{"product_id":"sioux-chief-641wp443-pex-a-poly-tee-f1960-1x1x3-4","title":"Sioux Chief 641WP443 Pex-a Poly Tee F1960 1x1x3\/4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIOUX CHIEF 641WP443 is a polypropylene push-fit tee fitting designed to the ASTM F1960 standard for use with PEX-A tubing systems. This cold-expansion fitting creates a secure, leak-resistant connection by expanding the PEX-A pipe end and allowing it to compress over the fitting body as it returns to its original diameter. The 641WP443 features a 1 inch by 1 inch by 3\/4 inch reducing configuration, making it well-suited for branch line transitions within residential and light commercial plumbing systems. Licensed plumbers and mechanical contractors are the primary installers of F1960 expansion fittings.\u003c\/p\u003e\n\u003cp\u003eThis tee is used in PEX-A potable water distribution systems where a main run of 1 inch tubing requires a reduced 3\/4 inch branch takeoff. Typical applications include residential trunk-and-branch or home-run plumbing layouts, radiant heating supply and return manifold connections, and light commercial domestic water piping. The F1960 cold-expansion connection method is widely favored for its reliability and the absence of solder, flame, or chemical adhesive during installation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets ASTM F1960 standard for cold-expansion PEX-A fittings\u003c\/li\u003e\n  \u003cli\u003e1 inch x 1 inch x 3\/4 inch reducing tee configuration for branch line transitions\u003c\/li\u003e\n  \u003cli\u003ePolypropylene body construction — no lead, no dezincification concerns\u003c\/li\u003e\n  \u003cli\u003eCompatible exclusively with PEX-A tubing expanded using an F1960 expansion tool\u003c\/li\u003e\n  \u003cli\u003eNo solder, flame, crimp rings, or clamps required for installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and new-construction fitting for PEX-A tubing plumbing systems installed to the ASTM F1960 cold-expansion standard.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a proper F1960 PEX-A expansion tool sized for each port diameter — do not attempt to use this fitting with PEX-B or PEX-C tubing, as those systems use different connection methods. Shut off the water supply and depressurize the line before making any connections. Work is typically performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and local amendments. Allow the expanded pipe end adequate time to recover around the fitting body before pressurizing the system.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Standard\u003c\/strong\u003e: ASTM F1960 PEX-A Cold Expansion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Tee\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInlet Size\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRun Size\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBranch Size\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Polypropylene\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 739236423825\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: SIOUX CHIEF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 641WP443\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIOUX CHIEF","offers":[{"title":"Default Title","offer_id":51383249273138,"sku":"641WP443","price":25.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312673379.png?v=1782591020","url":"https:\/\/voomisupply.com\/products\/sioux-chief-641wp443-pex-a-poly-tee-f1960-1x1x3-4","provider":"Voomi Supply","version":"1.0","type":"link"}