{"product_id":"ay-mcdonald-4423-393-pex-a-poly-insert-tee-3-4x1-2x1-2","title":"Ay Mcdonald 4423-393 Pex-a Poly Insert Tee 3\/4x1\/2x1\/2","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe AY MCDONALD 4423-393 is a PEX-A poly insert tee fitting designed for use in PEX-A tubing systems. This three-port fitting connects a 0.75-inch run to two 0.5-inch branch or continuation lines, making it a go-to component for branching water distribution runs. Constructed from polymer material, the insert-style design seats inside the PEX-A tubing and is secured with crimp rings or clamp rings depending on the installer's tooling preference. Plumbers and pipefitters install this fitting during rough-in and retrofit work on potable water and hydronic heating systems.\u003c\/p\u003e\n\u003cp\u003eThis fitting is suited for residential and light commercial plumbing applications where PEX-A tubing is the distribution medium. Typical install scenarios include home-run manifold systems, trunk-and-branch layouts, and radiant heating loops where a 0.75-inch supply line needs to reduce and split to 0.5-inch branch lines. Its all-polymer construction makes it appropriate for use where metal fittings are undesirable due to corrosion concerns or local water chemistry.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTee configuration: 0.75 inches x 0.5 inches x 0.5 inches for branching reduced lines\u003c\/li\u003e\n  \u003cli\u003eCompatible with PEX-A tubing systems using insert-style connection method\u003c\/li\u003e\n  \u003cli\u003ePolymer construction resists corrosion and scale buildup\u003c\/li\u003e\n  \u003cli\u003eInsert design works with standard crimp ring or clamp ring installation tools\u003c\/li\u003e\n  \u003cli\u003eOrder increment of 1 for single-unit purchasing flexibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style insert fitting for PEX-A tubing systems requiring a reducing tee transition from 0.75-inch to 0.5-inch lines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers following applicable IPC and local plumbing code requirements. Shut off the water supply and depressurize the line before cutting into any existing PEX run. Use a properly calibrated PEX crimp or clamp tool to secure the appropriate rings over the tubing once the insert is fully seated. Do not use this fitting with PEX-B or PEX-C tubing without verifying compatibility with the fitting manufacturer.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size\u003c\/strong\u003e: 0.75 inches x 0.5 inches x 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: PEX-A Insert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Configuration\u003c\/strong\u003e: Tee\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Polymer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 811734022738\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: 4423-393\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AY MCDONALD","offers":[{"title":"Default Title","offer_id":51396426137906,"sku":"4423-393","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312834279.jpg?v=1782831646","url":"https:\/\/voomisupply.com\/products\/ay-mcdonald-4423-393-pex-a-poly-insert-tee-3-4x1-2x1-2","provider":"Voomi Supply","version":"1.0","type":"link"}