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The MIDLAND INDUSTRIES 660012 is a steel swivel branch tee adapter designed for hydraulic line assemblies. It provides a three-port junction with a 3/4-inch Male JIC inlet, a second 3/4-inch Male JIC port, and a 3/4-inch Female JIC swivel outlet. The swivel feature on the female port allows for rotational alignment during installation, reducing stress on hydraulic hose assemblies. Rated to 3000 psi working pressure and 375 degrees F operating temperature, this fitting is built for demanding industrial and mobile hydraulic applications. Licensed hydraulic technicians and fluid power specialists are the primary installers.
This fitting is suited for use in steel hydraulic circuits where branch connections are needed without disrupting the main line flow path. Common installation scenarios include mobile equipment hydraulics, industrial machinery, and agricultural equipment fluid power systems. The 1-1/16-12 thread specification corresponds to the standard 3/4-inch JIC 37-degree flare thread, making it compatible with standard JIC-threaded hydraulic components throughout those systems.
Designed as an OEM-style replacement and direct-fit adapter for steel hydraulic systems using 3/4-inch JIC 37-degree flare threaded connections at 3000 psi operating pressure.
Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit fully before removing or installing any fittings. JIC 37-degree flare connections are assembled finger-tight then turned an additional specified number of flats per standard hydraulic assembly practice - do not overtighten, as overtightening can deform the flare seat and cause leaks. Inspect all mating flare seats for damage before assembly and follow applicable industry standards for hydraulic fitting installation.
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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