Parker 166FSV-8-8 Brass 90 Deg Swivel Nut Elbow 1/2 in

Product Description

The PARKER 166FSV-8-8 is a 90-degree swivel nut elbow fitting manufactured in brass for flared tube connections. It accepts a 1/2-inch tube OD on the flare end and mates to a 3/4-16 UNF swivel nut thread, with a 45-degree flare angle per SAE J512 and SAE J513 standards. The swivel nut design allows the fitting to rotate during make-up, reducing torsional stress on the tube and simplifying installation in tight or congested plumbing runs. Rated to 750 psi maximum working pressure and 250 degrees F, this fitting is suited for refrigerant, hydraulic, and fuel line applications where a reliable, leak-resistant 90-degree direction change is required.

This fitting is commonly used by HVAC technicians, refrigeration mechanics, and plumbers working on residential and light commercial systems. It is well suited for copper tubing assemblies that require a 90-degree turn at a flared connection point, including refrigerant lines, fuel systems, and hydraulic circuits. The swivel end allows positioning adjustments without twisting the tube during final tightening, making it practical for retrofit and service work where access is limited.

Key Features

• 90-degree swivel nut elbow configuration with 45-degree SAE flare angle
• Brass construction for corrosion resistance and compatibility with refrigerant and fuel media
• Rated to 750 psi maximum working pressure
• Maximum working temperature of 250 degrees F (121 degrees C)
• Meets SAE J512, SAE J513, and UL Listing standards
• Swivel nut end reduces tube twist during installation

Compatibility

Designed for use with 1/2-inch OD flared tubing and 3/4-16 UNF threaded connections in systems conforming to SAE J512 and SAE J513 flare fitting standards.

Installation Notes

Installation is typically performed by licensed HVAC technicians, refrigeration mechanics, or plumbers. Always depressurize and evacuate the system before disconnecting or replacing any line fitting. Use a backup wrench on the body when tightening the swivel nut to prevent rotation of the fitting body and avoid deforming the flare. Verify that the tube flare is properly formed and seated before final torque to prevent leaks.