{"title":"Gauge Ports","description":"\u003cp\u003eGauge ports provide a convenient connection point for installing pressure gauges or accessing a hydraulic system for pressure monitoring and testing. This collection includes multiple gauge-port configurations designed to integrate a pressure connection into common hydraulic fitting arrangements.\u003c\/p\u003e\n\n\u003cp\u003eAvailable styles include JIC-to-JIC, JIC-to-O-ring, and JIC swivel gauge ports in a range of nominal thread sizes. Depending on the series, the gauge connection is available with either a -04 SAE O-ring port or a -04 female pipe port.\u003c\/p\u003e\n\n\u003cp\u003eWhen selecting a gauge port, confirm the fitting configuration first, then verify the nominal thread sizes on both ends and the type of gauge connection required. Fixed JIC configurations and swivel designs serve different installation needs, while JIC-to-O-ring versions provide an option for systems using SAE O-ring connections.\u003c\/p\u003e\n\n\u003cp\u003eGauge ports are part of the pressure-monitoring connection between the hydraulic system and the measuring equipment. If you also need the instrument itself, browse our complete \u003ca href=\"\/collections\/pressure-gauges\"\u003epressure gauges\u003c\/a\u003e collection.\u003c\/p\u003e\n\n\u003cp\u003eUse the products below to compare gauge ports by fitting family, port type, nominal thread size, and connection configuration.\u003c\/p\u003e","products":[{"product_id":"gp2403-04-04-04fb-tompkins","title":"GP2403-04-04-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP2403-04-04-04FB is the 04\/04 nominal-size member of Tompkins' GP2403 family, combining a JIC-to-JIC fitting layout with a dedicated -04 SAE O-ring port for pressure-gauge access.\u003c\/p\u003e\u003cp\u003eThe GP2403 family keeps the main path JIC-to-JIC, using male JIC connections at both primary positions. The FB designation matters here: this model's gauge takeoff is 7\/16-20 female O-ring, not the female pipe style offered elsewhere in the same family.\u003c\/p\u003e\u003cp\u003eThe 04 nominal size places this model among the smaller connection options in the family.\u003c\/p\u003e\u003cp\u003eThe specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080730657021,"sku":"GP2403-04-04-04FB (Tompkins)","price":10.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-04-04-04fb-guage-port-3239559.jpg?v=1770872706"},{"product_id":"gp2403-04-04-04fp-tompkins","title":"GP2403-04-04-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eFor installations built around JIC-to-JIC connections, GP2403-04-04-04FP provides nominal sizes 04 and 04 plus a separate -04 female pipe port. The 04 nominal size places this model among the smaller connection options in the family.\u003c\/p\u003e\u003cp\u003eThink of the part as three checks: first nominal size 04, second nominal size 04, and finally the 1\/4-18 female pipe gauge connection.\u003c\/p\u003e\u003cp\u003eThis GP2403 layout is the fixed JIC-to-JIC option in the Tompkins gauge-port range. If the same 04\/04 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-04-04-04FB.\u003c\/p\u003e\u003cp\u003eBefore ordering, compare the family, both nominal sizes, and the third-port thread with the fitting already on the equipment.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080730788093,"sku":"GP2403-04-04-04FP (Tompkins)","price":10.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-04-04-04fp-guage-port-1639347.jpg?v=1770872706"},{"product_id":"gp2403-06-06-04fb-tompkins","title":"GP2403-06-06-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eTompkins GP2403-06-06-04FB brings gauge access into a JIC-to-JIC connection without changing the two primary nominal sizes: 06 and 06.\u003c\/p\u003e\u003cp\u003eTompkins specifies the third connection as 7\/16-20 female O-ring. Matching that gauge-port thread prevents confusing this FB version with the otherwise similar female pipe configuration. The 06 nominal size places this model among the smaller connection options in the family.\u003c\/p\u003e\u003cp\u003eWith GP2403, both main connections are male JIC; the separate third port is reserved for the gauge connection.\u003c\/p\u003e\u003cp\u003eBecause several GP2403 models share the same basic shape, use the part number and connection data below as the final fit check.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080730886397,"sku":"GP2403-06-06-04FB (Tompkins)","price":12.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-06-06-04fb-guage-port-8952495.jpg?v=1770872707"},{"product_id":"gp2403-06-06-04fp-tompkins","title":"GP2403-06-06-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe defining feature of GP2403-06-06-04FP is its three-connection arrangement: nominal size 06, nominal size 06, and a -04 female pipe port. The underlying GP2403 fitting remains JIC-to-JIC, so the gauge takeoff is added without changing the primary connection type.\u003c\/p\u003e\u003cp\u003eWith nominal size 06 on the main connection pair, this version covers the smaller end of the family sizing. Because Tompkins offers parallel FP and alternate-port versions, the third connection deserves its own fit check. On GP2403-06-06-04FP, it is 1\/4-18 female pipe.\u003c\/p\u003e\u003cp\u003eIf the same 06\/06 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-06-06-04FB. Match the 06\/06 primary sizing first, then confirm the gauge-port thread shown in the specifications.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080730951933,"sku":"GP2403-06-06-04FP (Tompkins)","price":12.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-06-06-04fp-guage-port-4091301.jpg?v=1770872706"},{"product_id":"gp2403-08-08-04fb-tompkins","title":"GP2403-08-08-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eChoose GP2403-08-08-04FB when the fitting layout calls for Tompkins' GP2403 JIC-to-JIC geometry with matching 08\/08 nominal sizes and a -04 SAE O-ring port.\u003c\/p\u003e\u003cp\u003eThe GP2403 family keeps the main path JIC-to-JIC, using male JIC connections at both primary positions.\u003c\/p\u003e\u003cp\u003eTompkins identifies the gauge side as 7\/16-20 female O-ring; that third-port specification is independent of the nominal sizing on the main flow path.\u003c\/p\u003e\u003cp\u003eAt nominal size 08 on both primary connections, this version occupies the mid-range of the family rather than either size extreme. Review the nominal sizes and gauge-port thread together before treating another GP2403 part number as interchangeable.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080731050237,"sku":"GP2403-08-08-04FB (Tompkins)","price":14.