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The MIDLAND INDUSTRIES 78254040 is a steel hex nipple adapter designed to connect a 2-1/2 inch British Standard Parallel Pipe (BSPP) port to a 2-1/2 inch Male National Pipe Thread Fuel (NPTF) fitting. Part of the 7032 Series, this adapter is used in hydraulic plumbing systems where British and American pipe thread standards must interface. The hex body allows for standard wrench engagement, enabling proper torque without distorting the fitting. Weighing 2.89 pounds and measuring 3.5 inches in height and 4 inches in width, this is a full-size, heavy-duty adapter suited to demanding hydraulic service environments.
This adapter is used in hydraulic system assemblies requiring a transition between BSPP-ported components, such as hydraulic manifolds, pumps, and valves common in industrial or mobile hydraulic circuits. The NPTF thread on the opposing end creates a dry-seal connection with standard NPT fittings found throughout North American fluid power and plumbing systems. It is appropriate for both stationary and mobile hydraulic applications where thread-standard mismatches must be resolved at the connection point. Installation is typically performed by hydraulic system technicians or pipefitters working on industrial or mobile equipment.
Designed as an OEM-style replacement or drop-in adapter for hydraulic systems requiring a 2-1/2 inch BSPP to 2-1/2 inch Male NPTF connection within the Steel BSPP Adapters product family.
Installation should be performed by a qualified hydraulic technician or pipefitter. Depressurize and isolate the hydraulic circuit completely before removing or installing any fitting. Apply thread sealant appropriate for NPTF dry-seal threads per the system fluid and pressure requirements. Engage the hex body with a proper-sized wrench to avoid rounding the fitting during tightening.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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