brand | GODESON |
| Model Number | A38 |
| Material | Heavy Duty Brass |
| Color | Yellow (Brass finish) |
| Connection Type | 1/4-Inch Female NPT, 3/4-Inch Hex |
| Fit Type | Universal Fit |
| Vehicle Service Type | Bicycle, Motorcycle, Car, Bus, Truck |
| Item Diameter | 45 Millimeters (approx. 1.78 inches) |
| Number of Pieces | 2 |
| Item Weight | 1.76 ounces |
| UPC | 738770741068 |
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