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-08-08-04fb-guage-port-9023371.jpg?v=1770872706"},{"product_id":"gp2403-08-08-04fp-tompkins","title":"GP2403-08-08-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eRather than selecting by family name alone, GP2403-08-08-04FP should be matched by its exact connection set: JIC-to-JIC, 08\/08 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 GP2403 model with the same 08\/08 primary sizing.\u003c\/p\u003e\u003cp\u003eThis GP2403 layout is the fixed JIC-to-JIC option in the Tompkins gauge-port range. At nominal size 08 on both primary connections, this version occupies the mid-range of the family rather than either size extreme.\u003c\/p\u003e\u003cp\u003eIf the same 08\/08 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-08-08-04FB. For replacement selection, the safest match is the complete connection set—not just the series or overall appearance of the fitting.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080731214077,"sku":"GP2403-08-08-04FP (Tompkins)","price":14.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-08-08-04fp-guage-port-2234268.jpg?v=1770872706"},{"product_id":"gp2403-10-10-04fb-tompkins","title":"GP2403-10-10-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP2403-10-10-04FB is a Tompkins fixed JIC-to-JIC gauge port configured with nominal size 10 at the first primary connection and 10 at the second.\u003c\/p\u003e\u003cp\u003eWith GP2403, both main connections are male JIC; the separate third port is reserved for the gauge connection. The gauge takeoff is not interchangeable across every GP2403 part. GP2403-10-10-04FB uses 7\/16-20 female O-ring, while related models can use the female pipe port style.\u003c\/p\u003e\u003cp\u003eThis model uses matching nominal size 10 connections on the primary path; nearby part numbers step that size up or down.\u003c\/p\u003e\u003cp\u003eUse the structured specifications to verify that the primary sizes and gauge-port style match the existing connection.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080731279613,"sku":"GP2403-10-10-04FB (Tompkins)","price":20.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-10-10-04fb-guage-port-3732420.jpg?v=1770872706"},{"product_id":"gp2403-10-10-04fp-tompkins","title":"GP2403-10-10-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eIn the GP2403 series, GP2403-10-10-04FP identifies the 10\/10 size combination with a -04 female pipe port; that final port style is as important as the two main fitting sizes. This model uses matching nominal size 10 connections on the primary path; nearby part numbers step that size up or down.\u003c\/p\u003e\u003cp\u003eThe pressure-gauge port uses a 1\/4-18 female pipe connection. The two main positions remain nominal size 10 and 10, so all three connection details should be verified together.\u003c\/p\u003e\u003cp\u003eThe underlying GP2403 fitting remains JIC-to-JIC, so the gauge takeoff is added without changing the primary connection type. If the same 10\/10 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-10-10-04FB.\u003c\/p\u003e\u003cp\u003eConfirm all three connection points against the installation rather than substituting solely on the basis of the GP2403 family name.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080731345149,"sku":"GP2403-10-10-04FP (Tompkins)","price":20.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-10-10-04fp-guage-port-5927909.jpg?v=1770872648"},{"product_id":"gp2403-12-12-04fb-tompkins","title":"GP2403-12-12-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eFor a 12-to-12 nominal-size connection that also needs a gauge takeoff, GP2403-12-12-04FB is the corresponding Tompkins GP2403 configuration.\u003c\/p\u003e\u003cp\u003eThe 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. This model uses matching nominal size 12 connections on the primary path; nearby part numbers step that size up or down.\u003c\/p\u003e\u003cp\u003eThe GP2403 family keeps the main path JIC-to-JIC, using male JIC connections at both primary positions.\u003c\/p\u003e\u003cp\u003eThe specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080731443453,"sku":"GP2403-12-12-04FB (Tompkins)","price":29.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-12-12-04fb-guage-port-9513087.jpg?v=1770872649"},{"product_id":"gp2403-12-12-04fp-tompkins","title":"GP2403-12-12-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe GP2403-12-12-04FP gauge port is built around male JIC connections on both primary positions, with nominal sizes 12 and 12 and a separate gauge connection. This GP2403 layout is the fixed JIC-to-JIC option in the Tompkins gauge-port range.\u003c\/p\u003e\u003cp\u003eThe 12\/12 pairing sits in the middle of the available nominal-size range, making the part number itself important when comparing adjacent sizes. The gauge takeoff is threaded 1\/4-18 female pipe. That thread should be checked separately from the two primary fitting sizes, because the SAE O-ring version of the family uses a different third-port connection.\u003c\/p\u003e\u003cp\u003eIf the same 12\/12 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-12-12-04FB. Before ordering, compare the family, both nominal sizes, and the third-port thread with the fitting already on the equipment.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080731836669,"sku":"GP2403-12-12-04FP (Tompkins)","price":29.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-12-12-04fp-guage-port-5319731.jpg?v=1770872648"},{"product_id":"gp2403-16-16-04fb-tompkins","title":"GP2403-16-16-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eIf the existing plumbing uses Tompkins' GP2403 JIC-to-JIC pattern, GP2403-16-16-04FB is the version sized 16\/16 with a -04 SAE O-ring port.\u003c\/p\u003e\u003cp\u003eWith GP2403, both main connections are male JIC; the separate third port is reserved for the gauge connection.\u003c\/p\u003e\u003cp\u003ePrimary fit is determined by the 16 and 16 nominal sizes, while the gauge side is determined by the 7\/16-20 female O-ring third-port thread.\u003c\/p\u003e\u003cp\u003eThe matching 16\/16 nominal sizing puts this model toward the larger half of the family. Because several GP2403 models share the same basic shape, use the part number and connection data below as the final fit check.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080731934973,"sku":"GP2403-16-16-04FB (Tompkins)","price":45.