{"product_id":"bk-mueller-521-386hn-black-reducing-coupling-2x1-25in","title":"Bk Mueller 521-386HN Black Reducing Coupling 2x1.25in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BK MUELLER 521-386HN is a black malleable iron reducing coupling rated for Class 150 service. It steps down from a 2-inch female iron pipe (FIP) thread to a 1.25-inch FIP thread, making it a standard fitting for reducing pipe diameter in threaded piping systems. Constructed from malleable iron with a black finish, it carries a pressure rating of 300 psi, suitable for use with both liquid and gas media. Licensed plumbers and pipefitters install this fitting in commercial and residential piping assemblies where a threaded diameter reduction is required without the use of a bushing.\u003c\/p\u003e\n\u003cp\u003eThis reducing coupling is used in threaded black iron pipe systems for gas distribution, steam, air, and water applications. The Class 150 rating and 300 psi pressure capacity make it appropriate for low-pressure gas lines and general-purpose plumbing and mechanical piping runs. It is commonly found in commercial mechanical rooms, residential gas supply lines, and industrial compressed-air distribution systems where a reliable, permanent threaded reduction is needed.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMalleable iron construction provides durability and resistance to impact in mechanical piping environments\u003c\/li\u003e\n  \u003cli\u003eBlack finish is standard for gas and steam piping applications\u003c\/li\u003e\n  \u003cli\u003eClass 150 rating with a 300 psi liquid and gas pressure capacity\u003c\/li\u003e\n  \u003cli\u003eFemale iron pipe (FIP) threads on both ends for fully threaded installations\u003c\/li\u003e\n  \u003cli\u003eReduces from 2 inches to 1.25 inches in a single inline fitting\u003c\/li\u003e\n  \u003cli\u003eSold individually  -  package quantity of 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation fitting for Class 150 threaded malleable iron piping systems using standard FIP connections.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IPC or IFGC. Shut off and depressurize the line completely before removing or installing any threaded fittings. Apply an appropriate pipe thread sealant or PTFE tape to all male threads before assembly. Do not over-torque threaded malleable iron fittings, as cracking can occur.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Malleable Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification\u003c\/strong\u003e: Class 150\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Reducing Coupling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Size\u003c\/strong\u003e: 2 x 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Connections\u003c\/strong\u003e: Threaded (FIP x FIP)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: FIP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 300 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.4 pounds\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: BK MUELLER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 521-386HN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B\u0026K MUELLER","offers":[{"title":"Default Title","offer_id":67905962606898,"sku":"521-386HN","price":27.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e9eea847b53dde2e02e28fdb9d995214.jpg?v=1791161098","url":"https:\/\/voomisupply.com\/products\/bk-mueller-521-386hn-black-reducing-coupling-2x1-25in","provider":"Voomi Supply","version":"1.0","type":"link"}