Parker 16 HX6-S Steel Swivel Union Female Adapter 1 in

Product Description

The PARKER 16 HX6-S is a steel swivel union female adapter designed for flared tube connections in high-pressure fluid and pneumatic systems. It features a 37-degree flare angle on both ends, conforming to SAE J514 and ISO 8434-2 standards. The swivel design allows the female end to rotate during assembly, reducing torque transfer to tubing and minimizing the risk of tube twist or seal distortion. Rated to 500 degrees F, this fitting is suited for demanding environments where temperature resistance and leak-free performance are required. Plumbers, pipefitters, and hydraulic system technicians install this type of fitting during line assembly and repair.

The 16 HX6-S is used in hydraulic lines, fuel systems, and refrigeration or air conditioning tubing circuits that require a flare-to-flare swivel union connection. It accepts 1 inch tube OD flared ends and is appropriate for both new installations and replacement of existing union adapters in industrial, commercial, and heavy-equipment applications. The swivel feature is particularly useful in tight or restricted routing where aligning two fixed fittings would be impractical.

Key Features

• 37-degree flare angle on both ends per SAE J514 and ISO 8434-2
• Swivel union design reduces torsional stress on tubing during tightening
• Steel construction handles temperatures up to 500 degrees F
• 1 inch tube OD sizing for standard large-bore flared line connections
• Overall length of 2.75 inches for compact inline installation
• Meets SAE 070108, SAE J514, and ISO 8434-2 standards

Compatibility

Designed as an OEM-style replacement or new-install fitting for hydraulic, fuel, and fluid systems using 1 inch OD 37-degree flared tube connections per SAE J514 specifications.

Installation Notes

Installation should be performed by a licensed pipefitter, hydraulic technician, or qualified mechanic. Depressurize and drain the line completely before removing or installing any fitting. Hand-tighten the swivel nut first to confirm thread engagement, then torque to the system specification using a calibrated flare fitting wrench — do not over-tighten, as steel flare seats can crack under excessive load. Verify the flare cone on each tube end is clean, properly formed, and free of cracks before assembly.