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The PARKER PS1210306-12-12 is a straight inline hydraulic hose fitting that connects a male JIC 37-degree flare to a female JIC 37-degree flare swivel. Machined from steel and rated to 5,000 psi maximum working pressure, it is designed for high-pressure hydraulic fluid transfer applications. The swivel end allows the female side to rotate during assembly, reducing hose twist and simplifying routing. Overall length is 3.38 inches. The 3/4-inch hose size and 1-1/16-12 thread size place this fitting in common medium-to-large hydraulic circuit use. Licensed hydraulic technicians and fluid power mechanics are the typical installers.
This fitting suits hydraulic systems where a JIC-to-JIC inline transition is required with a swivel on the female side for assembly convenience. Typical applications include mobile equipment, industrial hydraulic circuits, and heavy machinery hose assemblies where 5,000 psi working pressure is within system design parameters. The straight, inline configuration makes it a direct in-line adapter between hose ends or between a hose and a fixed-port component. It is part of the PARKER PS series of hydraulic fittings.
Designed as an OEM-style replacement or new-installation fitting for hydraulic hose assemblies requiring a 3/4-inch male JIC to female JIC swivel, straight inline connection at 1-1/16-12 thread size and up to 5,000 psi working pressure.
Installation should be performed by a qualified hydraulic technician or fluid power mechanic. Depressurize and isolate the hydraulic circuit completely before disconnecting or installing any fitting. Clean mating threads and inspect flare seats for damage before assembly. Do not overtighten the swivel nut; refer to applicable system engineering specifications and the fitting manufacturer's assembly guidelines for proper seating of JIC flare connections.
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