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-16-16-04fb-guage-port-6730629.jpg?v=1770872648"},{"product_id":"gp2403-16-16-04fp-tompkins","title":"GP2403-16-16-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eGP2403-16-16-04FP belongs to the GP2403 gauge-port line and is distinguished by a 16\/16 primary size pairing together with its -04 female pipe port. The gauge connection is 1\/4-18 female pipe. If the mating gauge or test hardware uses the other port style, the corresponding alternate model should be selected instead.\u003c\/p\u003e\u003cp\u003eThe underlying GP2403 fitting remains JIC-to-JIC, so the gauge takeoff is added without changing the primary connection type. The matching 16\/16 nominal sizing puts this model toward the larger half of the family.\u003c\/p\u003e\u003cp\u003eIf the same 16\/16 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-16-16-04FB. Match the 16\/16 primary sizing first, then confirm the gauge-port thread shown in the specifications.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732033277,"sku":"GP2403-16-16-04FP (Tompkins)","price":45.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-16-16-04fp-guage-port-9293342.jpg?v=1770872648"},{"product_id":"gp2403-20-20-04fb-tompkins","title":"GP2403-20-20-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eOn GP2403-20-20-04FB, Tompkins combines the JIC-to-JIC fitting path with a third connection specifically for the pressure gauge.\u003c\/p\u003e\u003cp\u003eThe GP2403 family keeps the main path JIC-to-JIC, using male JIC connections at both primary positions. The FB designation matters here: this model's gauge takeoff is 7\/16-20 female O-ring, not the female pipe style offered elsewhere in the same family.\u003c\/p\u003e\u003cp\u003eWith both primary connections at nominal size 20, this version is intended for the larger connection sizes offered in the series.\u003c\/p\u003e\u003cp\u003eReview the nominal sizes and gauge-port thread together before treating another GP2403 part number as interchangeable.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732098813,"sku":"GP2403-20-20-04FB (Tompkins)","price":71.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-20-20-04fb-guage-port-3438365.jpg?v=1770872648"},{"product_id":"gp2403-20-20-04fp-tompkins","title":"GP2403-20-20-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eThink of the part as three checks: first nominal size 20, second nominal size 20, and finally the 1\/4-18 female pipe gauge connection.\u003c\/p\u003e\u003cp\u003eThis 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.\u003c\/p\u003e\u003cp\u003eFor replacement selection, the safest match is the complete connection set—not just the series or overall appearance of the fitting.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732197117,"sku":"GP2403-20-20-04FP (Tompkins)","price":71.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-20-20-04fp-guage-port-3456059.jpg?v=1770872648"},{"product_id":"gp2403-24-24-04fb-tompkins","title":"GP2403-24-24-04FB Tompkins JIC-to-JIC Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP2403-24-24-04FB is not just another GP2403 gauge port; it is the exact 24\/24 nominal-size version using the FB gauge-port configuration.\u003c\/p\u003e\u003cp\u003eTompkins specifies the third connection as 7\/16-20 female O-ring. Matching that gauge-port thread prevents confusing this FB version with the otherwise similar female pipe configuration. Both primary connections are nominal size 24, making this one of the largest configurations in the series.\u003c\/p\u003e\u003cp\u003eWith GP2403, both main connections are male JIC; the separate third port is reserved for the gauge connection.\u003c\/p\u003e\u003cp\u003eUse the structured specifications to verify that the primary sizes and gauge-port style match the existing connection.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732328189,"sku":"GP2403-24-24-04FB (Tompkins)","price":100.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-24-24-04fb-guage-port-8751410.jpg?v=1770872648"},{"product_id":"gp2403-24-24-04fp-tompkins","title":"GP2403-24-24-04FP Tompkins JIC-to-JIC Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eTompkins part GP2403-24-24-04FP pairs a JIC-to-JIC body with nominal sizes 24 and 24, then adds a -04 female pipe port as the gauge connection. The underlying GP2403 fitting remains JIC-to-JIC, so the gauge takeoff is added without changing the primary connection type.\u003c\/p\u003e\u003cp\u003eThis version uses matching nominal size 24 connections at the upper end of the family's size range. Because Tompkins offers parallel FP and alternate-port versions, the third connection deserves its own fit check. On GP2403-24-24-04FP, it is 1\/4-18 female pipe.\u003c\/p\u003e\u003cp\u003eIf the same 24\/24 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP2403-24-24-04FB. Confirm all three connection points against the installation rather than substituting solely on the basis of the GP2403 family name.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732524797,"sku":"GP2403-24-24-04FP (Tompkins)","price":100.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp2403-24-24-04fp-guage-port-9063363.jpg?v=1770872648"},{"product_id":"gp6400-04-04-04fb-tompkins","title":"GP6400-04-04-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eFor buyers replacing an existing gauge-port fitting, GP6400-04-04-04FB matches a JIC-to-O-ring arrangement with 04 and 04 nominal connections.\u003c\/p\u003e\u003cp\u003eThe GP6400 family is the JIC-to-O-ring branch of the range, pairing a JIC connection with an O-ring connection on the main fitting path.\u003c\/p\u003e\u003cp\u003eTompkins identifies the gauge side as 7\/16-20 female O-ring; that third-port specification is independent of the nominal sizing on the main flow path.\u003c\/p\u003e\u003cp\u003eThis 04\/04 configuration is one of the more compact nominal-size choices in the family. The specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732590333,"sku":"GP6400-04-04-04FB (Tompkins)","price":12.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-04-04-04fb-guage-port-8215392.jpg?v=1770872648"},{"product_id":"gp6400-04-04-04fp-tompkins","title":"GP6400-04-04-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eWithin Tompkins' pressure-test fitting range, GP6400-04-04-04FP provides a JIC-to-O-ring path and a dedicated -04 female pipe port in one gauge-port configuration. 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 04\/04 primary sizing.\u003c\/p\u003e\u003cp\u003eGP6400 is selected when the primary fitting must transition between JIC and O-ring styles while still providing gauge access. This 04\/04 configuration is one of the more compact nominal-size choices in the family.