Parker 66AB-10-8 Brass Compression Tube Connector

Product Description

The PARKER 66AB-10-8 is a brass compression tube connector designed to join a 5/8-inch outside diameter tube to a female NPT port in fluid and pneumatic plumbing systems. The fitting uses a compression-style tube end combined with a 1/2-14 NPTF female threaded end, creating a leak-resistant mechanical connection without soldering or flaring. Rated to 400 psi maximum working pressure and suitable for service between -65 degrees F and 250 degrees F, this connector handles a wide range of temperatures common in industrial, HVAC, and fluid-transfer applications. Licensed plumbers, pipefitters, and HVAC technicians install this type of fitting in both new construction and retrofit work.

This connector is suited for use in residential and light commercial plumbing, refrigeration piping, hydraulic lines, and pneumatic systems where a tube-to-pipe transition is required. The compression-by-female-NPT configuration is commonly found at control valve inlets, instrumentation ports, and equipment connections where a removable, pressure-rated fitting is needed. Its brass construction provides good corrosion resistance in water, air, and many fluid-service environments.

Key Features

• Compression x FNPT end connections allow tube-to-pipe transitions without soldering or flaring
• Brass construction offers corrosion resistance for water, air, and compatible fluid services
• Rated to 400 psi maximum working pressure for reliable performance in pressurized systems
• Wide temperature range from -65 degrees F to 250 degrees F suits diverse applications
• 1/2-14 NPTF thread standard provides a pressure-tight mechanical seal
• 5/8-inch tube outside diameter compatibility covers common tubing sizes in HVAC and plumbing

Compatibility

Designed as an OEM-style and aftermarket replacement compression tube connector for systems using 5/8-inch OD tubing with a 1/2-14 NPTF female port connection in plumbing, HVAC, and fluid-transfer applications.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable codes such as the IPC or IFGC. Depressurize and isolate the system completely before removing any existing fittings or installing this connector. Ensure the tube end is cut squarely and deburred before seating it into the compression fitting to achieve a proper seal. Do not overtighten the compression nut, as this can damage the ferrule and compromise the connection.