{"product_id":"uponor-q4771313-propex-coupling-1-1-4-inch","title":"Uponor Q4771313 Propex Coupling 1-1\/4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe UPONOR Q4771313 is a ProPEX-style coupling fitting designed to join PEX tubing in potable water, hydronic, and plumbing distribution systems. Constructed from modified polyphenylsulfone (MPPSU), this coupling offers strong resistance to high temperatures and aggressive water conditions. It is sized for 1-1\/4 inch nominal tubing and uses the ProPEX expansion end style, which requires a compatible PEX expansion tool to swage the fitting ring before insertion. Licensed plumbers and hydronic system installers are the primary tradespeople who work with this fitting in both new construction and retrofit applications.\u003c\/p\u003e\n\u003cp\u003eThis coupling is suited for residential and light commercial plumbing and radiant heating installations where PEX tubing must be joined or extended. The ProPEX end style creates a mechanically secure, leak-resistant connection as the expanded ring contracts around the fitting body. It is domestically manufactured, making it a common specification choice on projects that require domestic-origin materials compliance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-1\/4 inch nominal size for standard PEX tubing connections\u003c\/li\u003e\n  \u003cli\u003eProPEX expansion end style for a reliable, tool-driven mechanical connection\u003c\/li\u003e\n  \u003cli\u003eModified polyphenylsulfone construction for high-temperature and chemical resistance\u003c\/li\u003e\n  \u003cli\u003eDomestically manufactured for projects requiring domestic-origin compliance\u003c\/li\u003e\n  \u003cli\u003eStraight coupling configuration for in-line tubing joins or repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style ProPEX fitting for use with 1-1\/4 inch PEX tubing systems requiring an expansion-style coupling connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a calibrated ProPEX expansion tool sized for 1-1\/4 inch fittings. Shut off and depressurize the water supply before cutting into any existing line. Follow applicable plumbing codes, including IPC and local amendments, for fitting selection and pressure ratings. Allow the expanded PEX ring to fully contract onto 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\u003eNominal Size\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Style\u003c\/strong\u003e: ProPEX Expansion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Modified Polyphenylsulfone (MPPSU)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin\u003c\/strong\u003e: Domestic\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: UPONOR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: Q4771313\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"UPONOR","offers":[{"title":"Default Title","offer_id":51525226758450,"sku":"PLCOUP114","price":15.78,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/97355d283628dd92a10fe31012cf679f_2c27ed01-91f8-4763-bddd-af7c6f557632.jpg?v=1785467818","url":"https:\/\/voomisupply.com\/products\/uponor-q4771313-propex-coupling-1-1-4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}