\u003c\/p\u003e\u003cp\u003eIf the same 04\/04 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-04-04-04FB. Before ordering, compare the family, both nominal sizes, and the third-port thread with the fitting already on the equipment.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732721405,"sku":"GP6400-04-04-04FP (Tompkins)","price":12.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-04-04-04fp-guage-port-3427830.jpg?v=1770872648"},{"product_id":"gp6400-06-06-04fb-tompkins","title":"GP6400-06-06-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eThe GP6400-06-06-04FB part number identifies a specific GP6400 connection package: JIC-to-O-ring, nominal size 06, nominal size 06, and the FB gauge-port style.\u003c\/p\u003e\u003cp\u003eThe main GP6400 connection pattern is JIC-to-O-ring; the pressure-gauge port is the separate third connection. The gauge takeoff is not interchangeable across every GP6400 part. GP6400-06-06-04FB uses 7\/16-20 female O-ring, while related models can use the female pipe port style.\u003c\/p\u003e\u003cp\u003eThe 06 nominal size places this model among the smaller connection options in the family.\u003c\/p\u003e\u003cp\u003eBecause several GP6400 models share the same basic shape, use the part number and connection data below as the final fit check.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080732983549,"sku":"GP6400-06-06-04FB (Tompkins)","price":14.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-06-06-04fb-guage-port-5029649.jpg?v=1770872647"},{"product_id":"gp6400-06-06-04fp-tompkins","title":"GP6400-06-06-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eGP6400-06-06-04FP is sized for nominal 06\/06 primary connections and uses Tompkins' GP6400 JIC-to-O-ring layout with an integrated gauge port. The 06 nominal size places this model among the smaller connection options in the family.\u003c\/p\u003e\u003cp\u003eThe pressure-gauge port uses a 1\/4-18 female pipe connection. The two main positions remain nominal size 06 and 06, so all three connection details should be verified together.\u003c\/p\u003e\u003cp\u003eUnlike the JIC-to-JIC families, GP6400 combines JIC and O-ring connection styles on its primary path. If the same 06\/06 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-06-06-04FB.\u003c\/p\u003e\u003cp\u003eMatch the 06\/06 primary sizing first, then confirm the gauge-port thread shown in the specifications.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080733114621,"sku":"GP6400-06-06-04FP (Tompkins)","price":14.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-06-06-04fp-guage-port-1525035.jpg?v=1770872648"},{"product_id":"gp6400-08-08-04fb-tompkins","title":"GP6400-08-08-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eUse GP6400-08-08-04FB where the main connection must remain JIC-to-O-ring and the gauge connection needs to be the FB version of the GP6400 family.\u003c\/p\u003e\u003cp\u003eThe 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. The 08\/08 pairing sits in the middle of the available nominal-size range, making the part number itself important when comparing adjacent sizes.\u003c\/p\u003e\u003cp\u003eThe GP6400 family is the JIC-to-O-ring branch of the range, pairing a JIC connection with an O-ring connection on the main fitting path.\u003c\/p\u003e\u003cp\u003eReview the nominal sizes and gauge-port thread together before treating another GP6400 part number as interchangeable.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080734425341,"sku":"GP6400-08-08-04FB (Tompkins)","price":22.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-08-08-04fb-guage-port-8463341.jpg?v=1770872647"},{"product_id":"gp6400-08-08-04fp-tompkins","title":"GP6400-08-08-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eTompkins configures GP6400-08-08-04FP for a JIC-to-O-ring primary connection path, then adds pressure-gauge access through a dedicated third port. GP6400 is selected when the primary fitting must transition between JIC and O-ring styles while still providing gauge access.\u003c\/p\u003e\u003cp\u003eAt nominal size 08 on both primary connections, this version occupies the mid-range of the family rather than either size extreme. The gauge takeoff is threaded 1\/4-18 female pipe. That thread should be checked separately from the two primary fitting sizes, because the SAE O-ring version of the family uses a different third-port connection.\u003c\/p\u003e\u003cp\u003eIf the same 08\/08 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-08-08-04FB. For replacement selection, the safest match is the complete connection set—not just the series or overall appearance of the fitting.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080734556413,"sku":"GP6400-08-08-04FP (Tompkins)","price":22.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-08-08-04fp-guage-port-8019492.jpg?v=1770872648"},{"product_id":"gp6400-10-10-04fb-tompkins","title":"GP6400-10-10-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP6400-10-10-04FB combines two job-critical selection points—10\/10 nominal primary sizes and a -04 SAE O-ring port—within the GP6400 family.\u003c\/p\u003e\u003cp\u003eThe main GP6400 connection pattern is JIC-to-O-ring; the pressure-gauge port is the separate third connection.\u003c\/p\u003e\u003cp\u003ePrimary fit is determined by the 10 and 10 nominal sizes, while the gauge side is determined by the 7\/16-20 female O-ring third-port thread.\u003c\/p\u003e\u003cp\u003eAt nominal size 10 on both primary connections, this version occupies the mid-range of the family rather than either size extreme. Use the structured specifications to verify that the primary sizes and gauge-port style match the existing connection.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080734654717,"sku":"GP6400-10-10-04FB (Tompkins)","price":28.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-10-10-04fb-guage-port-3546704.jpg?v=1770872647"},{"product_id":"gp6400-10-10-04fp-tompkins","title":"GP6400-10-10-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe connection geometry on GP6400-10-10-04FP is the key: a JIC connection paired with an O-ring connection, plus a dedicated gauge port specified separately from the main fitting path. The gauge connection is 1\/4-18 female pipe. If the mating gauge or test hardware uses the other port style, the corresponding alternate model should be selected instead.\u003c\/p\u003e\u003cp\u003eUnlike the JIC-to-JIC families, GP6400 combines JIC and O-ring connection styles on its primary path. At nominal size 10 on both primary connections, this version occupies the mid-range of the family rather than either size extreme.