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The DAKOTA SOURCING 12678 is a 3/8-inch flare by 3/8-inch male iron pipe (MIP) adapter designed for connecting flare-end tubing to threaded pipe fittings in refrigeration, HVAC, and gas line applications. This lead-free fitting meets modern plumbing and refrigeration safety standards, making it suitable for potable water and refrigerant line work where lead-free compliance is required. Licensed HVAC technicians and plumbers reach for this style of adapter when transitioning between flared copper tubing and NPT-threaded components in tight or service-critical installations.
This adapter is used in residential and light commercial systems where flare fittings interface with threaded pipe connections. Typical applications include refrigerant line sets, gas supply piping, and hydronic system connections. The 3/8-inch flare inlet accepts standard 3/8-inch flared tubing ends, while the 3/8-inch MIP outlet threads into female NPT fittings, valves, or manifolds. It is a common service fitting carried by HVAC and plumbing technicians for field repairs and new installations.
Designed as an OEM-style replacement or field-service fitting compatible with standard 3/8-inch flare and 3/8-inch NPT threaded connections in HVAC, refrigeration, and plumbing systems.
Installation should be performed by a licensed HVAC technician or plumber in accordance with applicable local codes, IFGC guidelines for gas applications, or IPC requirements for plumbing applications. Shut off all gas, refrigerant, or water supply before beginning work and verify the system is fully depressurized or depressurized before disconnecting or connecting fittings. Use an appropriate flare tool to ensure a proper seating surface on the tubing end before making the flare connection. Do not overtighten threaded connections; follow standard trade practice for NPT thread engagement.
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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