Parker 66C-6-8 Compression X Fnpt Tube Connector

Product Description

The PARKER 66C-6-8 is a brass compression tube connector designed to join tubing to a female National Pipe Thread Fuel (FNPT) port in fluid and pneumatic systems. It features a 1/2-14 inch thread size with an NPTF thread standard and a Compression x FNPT end connection configuration. Built to SAE J-512 standards, this fitting handles a maximum working pressure of 200 psi and operates across a wide temperature range of -65 degrees F to 250 degrees F. Licensed plumbers, HVAC technicians, and industrial pipefitters install this type of connector where tubing transitions to a threaded female port are required.

The 66C-6-8 is suited for residential and light commercial fluid handling, pneumatic, and refrigeration-adjacent tubing systems. It is commonly installed in hydraulic lines, compressed air systems, and fuel or oil circuits where a reliable metal-to-metal compression seal at a threaded female port is needed. Brass construction makes it a practical choice in environments where corrosion resistance and moderate pressure ratings are both required.

Key Features

• Compression x FNPT end connections for tubing-to-threaded-port transitions
• 1/2-14 inch NPTF thread standard for reliable pressure-tight engagement
• Brass construction provides corrosion resistance in fluid and pneumatic service
• Rated to 200 psi maximum working pressure
• Wide service temperature range: -65 degrees F to 250 degrees F
• Meets SAE J-512 standards for compression tube fittings

Compatibility

Designed as an OEM-style replacement or new-installation compression tube connector for systems requiring a 1/2-14 inch NPTF Compression x FNPT fitting in brass per SAE J-512.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified pipefitter. Depressurize and isolate the system before removing or installing any compression fitting. Do not overtighten the compression nut, as brass fittings can deform and leak under excessive force. Verify that the tubing outer diameter matches the compression fitting size before assembly, and inspect ferrule seating before pressurizing the system.