Parker FB4EU4-HBLK Push-to-connect Union 1/4 in Od

Product Description

The PARKER FB4EU4-HBLK is a push-to-connect union tube fitting designed for fast, tool-free connections in fluid and pneumatic systems. Built from Kynar (PVDF), the fitting handles aggressive media where standard acetal or nylon fittings fall short. It accepts 1/4 inch OD tubing on both sides and is rated to 250 psi working pressure, with a vacuum rating of 28 in-Hg. The black color and FKM O-ring construction suit installations where chemical resistance and visual identification both matter. Licensed plumbers, industrial mechanics, and process technicians install this fitting in chemical handling, semiconductor, and specialty fluid-distribution applications.

This fitting is suited for residential and light industrial fluid systems requiring a leak-free union connection without threading or soldering. It is commonly installed in chemical dosing lines, water treatment systems, and other applications where Kynar materials are specified for compatibility with corrosive or high-purity fluids. The push-to-connect design allows for quick line assembly and serviceability in tight spaces.

Key Features

• Kynar (PVDF) body construction for broad chemical resistance
• Push-to-connect design allows tool-free tube insertion and removal
• Rated to 250 psi working pressure
• Vacuum rated to 28 in-Hg for low-pressure suction applications
• FKM O-ring for compatibility with aggressive fluids and elevated temperatures
• Black color coding for visual system identification

Compatibility

Designed as an OEM-style push-to-connect union fitting for 1/4 inch OD tubing in fluid and pneumatic distribution systems requiring Kynar wetted materials.

Installation Notes

Installation is performed by a licensed plumber or qualified industrial mechanic. Depressurize and drain the line fully before disconnecting any existing fitting. Ensure tubing is cut cleanly and squarely with no burrs before inserting into the fitting to achieve a proper seal. Follow applicable plumbing codes and the tubing manufacturer recommendations for compatible OD tolerances.