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The PARKER PT-00072 is a steel flared tube reducer fitting designed for high-pressure hydraulic and fluid power line connections. It transitions between tube sizes using a 37-degree flare-to-flare end configuration, with a 3/4 inch tube outside diameter and a 3/4 x 5/8 thread interface. Rated to 5000 psi maximum working pressure, this reducer is built for demanding service in industrial, mobile equipment, and mechanical systems. Installation requires properly flared tubing ends and a correctly sized wrench. Licensed hydraulic technicians, plumbers, and mechanical contractors are the typical installers for this class of fitting.
This fitting is used wherever a tube diameter reduction is needed in a high-pressure fluid line assembly. Common applications include hydraulic systems, refrigeration line sets, and compressed air or fluid distribution networks where 37-degree JIC-style flare connections are specified. The flare-to-flare design allows inline reducing without requiring additional adapters. It is suited for both stationary and mobile equipment installations where steel construction and high working pressure ratings are required.
Designed as an OEM-style replacement or new-installation fitting for hydraulic, refrigeration, and fluid power systems that use 37-degree JIC flare-style tube connections.
Installation should be performed by a qualified hydraulic technician or licensed plumber familiar with flared tube fitting assemblies. Depressurize and drain the system completely before removing or installing any fittings. Ensure tubing ends are cleanly flared to the correct 37-degree angle before assembly to prevent leaks under pressure. Torque to the fitting manufacturer specification using an appropriate flare nut wrench; do not over-tighten, as this can deform the flare seat.
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