Parker 12 Jlo-s Tube Union Orfs 3/4 Inch 6000 Psi Steel

Product Description

The PARKER 12 JLO-S is a compression tube union with O-Ring Face Seal (ORFS) end connections, designed to join two tube runs in high-pressure fluid and hydraulic systems. Constructed from steel, it delivers reliable sealing performance at working pressures up to 6000 psi. The ORFS design provides a leak-free metal-to-metal seat backed by an O-ring, making it well suited for demanding industrial and mobile hydraulic applications. Licensed plumbers, pipefitters, and hydraulic technicians install this fitting where tube continuity and pressure integrity are critical.

This union is sized for 3/4-inch outside diameter tubing and is appropriate for use in hydraulic power units, fluid transfer lines, and industrial process piping where ORFS fittings are specified. It is a direct inline connector, allowing two tube ends to be joined without additional adapters when both ends carry matching ORFS threads. Typical applications include mobile equipment hydraulics, industrial machinery, and high-pressure fluid conveyance systems.

Key Features

• O-Ring Face Seal (ORFS) end connections on both sides for leak-free high-pressure joining
• Rated to 6000 psi maximum working pressure
• Steel construction for durability in high-pressure hydraulic environments
• Sized for 3/4-inch outside diameter tubing
• Union configuration allows inline tube-to-tube connection without additional adapters

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic and fluid transfer systems using 3/4-inch outside diameter tubing with O-Ring Face Seal (ORFS) connections rated at or below 6000 psi.

Installation Notes

Installation should be performed by a licensed pipefitter, hydraulic technician, or qualified mechanic. Depressurize and isolate the hydraulic circuit completely before disassembling any fittings. Inspect the O-ring seating surface for nicks or contamination before assembly, as surface damage is a common cause of ORFS joint leaks. Torque the union nut to the fitting manufacturer's published specifications for the tube size and follow applicable industrial piping codes for your jurisdiction.