Radium Engineering designed the 3/8in SAE Male to 1/8in NPT Male Fitting as a purpose-built solution that connects 3/8in SAE Male to 1/8in NPT Male Fitting, giving the system a direct transition between the two connection standards. That keeps the plumbing compact and serviceable while avoiding a stack of extra adapters in a fuel, oil, or other compatible fluid system.

The configuration shown here uses 1/8in NPT NPT threading and a 3/8in SAE Male SAE connection, making exact connection and component matching important during installation. Match both connection standards exactly and use the correct sealing method for the thread type being installed.