{"product_id":"ay-mcdonald-4423-376-pex-a-poly-insert-coupling","title":"Ay Mcdonald 4423-376 Pex-a Poly Insert Coupling","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe AY MCDONALD 4423-376 is a reducing poly insert coupling designed to join PEX-A tubing in plumbing and hydronic piping systems. It transitions from 3\/4 inches to 1\/2 inches, making it a practical fitting for branch runs, fixture supply lines, and other applications where tube diameter steps down. The insert-style design is compatible with PEX-A expansion installation methods, and the polyethylene construction resists corrosion and scale buildup. Licensed plumbers and pipefitters typically install this fitting during new construction and remodel work on potable water and radiant heat systems.\u003c\/p\u003e\n\u003cp\u003eThis coupling is suited for residential and light commercial plumbing installations where PEX-A tubing is the specified pipe material. It is commonly used at distribution manifold branch connections, fixture rough-ins, and inline reductions in hot and cold water supply piping. The 3\/4 inches to 1\/2 inches size reduction is one of the most common transitions in residential plumbing layouts.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces from 3\/4 inches to 1\/2 inches for common branch and fixture supply transitions\u003c\/li\u003e\n  \u003cli\u003ePEX-A compatible insert design for use with expansion-style installation tools\u003c\/li\u003e\n  \u003cli\u003ePoly construction resists corrosion, scale, and chemical degradation\u003c\/li\u003e\n  \u003cli\u003eSingle-unit order increment allows precise procurement without minimum quantity requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style insert coupling for use with 3\/4 inches and 1\/2 inches PEX-A tubing in potable water and hydronic plumbing systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a licensed plumber using a PEX-A expansion tool and appropriate expansion rings sized for 3\/4 inches and 1\/2 inches tubing. Shut off the water supply and relieve system pressure before cutting into any existing line. Follow local plumbing codes and IPC guidelines for PEX fitting installation, including required support intervals and minimum bend radii. Do not use this fitting with PEX-B or PEX-C tubing, as the insert expansion method is specific to PEX-A.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInlet Size\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutlet Size\u003c\/strong\u003e: 1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: PEX-A Poly Insert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 811734022585\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: AY MCDONALD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4423-376\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AY MCDONALD","offers":[{"title":"Default Title","offer_id":51396396155186,"sku":"4423-376","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312834273.jpg?v=1782831143","url":"https:\/\/voomisupply.com\/products\/ay-mcdonald-4423-376-pex-a-poly-insert-coupling","provider":"Voomi Supply","version":"1.0","type":"link"}