1、Safe Use: The DIN valve scuba adapter is compatible with standard K valves, J valves, and H valves, allowing you to safely fill the compressed air from the diving tank into the HPA tank using a PCP gun. 2、Easy to Operate: The convenient and reliable design allows us to easily connect each filling adapter to a pneumatic tool accessory, quickly filling the water tank, making it very suitable for outdoor use. 3、Applicable Range: The working pressure of the HPA tank filling adapter can be up to 30MPA, with a maximum of 40MPA. It has strong pressure resistance and safe and reliable operation. 4、Multiple Usages: This DIN valve scuba adapter is suitable for PCP gun, firefighting, snorkeling system, filling tank, and other scenes. The O ring design greatly extends the service life. 5、Aluminum Alloy: The tank filling adapter is made of excellent aluminum alloy, which has high hardness, erosion resistance, oxidation resistance, and is suitable for various environments.