Parker 42F-10 Brass Flared Tube Union 5/8 in 45 Degree

Product Description

The PARKER 42F-10 is a brass flared tube union designed to join two flared tube lines with matching 45-degree flare seats. It accepts 5/8 inch tube OD on both ends using a Flare x Flare end connection and a 7/8-14 UNF thread. With a maximum working pressure of 650 psi and a maximum working temperature of 250 degrees F, this fitting is rated for demanding fluid and refrigerant line service. The overall length is 2.1 inches and the unit weighs 0.2 pounds. HVAC technicians, refrigeration mechanics, and plumbers install this type of union when a tube run must be coupled or serviced at a mid-line joint.

This fitting is suited for residential and light commercial HVAC and refrigeration systems, as well as hydraulic and pneumatic tubing applications that call for SAE 45-degree flare connections. Typical installations include refrigerant suction and liquid lines, fuel lines, and compressed air distribution where a reusable, pressure-rated union is required. The all-brass construction resists corrosion in both indoor and outdoor service environments. Installation is performed by licensed HVAC technicians or plumbers following applicable system service procedures.

Key Features

• 45-degree flare seat on both ends provides a leak-resistant metal-to-metal seal
• Brass construction offers corrosion resistance for refrigerant, fuel, and pneumatic service
• 7/8-14 UNF thread conforms to SAE J512 and SAE J513 standards
• Rated to 650 psi maximum working pressure
• Rated to 250 degrees F maximum working temperature
• UL Listed; meets SAE J512, SAE J513 standards

Compatibility

Designed as an OEM-style replacement or service fitting for systems using SAE 45-degree flare connections with 5/8 inch tube OD and 7/8-14 UNF threaded nuts.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Depressurize and recover any refrigerant or fluid from the system before disassembling tube connections. Use a backup wrench on the union body when tightening flare nuts to avoid twisting the tube. Do not over-torque flare nuts, as over-tightening can crack the flare seat and cause leaks.