GP2403-20-20-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port

The quickest way to distinguish GP2403-20-20-04FP from neighboring GP2403 part numbers is the combination of 20/20 nominal sizes and the -04 female pipe port. With both primary connections at nominal size 20, this version is intended for the larger connection sizes offered in the series.

Think of the part as three checks: first nominal size 20, second nominal size 20, and finally the 1/4-18 female pipe gauge connection.

This GP2403 layout is the fixed JIC-to-JIC option in the Tompkins gauge-port range. If the same 20/20 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-20-20-04FB.

For replacement selection, the safest match is the complete connection set—not just the series or overall appearance of the fitting.