\u003c\/p\u003e\u003cp\u003eIf the same 10\/10 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-10-10-04FB. Confirm all three connection points against the installation rather than substituting solely on the basis of the GP6400 family name.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080734753021,"sku":"GP6400-10-10-04FP (Tompkins)","price":28.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-10-10-04fp-guage-port-2092131.jpg?v=1770872646"},{"product_id":"gp6400-12-12-04fb-tompkins","title":"GP6400-12-12-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP6400-12-12-04FB is the 12\/12 nominal-size member of Tompkins' GP6400 family, combining a JIC-to-O-ring fitting layout with a dedicated -04 SAE O-ring port for pressure-gauge access.\u003c\/p\u003e\u003cp\u003eThe GP6400 family is the JIC-to-O-ring branch of the range, pairing a JIC connection with an O-ring connection on the main fitting path. The FB designation matters here: this model's gauge takeoff is 7\/16-20 female O-ring, not the female pipe style offered elsewhere in the same family.\u003c\/p\u003e\u003cp\u003eThis model uses matching nominal size 12 connections on the primary path; nearby part numbers step that size up or down.\u003c\/p\u003e\u003cp\u003eThe specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080734818557,"sku":"GP6400-12-12-04FB (Tompkins)","price":41.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-12-12-04fb-guage-port-6781954.jpg?v=1770872646"},{"product_id":"gp6400-12-12-04fp-tompkins","title":"GP6400-12-12-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eFor 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.\u003c\/p\u003e\u003cp\u003eThink of the part as three checks: first nominal size 12, second nominal size 12, and finally the 1\/4-18 female pipe gauge connection.\u003c\/p\u003e\u003cp\u003eGP6400 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.\u003c\/p\u003e\u003cp\u003eBefore ordering, compare the family, both nominal sizes, and the third-port thread with the fitting already on the equipment.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080734916861,"sku":"GP6400-12-12-04FP (Tompkins)","price":41.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-12-12-04fp-guage-port-1398895.jpg?v=1770872646"},{"product_id":"gp6400-16-16-04fb-tompkins","title":"GP6400-16-16-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eTompkins GP6400-16-16-04FB brings gauge access into a JIC-to-O-ring connection without changing the two primary nominal sizes: 16 and 16.\u003c\/p\u003e\u003cp\u003eTompkins specifies the third connection as 7\/16-20 female O-ring. Matching that gauge-port thread prevents confusing this FB version with the otherwise similar female pipe configuration. The 16\/16 primary size combination separates this model from the smaller gauge-port fittings in the same family.\u003c\/p\u003e\u003cp\u003eThe main GP6400 connection pattern is JIC-to-O-ring; the pressure-gauge port is the separate third connection.\u003c\/p\u003e\u003cp\u003eBecause several GP6400 models share the same basic shape, use the part number and connection data below as the final fit check.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735015165,"sku":"GP6400-16-16-04FB (Tompkins)","price":78.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-16-16-04fb-guage-port-1965756.jpg?v=1770872646"},{"product_id":"gp6400-16-16-04fp-tompkins","title":"GP6400-16-16-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe defining feature of GP6400-16-16-04FP is its three-connection arrangement: nominal size 16, nominal size 16, and a -04 female pipe port. Unlike the JIC-to-JIC families, GP6400 combines JIC and O-ring connection styles on its primary path.\u003c\/p\u003e\u003cp\u003eThe matching 16\/16 nominal sizing puts this model toward the larger half of the family. Because Tompkins offers parallel FP and alternate-port versions, the third connection deserves its own fit check. On GP6400-16-16-04FP, it is 1\/4-18 female pipe.\u003c\/p\u003e\u003cp\u003eIf the same 16\/16 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-16-16-04FB. Match the 16\/16 primary sizing first, then confirm the gauge-port thread shown in the specifications.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735113469,"sku":"GP6400-16-16-04FP (Tompkins)","price":78.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-16-16-04fp-guage-port-9354656.jpg?v=1770872647"},{"product_id":"gp6400-20-20-04fb-tompkins","title":"GP6400-20-20-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eChoose GP6400-20-20-04FB when the fitting layout calls for Tompkins' GP6400 JIC-to-O-ring geometry with matching 20\/20 nominal sizes and a -04 SAE O-ring port.\u003c\/p\u003e\u003cp\u003eThe GP6400 family is the JIC-to-O-ring branch of the range, pairing a JIC connection with an O-ring connection on the main fitting path.\u003c\/p\u003e\u003cp\u003eTompkins identifies the gauge side as 7\/16-20 female O-ring; that third-port specification is independent of the nominal sizing on the main flow path.\u003c\/p\u003e\u003cp\u003eThe matching 20\/20 nominal sizing puts this model toward the larger half of the family. Review the nominal sizes and gauge-port thread together before treating another GP6400 part number as interchangeable.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735211773,"sku":"GP6400-20-20-04FB (Tompkins)","price":106.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-20-20-04fb-guage-port-7110262.jpg?v=1770872647"},{"product_id":"gp6400-20-20-04fp-tompkins","title":"GP6400-20-20-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eRather 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.\u003c\/p\u003e\u003cp\u003eGP6400 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.\u003c\/p\u003e\u003cp\u003eIf 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.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735277309,"sku":"GP6400-20-20-04FP (Tompkins)","price":106.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-20-20-04fp-guage-port-4370420.jpg?v=1770872647"},{"product_id":"gp6400-24-24-04fb-tompkins","title":"GP6400-24-24-04FB Tompkins JIC-to-O-Ring Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP6400-24-24-04FB is a Tompkins JIC-to-O-ring gauge port configured with nominal size 24 at the first primary connection and 24 at the second.\u003c\/p\u003e\u003cp\u003eThe main GP6400 connection pattern is JIC-to-O-ring; the pressure-gauge port is the separate third connection. The gauge takeoff is not interchangeable across every GP6400 part. GP6400-24-24-04FB uses 7\/16-20 female O-ring, while related models can use the female pipe port style.