Parker FB5MC4-HBLK Push-to-connect Connector 5/16 Od

Product Description

The PARKER FB5MC4-HBLK is a push-to-connect tube-to-pipe connector fitting designed for quick, tool-free tube connections in fluid handling and pneumatic systems. It accepts 5/16 inch OD tubing and threads into a 1/4 inch NPTF port. The body is molded from Kynar, a chemically resistant thermoplastic, and the fitting is finished in black. The FKM O-ring provides a reliable seal across a wide range of media. Rated to 250 psi and a vacuum rating of 28 inches Hg, this fitting suits applications where both pressure and vacuum service may be required. Licensed plumbers, HVAC technicians, and fluid system installers are the typical end users.

This fitting is suited for residential and light commercial fluid or pneumatic line installations where a corrosion-resistant, push-to-connect straight connector is needed. The Kynar construction makes it appropriate for mildly aggressive chemical environments. Typical installations include water treatment systems, chemical dispensing lines, HVAC condensate and refrigerant-adjacent tubing runs, and instrumentation plumbing. The NPTF thread type ensures a pressure-tight connection into standard tapered pipe ports without the need for additional thread sealant in many applications, though local codes and manufacturer guidelines should always be consulted.

Key Features

• Push-to-connect design allows fast, tool-free tube insertion for 5/16 inch OD tubing
• Kynar body offers strong resistance to chemicals, UV exposure, and moisture
• FKM O-ring provides a reliable seal compatible with a broad range of fluid media
• Rated to 250 psi working pressure and 28 inches Hg vacuum
• 1/4 inch NPTF male thread for pressure-tight connection into tapered pipe ports
• Black color finish for identification and low-visibility installations

Compatibility

Designed as an OEM-style push-to-connect straight connector for 5/16 inch OD tubing and 1/4 inch NPTF threaded ports in fluid handling, pneumatic, and light chemical plumbing systems.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or fluid systems technician. Shut off system pressure and depressurize all lines before disassembling or installing any fitting. Ensure tubing is cut square, deburred, and fully inserted to the fitting stop for a leak-free connection. Verify that the NPTF thread engagement meets the requirements of applicable codes such as the IPC or IFGC before restoring system pressure.