Parker FAFS-66 Female Straight Compression Tube Adapter

Product Description

The PARKER FAFS-66 is a female straight compression tube adapter designed for use with 3/8-inch outside diameter tubing. It provides a reliable, leak-resistant connection between compression tubing and a female pipe thread end. The fitting body is constructed from Perfluoroalkoxy (PFA) and Polytetrafluoroethylene (PTFE), making it well suited for applications that require high chemical resistance and purity. The plastic grip type allows for secure tube retention without metallic contact. This fitting is typically installed by plumbers, chemical process technicians, or instrumentation specialists working with high-purity fluid or chemical transfer lines.

This adapter is intended for use in systems where chemically resistant fluoropolymer fittings are required. Common applications include laboratory fluid handling, semiconductor fabrication, chemical processing, and high-purity water systems. The PFA and PTFE construction resists a broad range of aggressive media, including acids, solvents, and caustic fluids. It connects 3/8-inch OD compression tubing to a female pipe thread port in a straight, in-line configuration.

Key Features

• 3/8-inch tube outside diameter compression connection for secure, leak-resistant tubing retention
• PFA and PTFE fluoropolymer construction provides excellent chemical resistance across a wide range of media
• Female straight adapter configuration allows direct in-line connection to male pipe thread ports
• Plastic grip type eliminates metallic contact points, supporting high-purity and corrosion-sensitive applications
• Compact, lightweight design at 0.05 pounds for use in tight instrumentation or panel spaces

Compatibility

Designed as an OEM-style replacement or direct-install fluoropolymer compression fitting for high-purity fluid handling and chemical processing systems using 3/8-inch OD tubing with female pipe thread terminations.

Installation Notes

Installation is typically performed by a licensed plumber or instrumentation technician. Shut off system flow and depressurize the line before fitting installation or removal. Hand-tighten the compression nut first, then apply a measured additional turn with a wrench per standard compression fitting practice — do not overtighten fluoropolymer fittings, as PFA and PTFE are softer than metal and susceptible to thread damage under excessive torque. Verify system compatibility with fluoropolymer materials before installation in pressurized or high-temperature service.