\u003c\/p\u003e\u003cp\u003eBoth primary connections are nominal size 24, making this one of the largest configurations in the series.\u003c\/p\u003e\u003cp\u003eUse the structured specifications to verify that the primary sizes and gauge-port style match the existing connection.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735375613,"sku":"GP6400-24-24-04FB (Tompkins)","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-24-24-04fb-guage-port-4374827.jpg?v=1770872647"},{"product_id":"gp6400-24-24-04fp-tompkins","title":"GP6400-24-24-04FP Tompkins JIC-to-O-Ring Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eIn the GP6400 series, GP6400-24-24-04FP identifies the 24\/24 size combination with a -04 female pipe port; that final port style is as important as the two main fitting sizes. Both primary connections are nominal size 24, making this one of the largest configurations in the series.\u003c\/p\u003e\u003cp\u003eThe pressure-gauge port uses a 1\/4-18 female pipe connection. The two main positions remain nominal size 24 and 24, so all three connection details should be verified together.\u003c\/p\u003e\u003cp\u003eUnlike the JIC-to-JIC families, GP6400 combines JIC and O-ring connection styles on its primary path. If the same 24\/24 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6400-24-24-04FB.\u003c\/p\u003e\u003cp\u003eConfirm all three connection points against the installation rather than substituting solely on the basis of the GP6400 family name.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735473917,"sku":"GP6400-24-24-04FP (Tompkins)","price":140.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6400-24-24-04fp-guage-port-1596904.jpg?v=1770872646"},{"product_id":"gp6504-04-04-04fb-tompkins","title":"GP6504-04-04-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eFor a 04-to-04 nominal-size connection that also needs a gauge takeoff, GP6504-04-04-04FB is the corresponding Tompkins GP6504 configuration.\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eThe GP6504 family adds a female JIC swivel to the primary connection path, paired with a male JIC connection.\u003c\/p\u003e\u003cp\u003eThe specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735572221,"sku":"GP6504-04-04-04FB (Tompkins)","price":18.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-04-04-04fb-guage-port-4260509.jpg?v=1770872647"},{"product_id":"gp6504-04-04-04fp-tompkins","title":"GP6504-04-04-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe GP6504-04-04-04FP gauge port is built around a male JIC connection paired with a female JIC swivel, with nominal sizes 04 and 04 and a separate gauge connection. GP6504 is the swivel option in this group, using a male JIC connection opposite a female JIC swivel.\u003c\/p\u003e\u003cp\u003eThis 04\/04 configuration is one of the more compact nominal-size choices in the family. The gauge takeoff is threaded 1\/4-18 female pipe. That thread should be checked separately from the two primary fitting sizes, because the SAE O-ring version of the family uses a different third-port connection.\u003c\/p\u003e\u003cp\u003eIf the same 04\/04 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-04-04-04FB. Before ordering, compare the family, both nominal sizes, and the third-port thread with the fitting already on the equipment.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735637757,"sku":"GP6504-04-04-04FP (Tompkins)","price":18.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-04-04-04fp-guage-port-3910050.jpg?v=1770872646"},{"product_id":"gp6504-06-06-04fb-tompkins","title":"GP6504-06-06-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eIf the existing plumbing uses Tompkins' GP6504 JIC swivel pattern, GP6504-06-06-04FB is the version sized 06\/06 with a -04 SAE O-ring port.\u003c\/p\u003e\u003cp\u003eThe swivel geometry distinguishes GP6504 from the fixed JIC-to-JIC designs. Tompkins lists the fitting material as steel.\u003c\/p\u003e\u003cp\u003ePrimary fit is determined by the 06 and 06 nominal sizes, while the gauge side is determined by the 7\/16-20 female O-ring third-port thread.\u003c\/p\u003e\u003cp\u003eThis 06\/06 configuration is one of the more compact nominal-size choices in the family. Because several GP6504 models share the same basic shape, use the part number and connection data below as the final fit check.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735736061,"sku":"GP6504-06-06-04FB (Tompkins)","price":19.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-06-06-04fb-guage-port-9851867.jpg?v=1770872647"},{"product_id":"gp6504-06-06-04fp-tompkins","title":"GP6504-06-06-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eGP6504-06-06-04FP belongs to the GP6504 gauge-port line and is distinguished by a 06\/06 primary size pairing together with its -04 female pipe port. The gauge connection is 1\/4-18 female pipe. If the mating gauge or test hardware uses the other port style, the corresponding alternate model should be selected instead.\u003c\/p\u003e\u003cp\u003eOn GP6504, one side is a male JIC connection and the other is a female JIC swivel; Tompkins specifies steel construction. This 06\/06 configuration is one of the more compact nominal-size choices in the family.\u003c\/p\u003e\u003cp\u003eIf the same 06\/06 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-06-06-04FB. Match the 06\/06 primary sizing first, then confirm the gauge-port thread shown in the specifications.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735867133,"sku":"GP6504-06-06-04FP (Tompkins)","price":19.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-06-06-04fp-guage-port-4755334.jpg?v=1770872647"},{"product_id":"gp6504-08-08-04fb-tompkins","title":"GP6504-08-08-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eOn GP6504-08-08-04FB, Tompkins combines the JIC swivel fitting path with a third connection specifically for the pressure gauge.\u003c\/p\u003e\u003cp\u003eThe GP6504 family adds a female JIC swivel to the primary connection path, paired with a male JIC connection. The FB designation matters here: this model's gauge takeoff is 7\/16-20 female O-ring, not the female pipe style offered elsewhere in the same family.\u003c\/p\u003e\u003cp\u003eThe 08\/08 pairing sits in the middle of the available nominal-size range, making the part number itself important when comparing adjacent sizes.\u003c\/p\u003e\u003cp\u003eReview the nominal sizes and gauge-port thread together before treating another GP6504 part number as interchangeable.