The 54mm × 42mm End Feed Fitting Reducer is an internal reducer with a 54mm spigot end that pushes inside a 54mm fitting, and a 42mm socket that takes 42mm copper tube. It lets you run 42mm tube into a fitting sized for 54mm — a single-step reduction between the two largest sizes in the range. 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, 54-42mm reducer, endfeed fitting reducer.

• Manufactured to BS EN 1254-1 for capillary (solder) fittings
• Reduces a 54mm fitting to 42mm 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.