The 42mm × 15mm End Feed Fitting Reducer is an internal reducer with a 42mm spigot end that pushes inside a 42mm fitting, and a 15mm socket that takes 15mm copper tube. It lets you run 15mm tube into a fitting sized for 42mm — a large single-fitting step-down on commercial pipework. Joined with a soldered capillary joint and suitable for hot and cold water and central heating. Manufactured from copper to BS EN 1254-1 and fits copper tube to BS EN 1057.

Also known as: internal reducer, fitting reducer, male reducer, reducing bush, reducer bush, spigot reducer, 42-15mm reducer, endfeed fitting reducer.

• Manufactured to BS EN 1254-1 for capillary (solder) fittings
• Reduces a 42mm fitting to 15mm tube — internal, spigot one end, socket the other
• Fits copper tube to BS EN 1057
• WRAS approved
• Solder and flux required — not supplied
• Sold individually — buy exactly what the job needs
• Suitable for hot and cold water and heating services

End feed means a capillary joint: clean the tube and fitting, apply flux, heat evenly and feed lead-free solder to the mouth of the fitting until a ring forms. See our guide: How to solder end feed fittings.

Also in this range: straight couplers, reducing couplers and the full end feed range. Ordering for a whole job? Use the bulk fittings matrix.