Oxygen tank inflation method:
1. High pressure gas cylinder inflation.
2. Use the Scuba Adapter (available in dive shops) to introduce large bottles of gas into the vial.
3. Electric air pump is inflated.

Precautions:
1. Suitable for leisure diving sources within 10 meters. Do not attempt to use it as a source of gas in deep water.
2. The maximum storage pressure is 3000 PSI and cannot be used for gases with more than 40% oxygen.
3. Please use clean, dry compressed air.
4. When the pointer of the pressure gauge reaches the red area, stand up to the surface of the water and use it again after inflation.
5. Don't forget to release the pressure before opening the lid.