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The PARKER FB5ME4-HBLK is a push-to-connect male elbow tube fitting designed for fast, tool-free tubing connections in fluid and pneumatic systems. Built from Kynar (PVDF) with an FKM o-ring, this fitting handles up to 250 psi working pressure and a vacuum rating of 28 in-Hg. It accepts 5/16 inch OD tubing and threads into a 1/4 inch NPTF port. The black color coding aids quick identification during installation and service. HVAC technicians, plumbers, and industrial service professionals install this type of fitting in refrigerant-adjacent, chemical-handling, and general-purpose pneumatic or fluid-transfer lines.
This fitting is suited for residential and light commercial applications where a reliable elbow connection is needed between a 5/16 inch OD tube and a 1/4 inch NPTF male-threaded port. Common install scenarios include condensate management lines, chemical dosing systems, and compressed-air distribution. The Kynar construction offers strong resistance to corrosive fluids and elevated temperatures, making it appropriate in environments where standard nylon or acetal fittings would degrade. The push-to-connect design allows for quick field assembly without additional sealants or ferrule compression tools.
Designed as an OEM-style push-to-connect replacement fitting for systems using 5/16 inch OD tubing and 1/4 inch NPTF threaded ports in fluid transfer or pneumatic applications.
Installation is performed by licensed plumbers, HVAC technicians, or qualified industrial mechanics. Shut off system pressure and depressurize the line completely before removing or installing any push-to-connect fitting. Ensure tubing is cut cleanly and squarely, and that the OD is free of burrs or scoring before insertion. Thread engagement should follow standard NPTF wrench-turn guidance per applicable IPC or IFGC specifications for the system being serviced.
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