Parker 48IFHD-5-4 Brass Inverted Male Flare Connector

Product Description

The PARKER 48IFHD-5-4 is a brass inverted male flare connector designed to join flared tubing to male NPTF threaded ports in hydraulic, refrigeration, and fluid-transfer systems. It features a 5/16-inch tube OD flare end and a 1/4-18 MNPTF threaded end, providing a leak-resistant mechanical connection rated for pressures up to 1200 psi and temperatures up to 250 degrees F. The all-brass construction resists corrosion and holds up in demanding service environments. Licensed plumbers, HVAC technicians, and hydraulic system installers use this fitting where inverted flare tube lines must terminate at an NPTF port on a valve, manifold, or component body.

This fitting is suited for residential and light commercial applications involving refrigerant lines, fuel lines, hydraulic circuits, and other fluid systems that use inverted flare tubing. It is a direct inline connector intended for installations where a flared 5/16-inch OD tube must mate to a 1/4-18 NPTF threaded port. The compact overall length of 0.98 inches makes it appropriate for tight-clearance installations. It meets SAE J51 dimensional standards and carries UL Listing, confirming compliance with recognized industry performance and safety benchmarks.

Key Features

• Inverted flare to male NPTF end configuration for direct tube-to-port connections
• Rated to 1200 psi maximum working pressure for demanding fluid-system service
• Rated to 250 degrees F maximum working temperature
• Brass construction for corrosion resistance and long service life
• Meets SAE J51 standards and is UL Listed
• Compact 0.98-inch overall length suits tight installation clearances

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems using 5/16-inch OD inverted flare tubing with 1/4-18 NPTF threaded port connections, conforming to SAE J51 dimensional standards.

Installation Notes

Installation should be performed by a licensed HVAC technician, plumber, or qualified hydraulic technician. Depressurize and isolate the system completely before removing or installing any fitting. Hand-tighten the NPTF threads before applying a wrench to avoid cross-threading, and do not overtighten, as brass fittings are susceptible to thread damage. Verify that the mating flare seat is clean and undamaged before assembly to ensure a leak-free connection.