Parker 43F-4-5 Brass Flare to Solder 1/4 in Tube 45 Deg

Product Description

The PARKER 43F-4-5 is a brass flare-to-solder fitting designed to connect flared tubing to a solder-joint end in refrigeration, HVAC, and fluid-handling systems. It accepts 1/4-inch tube OD with a 45-degree flare angle and a 7/16-20 UNF thread, transitioning to a 5/16-inch reduced outside diameter solder end. Rated for a maximum working pressure of 1400 psi and a maximum working temperature of 250 degrees F, this fitting is built for demanding system environments. Licensed HVAC technicians and plumbers install this type of fitting during line-set assembly, equipment changeouts, and refrigerant circuit repairs.

This fitting is suited for residential and light commercial HVAC and refrigeration applications where a flared copper tube must transition to a soldered connection. It is commonly used in refrigerant line sets, condensate and fluid lines, and similar systems requiring a leak-free, pressure-rated mechanical joint. The compact overall length of 0.98 inches makes it practical in tight equipment cabinets and panel enclosures. It meets SAE J512, SAE J513, and UL Listing standards, making it appropriate for code-compliant installations.

Key Features

• Flare-to-solder configuration connects a 45-degree flared tube to a soldered end in a single fitting
• 1/4-inch tube OD with 7/16-20 UNF thread for standard SAE flare compatibility
• 5/16-inch reduced outside diameter solder end for proper sweat joint fitment
• Rated to 1400 psi maximum working pressure for high-pressure refrigerant and fluid circuits
• Brass construction provides corrosion resistance and reliable sealing in wet or refrigerant-exposed environments
• Meets SAE J512, SAE J513, and UL Listing standards for code-compliant use

Compatibility

Designed as an OEM-style replacement or new-installation fitting for HVAC, refrigeration, and fluid-handling systems using 1/4-inch OD copper tubing with a 45-degree SAE flare and a solder-joint end connection.

Installation Notes

Installation is performed by licensed HVAC technicians or plumbers. Recover and isolate refrigerant or depressurize the fluid circuit completely before removing or installing any fittings. The flare end requires a properly formed 45-degree flare on the copper tube — use a calibrated flaring tool to avoid leaks. The solder end must be cleaned, fluxed, and sweat-soldered per standard trade practice; avoid overheating the brass body, which can damage sealing surfaces.