GP6400-12-12-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port

For installations built around JIC-to-O-ring connections, GP6400-12-12-04FP provides nominal sizes 12 and 12 plus a separate -04 female pipe port. This model uses matching nominal size 12 connections on the primary path; nearby part numbers step that size up or down.

Think of the part as three checks: first nominal size 12, second nominal size 12, and finally the 1/4-18 female pipe gauge connection.

GP6400 is selected when the primary fitting must transition between JIC and O-ring styles while still providing gauge access. If the same 12/12 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-12-12-04FB.

Before ordering, compare the family, both nominal sizes, and the third-port thread with the fitting already on the equipment.