Parker 4 HL6-S Swivel Union Orfs Steel 1/4 in Od 9200 Psi

Product Description

The PARKER 4 HL6-S is a compression tube swivel union with an O-Ring Face Seal (ORFS) end connection, designed for high-pressure hydraulic and fluid system applications. Constructed from steel, this fitting connects two tube ends through a swivel interface that allows rotational alignment during installation without compromising seal integrity. The ORFS design uses a flat face with an O-ring to create a leak-resistant connection, making it well suited for systems operating at pressures up to 9200 psi. The 1/4 inch tube outside diameter and UNF thread standard are consistent with industry-standard hydraulic plumbing configurations. Hydraulic technicians and fluid power specialists are the primary installers of this fitting.

This swivel union is used in mobile hydraulic equipment, industrial machinery, and fluid power systems where tube routing requires a rotatable connection point. The ORFS interface is commonly specified in high-pressure circuits where leak-free performance is critical and vibration or movement is present. It is suitable for both OEM assembly and field service repair on systems using 1/4 inch OD tubing with UNF-threaded ORFS ports.

Key Features

• O-Ring Face Seal (ORFS) end connections for leak-resistant high-pressure performance
• Swivel union design allows rotational alignment during assembly without twisting the tube
• Steel construction for durability in demanding hydraulic environments
• Rated to 9200 psi maximum working pressure
• 1/4 inch tube outside diameter with UNF thread standard

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic and fluid power systems using 1/4 inch OD tubing with ORFS ports and UNF thread connections.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and de-energize the hydraulic system completely before removing or installing any fittings. Inspect the O-ring for damage before assembly and ensure the mating face is clean and free of debris to achieve a proper seal. Follow the equipment manufacturer's torque specifications and applicable industry standards for ORFS fittings during final assembly.