GP6504-12-12-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port

For buyers replacing an existing gauge-port fitting, GP6504-12-12-04FB matches a JIC swivel arrangement with 12 and 12 nominal connections.

The GP6504 family adds a female JIC swivel to the primary connection path, paired with a male JIC connection.

Tompkins identifies the gauge side as 7/16-20 female O-ring; that third-port specification is independent of the nominal sizing on the main flow path.

At nominal size 12 on both primary connections, this version occupies the mid-range of the family rather than either size extreme. The specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.