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080735932669,"sku":"GP6504-08-08-04FB (Tompkins)","price":25.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-08-08-04fb-guage-port-6336565.jpg?v=1770872647"},{"product_id":"gp6504-08-08-04fp-tompkins","title":"GP6504-08-08-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe quickest way to distinguish GP6504-08-08-04FP from neighboring GP6504 part numbers is the combination of 08\/08 nominal sizes and the -04 female pipe port. The 08\/08 pairing sits in the middle of the available nominal-size range, making the part number itself important when comparing adjacent sizes.\u003c\/p\u003e\u003cp\u003eThink of the part as three checks: first nominal size 08, second nominal size 08, and finally the 1\/4-18 female pipe gauge connection.\u003c\/p\u003e\u003cp\u003eGP6504 is the swivel option in this group, using a male JIC connection opposite a female JIC swivel. If the same 08\/08 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-08-08-04FB.\u003c\/p\u003e\u003cp\u003eFor replacement selection, the safest match is the complete connection set—not just the series or overall appearance of the fitting.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736030973,"sku":"GP6504-08-08-04FP (Tompkins)","price":25.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-08-08-04fp-guage-port-3323141.jpg?v=1770872646"},{"product_id":"gp6504-10-10-04fb-tompkins","title":"GP6504-10-10-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP6504-10-10-04FB is not just another GP6504 gauge port; it is the exact 10\/10 nominal-size version using the FB gauge-port configuration.\u003c\/p\u003e\u003cp\u003eTompkins specifies the third connection as 7\/16-20 female O-ring. Matching that gauge-port thread prevents confusing this FB version with the otherwise similar female pipe configuration. The 10\/10 pairing sits in the middle of the available nominal-size range, making the part number itself important when comparing adjacent sizes.\u003c\/p\u003e\u003cp\u003eThe swivel geometry distinguishes GP6504 from the fixed JIC-to-JIC designs. Tompkins lists the fitting material as steel.\u003c\/p\u003e\u003cp\u003eUse the structured specifications to verify that the primary sizes and gauge-port style match the existing connection.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736227581,"sku":"GP6504-10-10-04FB (Tompkins)","price":31.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-10-10-04fb-guage-port-4178382.jpg?v=1770872588"},{"product_id":"gp6504-10-10-04fp-tompkins","title":"GP6504-10-10-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eTompkins part GP6504-10-10-04FP pairs a JIC swivel body with nominal sizes 10 and 10, then adds a -04 female pipe port as the gauge connection. On GP6504, one side is a male JIC connection and the other is a female JIC swivel; Tompkins specifies steel construction.\u003c\/p\u003e\u003cp\u003eAt nominal size 10 on both primary connections, this version occupies the mid-range of the family rather than either size extreme. Because Tompkins offers parallel FP and alternate-port versions, the third connection deserves its own fit check. On GP6504-10-10-04FP, it is 1\/4-18 female pipe.\u003c\/p\u003e\u003cp\u003eIf the same 10\/10 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-10-10-04FB. Confirm all three connection points against the installation rather than substituting solely on the basis of the GP6504 family name.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736325885,"sku":"GP6504-10-10-04FP (Tompkins)","price":31.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-10-10-04fp-guage-port-7472099.jpg?v=1770872588"},{"product_id":"gp6504-12-12-04fb-tompkins","title":"GP6504-12-12-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eFor buyers replacing an existing gauge-port fitting, GP6504-12-12-04FB matches a JIC swivel arrangement with 12 and 12 nominal connections.\u003c\/p\u003e\u003cp\u003eThe GP6504 family adds a female JIC swivel to the primary connection path, paired with a male JIC connection.\u003c\/p\u003e\u003cp\u003eTompkins identifies the gauge side as 7\/16-20 female O-ring; that third-port specification is independent of the nominal sizing on the main flow path.\u003c\/p\u003e\u003cp\u003eAt nominal size 12 on both primary connections, this version occupies the mid-range of the family rather than either size extreme. The specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736391421,"sku":"GP6504-12-12-04FB (Tompkins)","price":34.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-12-12-04fb-guage-port-7251294.jpg?v=1770872588"},{"product_id":"gp6504-12-12-04fp-tompkins","title":"GP6504-12-12-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eWithin Tompkins' pressure-test fitting range, GP6504-12-12-04FP provides a JIC swivel path and a dedicated -04 female pipe port in one gauge-port configuration. At the gauge connection, Tompkins calls out 1\/4-18 female pipe. That is the detail most likely to separate this part from another GP6504 model with the same 12\/12 primary sizing.\u003c\/p\u003e\u003cp\u003eGP6504 is the swivel option in this group, using a male JIC connection opposite a female JIC swivel. At nominal size 12 on both primary connections, this version occupies the mid-range of the family rather than either size extreme.\u003c\/p\u003e\u003cp\u003eIf the same 12\/12 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-12-12-04FB. Before ordering, compare the family, both nominal sizes, and the third-port thread with the fitting already on the equipment.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736489725,"sku":"GP6504-12-12-04FP (Tompkins)","price":34.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-12-12-04fp-guage-port-7694521.jpg?v=1770872588"},{"product_id":"gp6504-16-16-04fb-tompkins","title":"GP6504-16-16-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eThe GP6504-16-16-04FB part number identifies a specific GP6504 connection package: JIC swivel, nominal size 16, nominal size 16, and the FB gauge-port style.\u003c\/p\u003e\u003cp\u003eThe swivel geometry distinguishes GP6504 from the fixed JIC-to-JIC designs. Tompkins lists the fitting material as steel. The gauge takeoff is not interchangeable across every GP6504 part. GP6504-16-16-04FB uses 7\/16-20 female O-ring, while related models can use the female pipe port style.\u003c\/p\u003e\u003cp\u003eThe 16\/16 primary size combination separates this model from the smaller gauge-port fittings in the same family.