{"product_id":"28mm-x-15mm-solder-ring-reducing-coupling","title":"28mm x 15mm Solder Ring Reducing Coupling","description":"\u003cul\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e A solder ring reducing coupling (also known as a or pre-soldered reducer) is a straight fitting used to connect two copper pipes of different diameters. Each socket features an internal groove pre-loaded with a precise amount of lead-free solder. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e To prepare copper pipe for solder ring fittings, cut it square, deburr the edges, clean the pipe end and fitting socket to bright metal with an abrasive pad, and apply a thin layer of flux before assembly. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e To solder a solder ring fitting, clean and flux the joint, assemble it, heat the copper evenly with a blowtorch until it reaches melting temperature, so capillary action draws the molten metal into the gap around the entire pipe. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cool Products International Limited","offers":[{"title":"Default Title","offer_id":55657579905400,"sku":"30076284","price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1563\/1217\/files\/Screenshot2026-09-10222248.png?v=1789075383","url":"https:\/\/www.coolproducts.org.uk\/products\/28mm-x-15mm-solder-ring-reducing-coupling","provider":"Cool Products International Limited","version":"1.0","type":"link"}