This 25mm X16mm Inner Diameter Copper End Feed Straight Reducing Coupling Plumbing Fitting Socket Weld Water Gas Oil is a copper end feed straight reducing coupling designed to join copper pipes of different inner diameters in a single, compact socket weld connection. The fitting reduces from 25mm to 16mm inner diameter, enabling a streamlined transition in plumbing and fluid handling systems. Made from copper, it offers reliable performance, corrosion resistance, and long service life in water, gas, and oil installations. The socket weld configuration ensures a strong, leak resistant joint suitable for integrity piping. Key benefits Reduces 25mm pipe to 16mm in a single straight coupling, simplifying layouts and reducing the number of fittings Copper construction provides corrosion resistance and good thermal conductivity, enhancing longevity in varied environments Socket weld joints deliver strong, leak resistant connections with clean welds End feed design allows straightforward installation in compatible copper piping systems Suitable for water, gas, and oil applications as indicated by the product name Key attributes Material: Copper Type: End Feed Straight Reducing Coupling Connection: Socket Weld Inner Diameter (larger end): 25mm Inner Diameter (smaller end): 16mm Applications: Water Gas Oil Compatibility: Copper piping systems Performance: Durable, corrosion resistant, weldable Use cases Residential water supply: connect a 25mm main to a 16mm branch in a straight run Small scale gas line adaptation: integrate a 25mm feed to 16mm line in a safe, compact layout Industrial oil line: connect 25mm feed to 16mm branch within a machinery or process piping system Installation tips Ensure pipe ends are clean and deburred before welding Use appropriate welding procedure for socket weld copper fittings and inspect joints after cooling for leaks Perform a pressure test in accordance with local codes after installation