Removing the internal valve of the gun blaster requires first unscrewing it from the main body, and then removing the screw fastener with the appropriate tool. Next, separate the valve from the spool with a special tool, carefully remove the spool and seal and clean them.
If a part needs to be replaced, you can purchase a suitable replacement as needed and then follow the same steps to install it. During disassembly and assembly, be careful to ensure proper operation to avoid accidental damage or injury.