The 42mm × 35mm End Feed Reducing Coupler is an external reducer that joins 42mm copper tube to 35mm copper tube in a straight run with a soldered capillary joint. Socket both ends, it fits over the outside of the tube — a single-step reduction between commercial pipe sizes. Manufactured from copper to BS EN 1254-1 and fits copper tube to BS EN 1057.

Also known as: external reducer, external coupler, external reducing coupler, reducing coupling, reducing socket, copper reducer, pipe size reducer, 42-35mm coupler, capillary reducing coupler, endfeed reducing coupler.

• Manufactured to BS EN 1254-1 for capillary (solder) fittings
• Reduces 42mm to 35mm — external, socket both ends
• 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, fitting reducers and the full end feed range. Ordering for a whole job? Use the bulk fittings matrix.