This 6.3580mm Tube Weld Socket End Feed Reducer Coupler is a pure copper pipe fitting connector designed for air conditioning and refrigeration piping. It provides a secure reduction from 35 mm to 22 mm with a welded socket end for reliable, leak resistant joints. Key benefits Simplifies installations by connecting a 35 mm OD tube to a 22 mm OD tube in a single fitting, reducing the number of joints and potential leak points Pure copper construction delivers thermal conductivity, good brazing performance, and durability in HVACR environments Weld socket end offers a strong, leak tight connection when brazed or welded, improving system reliability Corrosion resistant and compatible with standard copper tube sizes used in air conditioning and refrigeration Key attributes Material: Pure copper Fitting type: Tube reducer coupler with socket weld end Reduction: 35 mm to 22 mm End compatibility: 35 mm tube on the socket weld end, 22 mm tube on the other end Application: Air conditioning and refrigeration piping Model reference: 6.3580mm Tube Weld Socket End Feed Reducer Coupler, with 35 mm to 22 mm specification Technical considerations End connections are designed for socket weld brazing or welding on 35 mm tubing Suitable for typical HVACR piping configurations that use 35 mm and 22 mm copper tubes Use cases Connecting a 35 mm OD refrigerant line to a 22 mm OD branch in a residential air conditioning system Reconfiguring a refrigeration line in a commercial cooler to accommodate a smaller bore without multiple adapters Replacing a series of threaded fittings with a single weldable reducer in an HVACR installation to reduce potential leak points Installation guidance Use appropriate brazing or welding procedures for copper tubing Conduct purge and leak testing after installation Verify compatibility with refrigerant type and system pressure before use