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

For a 04-to-04 nominal-size connection that also needs a gauge takeoff, GP6504-04-04-04FB is the corresponding Tompkins GP6504 configuration.

The two main connection sizes do not tell the whole story. This model's gauge port is 7/16-20 female O-ring, which defines the third connection. With nominal size 04 on the main connection pair, this version covers the smaller end of the family sizing.

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

The specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.