GP6504-16-16-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port

GP6504-16-16-04FP is sized for nominal 16/16 primary connections and uses Tompkins' GP6504 JIC swivel layout with an integrated gauge port. The 16/16 primary size combination separates this model from the smaller gauge-port fittings in the same family.

The pressure-gauge port uses a 1/4-18 female pipe connection. The two main positions remain nominal size 16 and 16, so all three connection details should be verified together.

On GP6504, one side is a male JIC connection and the other is a female JIC swivel; Tompkins specifies steel construction. If the same 16/16 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-16-16-04FB.

Match the 16/16 primary sizing first, then confirm the gauge-port thread shown in the specifications.