{"product_id":"mueller-streamline-cored42-copper-reducing-coupling","title":"Mueller Streamline CORED42 Copper Reducing Coupling","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MUELLER STREAMLINE CORED42 is a copper reducing coupling designed to join two sections of copper pipe with differing diameters in a sweat-solder connection. It transitions from a 4-inch socket on one end to a 2-inch socket on the other, using a standard cup-by-cup (C x C) configuration. This fitting is installed in copper water supply, hydronic heating, and plumbing distribution systems where a permanent, pressure-rated reduction in pipe size is required. Licensed plumbers and pipefitters install this coupling as part of new construction and retrofit work.\u003c\/p\u003e\u003cp\u003eThis reducing coupling is suited for residential and commercial plumbing applications where copper pipe runs need to step down in diameter. Typical scenarios include main supply trunk reductions, branch connections, and hydronic loop distribution. The C x C end configuration requires both pipe ends to be cleaned, fluxed, and soldered per standard practice, making this a permanent mechanical joint appropriate for in-wall, in-ceiling, or mechanical room installations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTransitions from 4-inch to 2-inch nominal copper pipe diameter\u003c\/li\u003e\n\u003cli\u003eCup-by-cup (C x C) end configuration for sweat-solder installation\u003c\/li\u003e\n\u003cli\u003eCopper construction for corrosion resistance in potable water and hydronic systems\u003c\/li\u003e\n\u003cli\u003eCompatible with standard copper tubing sizes per ASTM specifications\u003c\/li\u003e\n\u003cli\u003eSuitable for permanent, pressure-rated plumbing joints\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and new-installation fitting for copper piping systems using 4-inch and 2-inch nominal diameter copper tube joined by sweat-solder methods.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off and depressurize the water supply and drain the affected line before cutting or soldering. Both pipe ends must be cut square, deburred, cleaned with emery cloth, and coated with appropriate flux before applying heat and solder. Do not use open-flame torches near combustible framing without a heat shield in place.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Size\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connection Type\u003c\/strong\u003e: C x C (Cup by Cup, sweat-solder)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Copper\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MUELLER STREAMLINE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: CORED42\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MUELLER STREAMLINE","offers":[{"title":"Default Title","offer_id":51525046763826,"sku":"CORED42","price":114.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2861748bfa8ae07cc2b85a3694335df7_a2ea685c-7091-4aec-9b4d-6b5e8c182f7b.jpg?v=1785463201","url":"https:\/\/voomisupply.com\/products\/mueller-streamline-cored42-copper-reducing-coupling","provider":"Voomi Supply","version":"1.0","type":"link"}