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The SUPCO SBF58 is a 5/8-inch flare fitting designed for refrigerant line connections in HVAC and refrigeration systems. Flare fittings of this type create a leak-resistant mechanical seal without the need for solder, making them a reliable choice for field service work on refrigerant circuits. The SBF58 belongs to the SB1 series and is sized at 5/8 inches to match standard flare connections on suction or liquid line components. HVAC technicians and refrigeration service professionals install this type of fitting when making or repairing refrigerant line connections during system service or equipment replacement.
The SBF58 is suited for residential and light-commercial HVAC and refrigeration applications where a 5/8-inch flare connection is required. Typical use cases include connecting refrigerant lines at service valves, manifold gauge sets, and line set terminations. Its SB1 series designation identifies it within the SUPCO fitting lineup for straightforward parts identification and ordering.
Designed as an OEM-style replacement or service fitting for HVAC and refrigeration systems requiring a 5/8-inch flare connection.
Installation should be performed by a licensed HVAC technician or refrigeration service professional. Recover all refrigerant from the system before opening any refrigerant circuit, in compliance with EPA Section 608 regulations. Use a calibrated flare tool to ensure the mating flare seat is clean and properly formed before tightening the fitting. Do not overtighten flare connections, as over-torquing can deform the flare seat and cause leaks.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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