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The Flare Adapter Fittings category focuses on the transition fittings that connect flare joints to other connection styles in HVAC and refrigeration systems. Flare connections are standard on mini-splits, service valves and many heat pump and condensing units, and the right adapter lets you tie those flare ports into copper, brass or threaded piping without compromising reliability or serviceability.
Here you’ll find flare x flare couplings, flare x sweat adapters, flare x NPT adapters, flare caps, flare unions, reducing flare fittings and specialty flare adapters for mini-split and refrigeration work. Sizes are matched to common HVAC applications, including 1/4", 3/8", 1/2", 5/8" and 3/4" flare connections used on liquid and suction lines. Many fittings are designed for modern high-pressure refrigerants and support clean, repeatable torque settings when installed with calibrated torque wrenches.
When selecting flare adapter fittings, confirm the flare size (SAE), mating thread type (NPT vs straight), refrigerant type, pressure rating and material compatibility. Always use new flare nuts and properly prepared tubing ends—flare faces must be smooth, clean and free of cracks. For mini-split installations, follow the manufacturer’s torque specs to avoid under-tightening (leaks) or over-tightening (cracked flares or distorted seats).
Pro tip: Keep a dedicated flare adapter kit on the truck with flare x sweat, flare x flare and flare x NPT options in the main HVAC sizes. This lets you correct damaged factory flares, adapt to existing field piping and connect temporary gauges without improvising fittings that can leak under refrigerant pressure.
Flare adapter fittings connect HVAC flare connections to sweat, threaded and other piping styles. Options include flare x flare unions, flare x sweat adapters, flare x NPT adapters, reducing flare fittings and flare caps in sizes from 1/4 to 3/4 inch.
There are no products listed under this category.