{"product_id":"midland-industries-18158-brass-compression-adapter","title":"Midland Industries 18158 Brass Compression Adapter","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MIDLAND INDUSTRIES 18158 is a brass compression-to-female NPT adapter designed to connect 1\/2 inch compression tubing to a 3\/8 inch female NPTF threaded fitting. Machined from brass, it provides a reliable, pressure-rated transition between compression and threaded piping systems. The fitting is rated to 200 psi and handles temperatures from -65 degrees F to 250 degrees F, making it suitable for a wide range of plumbing and fluid-handling applications. The hex measurement is 0.81 inches, and the center-to-end dimension is 1.12 inches. Thread specifications are 11\/16-20 on the compression side and 3\/8-18 on the FNPTF side. Licensed plumbers and pipefitters typically install this type of fitting.\u003c\/p\u003e\u003cp\u003eThis adapter is suited for residential and light commercial plumbing systems where a compression tubing run must terminate into a female NPT threaded port. It is approved for use with copper, aluminum, and thermoplastic tubing, making it a versatile choice in water supply lines, refrigeration service, and instrumentation plumbing. The compact body fits in tight spaces and the standard hex profile allows installation with common hand tools.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/2 inch compression inlet transitions to 3\/8 inch FNPTF threaded outlet\u003c\/li\u003e\n\u003cli\u003eRated to 200 psi working pressure\u003c\/li\u003e\n\u003cli\u003eTemperature range: -65 degrees F to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eCompatible with copper, aluminum, and thermoplastic tubing\u003c\/li\u003e\n\u003cli\u003eBrass construction resists corrosion in wet plumbing environments\u003c\/li\u003e\n\u003cli\u003eCompact 1.12 inch center-to-end length fits confined installation areas\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with copper, aluminum, and thermoplastic tubing in compression fitting applications requiring a female NPT threaded connection.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or qualified trade technician. Shut off the water supply and relieve system pressure before removing or installing any compression fitting. Use an appropriately sized open-end or adjustable wrench on the 0.81 inch hex to seat the fitting without over-tightening, which can deform compression ferrules or damage threaded ports. Follow applicable IPC and local plumbing code requirements for fitting type and pressure rating in the intended service.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Size 1\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type 1\u003c\/strong\u003e: Compression\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Size 2\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type 2\u003c\/strong\u003e: FNPTF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Specification\u003c\/strong\u003e: 11\/16-20 x 3\/8-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 0.81 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to End\u003c\/strong\u003e: 1.12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 200 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range\u003c\/strong\u003e: -65 degrees F to 250 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Tubing\u003c\/strong\u003e: Copper, Aluminum, Thermoplastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.120 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MIDLAND INDUSTRIES\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 18158\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MIDLAND INDUSTRIES","offers":[{"title":"Default Title","offer_id":67951348875570,"sku":"18158","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/57fbbd53ffbbd34fcdd3173c1cabc0b3.jpg?v=1791724895","url":"https:\/\/voomisupply.com\/products\/midland-industries-18158-brass-compression-adapter","provider":"Voomi Supply","version":"1.0","type":"link"}