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The PARKER PS1210102-12-12 is a straight inline hydraulic hose fitting that transitions from a male NPT thread to a female NPT swivel connection. Built from steel with a 3/4-inch body diameter and a 3/4-14 thread size, this fitting is rated for continuous working pressures up to 5,000 psi. The swivel feature on the female NPT end allows the mating hose or line to be positioned and tightened without twisting the assembly, reducing installation stress and the risk of thread damage. It is part of the Parker PS Series and is sized for 3/4-inch hose. Licensed hydraulic technicians and industrial pipe fitters install this fitting in fluid power circuits where rigid or semi-rigid hydraulic lines require a rotatable threaded junction.
This fitting is suited for high-pressure hydraulic systems in industrial, mobile, and construction equipment applications. The straight inline configuration makes it appropriate for installations where the hose and port are coaxially aligned and a swivel connection is needed to simplify assembly or service. It is commonly installed in hydraulic pump outlet ports, cylinder circuits, and valve manifold connections that use NPT-threaded ports and require 3/4-inch hose routing.
Designed as an OEM-style replacement or new-installation fitting for hydraulic systems using 3/4-inch hose with NPT-threaded ports rated to 5,000 psi.
Installation should be performed by a qualified hydraulic technician or industrial pipefitter. Depressurize and isolate the hydraulic circuit completely before removing or installing any fittings. Apply an appropriate thread sealant to the male NPT threads per the system fluid and pressure requirements. Do not over-torque the swivel nut, as this can damage the swivel seat and restrict rotation.
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