{"product_id":"uponor-lf4525075-male-adapter-1-2-x-3-4-in-pex-x-mnpt-brass","title":"Uponor LF4525075 Male Adapter 1\/2 X 3\/4 in Pex X Mnpt Brass","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe UPONOR LF4525075 is a lead-free brass male adapter designed to transition between PEX tubing and male NPT threaded pipe connections. It accepts a 1\/2-inch PEX fitting connection on one end and terminates with a 3\/4-inch male NPT thread on the other, making it a cross-size transition fitting suited for potable water and hydronic plumbing systems. The lead-free brass construction meets drinking water compliance requirements. Licensed plumbers install this fitting in residential and light commercial applications wherever PEX distribution lines must connect to threaded metal components such as shutoff valves, manifold ports, or fixture supply stubs.\u003c\/p\u003e\n\u003cp\u003eThis adapter is used in PEX-based domestic water distribution systems, including cold and hot supply lines. The PEX end is compatible with Uponor ProPEX or applicable expansion-style connection systems depending on system design. The 3\/4-inch MNPT outlet allows direct threading into female-threaded valves, tees, or transition fittings. Typical install scenarios include connecting PEX branch lines to threaded valve bodies, water heater connections, or manifold outlets where a size step-up from 1\/2 inch to 3\/4 inch NPT is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLead-free brass construction meets federal and state drinking water regulations\u003c\/li\u003e\n  \u003cli\u003e1\/2-inch PEX inlet to 3\/4-inch MNPT outlet provides cross-size transition capability\u003c\/li\u003e\n  \u003cli\u003eBrass body offers corrosion resistance suitable for potable water and hydronic service\u003c\/li\u003e\n  \u003cli\u003eDomestically sourced fitting for projects requiring domestic-origin materials\u003c\/li\u003e\n  \u003cli\u003eMale NPT thread allows direct connection to standard female-threaded fittings and valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style transition fitting for PEX plumbing systems requiring a 1\/2-inch PEX to 3\/4-inch male NPT connection. Confirm PEX connection method compatibility with your specific Uponor system before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off the water supply and depressurize the line before making any connections. Apply an approved thread sealant or PTFE tape to the male NPT threads before threading into the female fitting — do not overtighten, as brass threads can be damaged by excessive torque. Verify that the PEX connection method used is appropriate for the specific Uponor fitting system installed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInlet Size\u003c\/strong\u003e: 1\/2 inch (PEX)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutlet Size\u003c\/strong\u003e: 3\/4 inch (MNPT)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: PEX x Male NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead-Free\u003c\/strong\u003e: Yes\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: LF4525075\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"UPONOR","offers":[{"title":"Default Title","offer_id":51524575658290,"sku":"LFADAPTPEXMIP1234","price":22.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/25340612cfda11cd24d2a2a2c50d687f.jpg?v=1785452144","url":"https:\/\/voomisupply.com\/products\/uponor-lf4525075-male-adapter-1-2-x-3-4-in-pex-x-mnpt-brass","provider":"Voomi Supply","version":"1.0","type":"link"}