Parker FB4RD6-HBLK Push-to-connect Plug-in Reducer Fitting

Product Description

The PARKER FB4RD6-HBLK is a push-to-connect plug-in reducer tube fitting designed to join two different tubing sizes without tools or thread cutting. It connects 1/4 inch OD tubing to a 3/8 inch ID port or fitting in a single push motion. The body is molded in Kynar (PVDF), a chemical-resistant fluoropolymer well suited for fluid handling systems carrying aggressive media. An FKM o-ring provides the sealing interface at each connection point. Rated to 300 psi and with a vacuum rating of 28 in-Hg, this fitting handles both pressure and vacuum service. HVAC, plumbing, and industrial fluid-system technicians install this type of fitting where a quick-disconnect reducer is needed in a tubing run.

This fitting is used in applications requiring a reduction between two tube sizes in push-to-connect plumbing or fluid distribution systems. The Kynar construction makes it appropriate for environments involving mildly aggressive chemicals, deionized water, or other media incompatible with standard acetal or nylon fittings. The black color coding assists in quick field identification. It is sold individually and is suited for residential, light commercial, and industrial installations where tool-free tube connections are specified.

Key Features

• Kynar (PVDF) body construction for broad chemical resistance
• FKM o-ring seal compatible with a wide range of fluid media
• 300 psi pressure rating for moderate-pressure service
• 28 in-Hg vacuum rating supports vacuum-side plumbing runs
• Tool-free push-to-connect installation reduces labor time
• Black color for field identification; connects 1/4 inch OD tube to 3/8 inch ID port

Compatibility

Designed as an OEM-style push-to-connect reducer for tubing systems using 1/4 inch OD and 3/8 inch ID connections in fluid handling, HVAC, or light industrial plumbing applications.

Installation Notes

Installation is performed by plumbing or fluid-system technicians. Before servicing, depressurize and drain the line completely. Tubing should be cut cleanly and squarely with a tube cutter; deburr the cut end before insertion to ensure a proper seal. Do not exceed the rated pressure or temperature limits for the fitting material and o-ring combination.