\u003c\/p\u003e\u003cp\u003eBecause several GP6504 models share the same basic shape, use the part number and connection data below as the final fit check.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736588029,"sku":"GP6504-16-16-04FB (Tompkins)","price":51.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-16-16-04fb-guage-port-2589761.jpg?v=1770872588"},{"product_id":"gp6504-16-16-04fp-tompkins","title":"GP6504-16-16-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eGP6504-16-16-04FP 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.\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eOn 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.\u003c\/p\u003e\u003cp\u003eMatch the 16\/16 primary sizing first, then confirm the gauge-port thread shown in the specifications.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736653565,"sku":"GP6504-16-16-04FP (Tompkins)","price":51.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-16-16-04fp-guage-port-4418874.jpg?v=1770872588"},{"product_id":"gp6504-20-20-04fb-tompkins","title":"GP6504-20-20-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eUse GP6504-20-20-04FB where the main connection must remain JIC swivel and the gauge connection needs to be the FB version of the GP6504 family.\u003c\/p\u003e\u003cp\u003eThe 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. The 20\/20 primary size combination separates this model from the smaller gauge-port fittings in the same family.\u003c\/p\u003e\u003cp\u003eThe GP6504 family adds a female JIC swivel to the primary connection path, paired with a male JIC connection.\u003c\/p\u003e\u003cp\u003eReview the nominal sizes and gauge-port thread together before treating another GP6504 part number as interchangeable.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736751869,"sku":"GP6504-20-20-04FB (Tompkins)","price":93.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-20-20-04fb-guage-port-8667132.jpg?v=1770872588"},{"product_id":"gp6504-20-20-04fp-tompkins","title":"GP6504-20-20-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eTompkins configures GP6504-20-20-04FP for a JIC swivel primary connection path, then adds pressure-gauge access through a dedicated third port. GP6504 is the swivel option in this group, using a male JIC connection opposite a female JIC swivel.\u003c\/p\u003e\u003cp\u003eThe matching 20\/20 nominal sizing puts this model toward the larger half of the family. The gauge takeoff is threaded 1\/4-18 female pipe. That thread should be checked separately from the two primary fitting sizes, because the SAE O-ring version of the family uses a different third-port connection.\u003c\/p\u003e\u003cp\u003eIf the same 20\/20 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-20-20-04FB. For replacement selection, the safest match is the complete connection set—not just the series or overall appearance of the fitting.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736817405,"sku":"GP6504-20-20-04FP (Tompkins)","price":93.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-20-20-04fp-guage-port-4849226.jpg?v=1770872588"},{"product_id":"gp6504-24-24-04fb-tompkins","title":"GP6504-24-24-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP6504-24-24-04FB combines two job-critical selection points—24\/24 nominal primary sizes and a -04 SAE O-ring port—within the GP6504 family.\u003c\/p\u003e\u003cp\u003eThe swivel geometry distinguishes GP6504 from the fixed JIC-to-JIC designs. Tompkins lists the fitting material as steel.\u003c\/p\u003e\u003cp\u003ePrimary fit is determined by the 24 and 24 nominal sizes, while the gauge side is determined by the 7\/16-20 female O-ring third-port thread.\u003c\/p\u003e\u003cp\u003eThe 24\/24 nominal sizing places this model at the large end of the family. Use the structured specifications to verify that the primary sizes and gauge-port style match the existing connection.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080736948477,"sku":"GP6504-24-24-04FB (Tompkins)","price":128.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-24-24-04fb-guage-port-3819147.jpg?v=1770872588"},{"product_id":"gp6504-24-24-04fp-tompkins","title":"GP6504-24-24-04FP Tompkins JIC Swivel Gauge Port, -04 Female Pipe Port","description":"\u003cp\u003eThe connection geometry on GP6504-24-24-04FP is the key: a male JIC connection paired with a female JIC swivel, plus a dedicated gauge port specified separately from the main fitting path. The gauge connection is 1\/4-18 female pipe. If the mating gauge or test hardware uses the other port style, the corresponding alternate model should be selected instead.\u003c\/p\u003e\u003cp\u003eOn GP6504, one side is a male JIC connection and the other is a female JIC swivel; Tompkins specifies steel construction. The 24\/24 nominal sizing places this model at the large end of the family.\u003c\/p\u003e\u003cp\u003eIf the same 24\/24 primary sizes are needed with the SAE O-ring gauge-port style, the corresponding alternate part is GP6504-24-24-04FB. Confirm all three connection points against the installation rather than substituting solely on the basis of the GP6504 family name.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080737079549,"sku":"GP6504-24-24-04FP (Tompkins)","price":128.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-24-24-04fp-guage-port-6532242.jpg?v=1770872589"},{"product_id":"gp6504-32-32-04fb-tompkins","title":"GP6504-32-32-04FB Tompkins JIC Swivel Gauge Port, -04 SAE O-Ring Port","description":"\u003cp\u003eGP6504-32-32-04FB is the 32\/32 nominal-size member of Tompkins' GP6504 family, combining a JIC swivel fitting layout with a dedicated -04 SAE O-ring port for pressure-gauge access.\u003c\/p\u003e\u003cp\u003eThe GP6504 family adds a female JIC swivel to the primary connection path, paired with a male JIC connection. The FB designation matters here: this model's gauge takeoff is 7\/16-20 female O-ring, not the female pipe style offered elsewhere in the same family.\u003c\/p\u003e\u003cp\u003eBoth primary connections are nominal size 32, making this one of the largest configurations in the series.\u003c\/p\u003e\u003cp\u003eThe specification table below provides the final check for family, gauge-port type, and both nominal connection sizes.\u003c\/p\u003e","brand":"Tompkins","offers":[{"title":"Default Title","offer_id":47080737276157,"sku":"GP6504-32-32-04FB (Tompkins)","price":357.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/gp6504-32-32-04fb-guage-port-2147229.jpg?v=1770872588"}],"url":"https:\/\/gethydraulics.com\/collections\/gauge-ports.oembed?page=4","provider":"Union Hydraulics","version":"1.0","type":"link"}