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The EATON 2018-4-4S is a steel flared tube female JIC 37-degree swivel to male pipe adapter designed for hydraulic and fluid power plumbing applications. It connects a female JIC 37-degree flare swivel end to a male NPT pipe thread, allowing a reliable transition between flared tube lines and standard tapered pipe fittings. The adapter features a 1/4 inch tube outside diameter, 1/4 inch NPT thread, and is rated for working pressures up to 6000 psi. Constructed from steel, this fitting handles a wide service temperature range and is built to SAE J514 standards. Licensed plumbers, pipefitters, and hydraulic technicians are the typical installers.
This adapter suits residential and commercial fluid power, hydraulic, and pneumatic systems where a JIC 37-degree flared tube line must terminate at a male NPT port. The end connection is flare by NPTF, making it appropriate for hydraulic lines, fuel systems, and other high-pressure fluid circuits requiring a leak-resistant mechanical seal. It is sold individually and ships as a single-piece package.
Designed as an OEM-style replacement or new-installation fitting for hydraulic and fluid power systems using 1/4 inch JIC 37-degree flared tube lines connecting to 1/4 inch NPT male pipe ports.
Installation is typically performed by licensed plumbers, pipefitters, or hydraulic system technicians. Always depressurize and isolate the fluid circuit completely before removing or installing any fitting. Verify that both mating threads and flare seats are clean and undamaged before assembly. Consult applicable system specifications and relevant codes for torque and sealant requirements on NPT connections.
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