Parker 66AB-10-6 Compression Tube Connector 3/8-18 Nptf

Product Description

The PARKER 66AB-10-6 is a brass compression tube connector designed to create a secure, leak-resistant joint between a compression tube end and a female NPT port. Constructed from brass, this connector handles working pressures up to 400 psi and operates across a temperature range of -65 degrees F to 250 degrees F. The NPTF thread standard ensures a pressure-tight mechanical seal without relying solely on thread sealant. This fitting is suited for plumbing, HVAC, refrigeration, and fluid-system applications where a reliable compression-to-female-NPT transition is required. Licensed plumbers, HVAC technicians, and fluid-systems mechanics are the primary installers.

This connector is used in residential and light commercial applications involving tubing runs that terminate at a female NPT port on valves, manifolds, gauges, or equipment panels. The compression end grips the tube mechanically, making it appropriate for copper or compatible soft-metal tubing. The 3/8-18 NPTF thread size is a common port size found on a wide range of HVAC, plumbing, and instrumentation components, making this connector a standard transition fitting in those systems.

Key Features

• Brass construction for corrosion resistance in fluid and gas service
• Compression x FNPT end connections for tubing-to-threaded-port transitions
• Rated to 400 psi maximum working pressure
• Wide service temperature range: -65 degrees F to 250 degrees F
• NPTF thread standard provides a pressure-tight mechanical seal
• 3/8-18 thread size fits common valves, manifolds, and equipment ports

Compatibility

Designed as an OEM-style replacement or service fitting for compression tube connector applications using 3/8-18 NPTF female ports in residential and commercial fluid or gas systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician. Depressurize and isolate the system before removing or installing any compression fittings. Use appropriate tube-cutting and deburring tools to ensure a clean, square tube end before seating the compression ferrule. Consult applicable plumbing codes, including IPC guidelines, for approved fitting materials and pressure ratings in your jurisdiction.