Smartlock Flare Fittings & Copper Pipe Connectors

Keep installs fast, clean and reliable with Smartlock copper pipe connectors. Designed for HVAC/R engineers, these reusable fittings create a secure, leak-resistant seal without soldering or special tools. Ideal for service work and new installs across split, multi-split and VRF/VRV systems.

What’s in this range

• Flare Connector – Multi Angle (e.g. FCMA1400, FCMA3800, FCMA1200, FCMA5800, FCMA3400)
• Flare Connector – Reducer (e.g. FCRS1238)
• Union Straight (e.g. UNST1400, UNST3800, UNST1200, UNST5800, UNST3400, UNST7800)
• Union Reducer (e.g. UNRD3814, UNRD1238, UNRD5812, UNRD3458, UNRD7834)
• Swage Union (e.g. SWUN3800, SWUN5800, SWUN3400, SWUN7800)
• Elbow Swage Union (e.g. ELSW3800, ELSW5800, ELSW3400, ELSW7800)
• Elbow Union (e.g. ELUN1200, ELUN5800, ELUN3400, ELUN7800)

Key features

• Quick installation: no heat, flux or nitrogen purging required.
• Service-friendly: fittings can be disconnected and reused where appropriate.
• Durable build: precision-made to deliver a consistent, tight seal.
• Sizes: 1/4", 3/8", 1/2", 5/8", 3/4" and 7/8" options available.
• Applications: copper pipe connections on air conditioning and refrigeration linesets.

Choosing the right fitting

Use Union Straight for inline joins, Elbow variants where a bend is required, and Reducers when stepping between pipe sizes. The Multi Angle Flare Connectors help with awkward access and alignment during installation or maintenance.

Typical use cases

• Joining or extending copper linesets
• Repair work where brazing isn’t practical
• System modifications and component swaps

Good to know

• Match the fitting size to the outside diameter of the copper tube.
• Always deburr and prepare the tube ends for a clean, reliable seal.
• Torque to the manufacturer’s guidance for best results.

Shop the full Smartlock flare fittings range below and choose the size/type that matches your pipework. For bulk orders or technical help, contact our team.