Copper pipe fittings are essential components used to connect, extend, or change the direction of copper piping in plumbing and HVAC systems. Common types include elbows, which redirect flow; tees, which split or combine flow paths; and couplings, used to join two straight pipe sections. Reducers help connect pipes of different diameters, while caps and plugs are used to close pipe ends. Adapters convert between threaded and soldered connections, and unions allow for easy disassembly of the system. Copper fittings are available in sweat (soldered), press-fit, and push-fit styles, offering flexibility for installation. Their excellent corrosion resistance, heat tolerance, and antimicrobial properties make them ideal for potable water, gas lines, and heating systems.