GP6400-20-20-04FP Tompkins JIC-to-O-Ring Gauge Port with -04 Female Pipe Port

Rather than selecting by family name alone, GP6400-20-20-04FP should be matched by its exact connection set: JIC-to-O-ring, 20/20 nominal sizes, and a -04 female pipe port. At the gauge connection, Tompkins calls out 1/4-18 female pipe. That is the detail most likely to separate this part from another GP6400 model with the same 20/20 primary sizing.

GP6400 is selected when the primary fitting must transition between JIC and O-ring styles while still providing gauge access. The matching 20/20 nominal sizing puts this model toward the larger half of the family.

If the same 20/20 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-20-20-04FB. For replacement selection, the safest match is the complete connection set—not just the series or overall appearance of the fitting.

Product Type Gauge Port
Series / Family GP6400
Gauge Port Family GP6400
Gauge Port Type Gauge Port - JIC to O-Ring with -04 FP
Thread 1 Nominal Size 20
Thread 2 Nominal Size 20

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Total price$814.41

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