{"product_id":"sigma-818907057-hex-head-pipe-bushing-1-1-4-x-3-4-in-150-lb","title":"Sigma 818907057 Hex Head Pipe Bushing 1-1\/4 X 3\/4 in 150 Lb","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIGMA 818907057 is a FIG 3383 standard hex head pipe bushing designed to reduce pipe thread connections from a larger male thread to a smaller female thread. Constructed from malleable iron with a black oxide finish, this bushing handles the mechanical stress of threaded pipe systems while resisting corrosion in typical service environments. It carries a 150 lb pressure rating and connects via a male NPT outer thread and a female NPT inner thread, making it a reliable fitting for reducing pipe size at a threaded joint. Licensed plumbers and pipefitters install this fitting in pressurized pipe systems where a durable, code-appropriate reducer is required.\u003c\/p\u003e\n\u003cp\u003eThis bushing is sized at 1-1\/4 x 3\/4 inch nominal, with the larger MNPT end threading into a female-threaded port or fitting and the smaller FNPT end accepting the next downstream pipe or fitting. It is suited for use in residential and light commercial piping applications including water distribution, gas piping, and general mechanical systems where malleable iron fittings are specified. The hex head profile allows a wrench to seat and tighten the bushing securely without damaging adjacent components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-1\/4 inch MNPT outer thread reduces to 3\/4 inch FNPT inner thread\u003c\/li\u003e\n  \u003cli\u003e150 lb pressure-rated malleable iron construction\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides baseline corrosion resistance in typical service conditions\u003c\/li\u003e\n  \u003cli\u003eHex head design allows standard wrench engagement for controlled tightening\u003c\/li\u003e\n  \u003cli\u003eFIG 3383 standard profile for consistent dimensional compatibility with threaded pipe fittings\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 1-1\/4 inch to 3\/4 inch NPT threaded pipe systems using malleable iron fittings rated at 150 lb.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers or pipefitters following applicable IPC or IFGC requirements depending on the service fluid. Shut off system pressure and drain the line before threading or unthreading any fittings. Apply an appropriate thread sealant or PTFE tape to the MNPT threads before installation and tighten to a snug, leak-free fit using a pipe wrench on the hex head. Do not overtighten malleable iron fittings, as the material is strong but not as ductile as steel under excessive torque.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFigure Number\u003c\/strong\u003e: FIG 3383\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 1-1\/4 x 3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Style\u003c\/strong\u003e: MNPT x FNPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 150 lb\u003c\/li\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 Oxide\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: SIGMA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 818907057\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":51524524933426,"sku":"BLBUSH11434I-LF","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/89b042a6433f59f3a7393de72ad9a709_99733e9d-d158-4dc1-9722-57dd62c51647.jpg?v=1785450798","url":"https:\/\/voomisupply.com\/products\/sigma-818907057-hex-head-pipe-bushing-1-1-4-x-3-4-in-150-lb","provider":"Voomi Supply","version":"1.0","type":"link"}