{"product_id":"sigma-819902529-square-head-plug-1-1-2-in-malleable-iron","title":"Sigma 819902529 Square Head Plug 1-1\/2 in Malleable Iron","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIGMA 819902529 is a cored square head plug used to close off pipe ends in threaded piping systems. Manufactured from malleable iron with a galvanized finish, it provides corrosion resistance in typical plumbing, HVAC, and light industrial piping applications. The square head profile allows for positive wrench engagement during installation and removal. At 1-1\/2 inches nominal size, it fits standard NPT-threaded pipe fittings of the same size. This fitting is installed by licensed plumbers and pipefitters working on threaded black or galvanized iron pipe systems.\u003c\/p\u003e\n\u003cp\u003eThis plug is suited for residential and commercial piping installations where a threaded pipe end must be capped or temporarily sealed. Common applications include closing unused branch outlets on gas, water, or steam distribution piping. The galvanized coating makes it appropriate for exposed or mildly humid environments where bare iron would be susceptible to surface corrosion. It is typically used in conjunction with other malleable iron fittings in standard threaded pipe assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-1\/2 inch nominal size for compatibility with standard NPT-threaded pipe systems\u003c\/li\u003e\n  \u003cli\u003eMalleable iron construction provides durability and resistance to impact in threaded assemblies\u003c\/li\u003e\n  \u003cli\u003eGalvanized finish offers corrosion protection in plumbing and mechanical piping applications\u003c\/li\u003e\n  \u003cli\u003eSquare head design allows secure wrench engagement for proper installation torque\u003c\/li\u003e\n  \u003cli\u003eCored design consistent with standard malleable iron pipe fitting manufacturing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style fitting for use with standard 1-1\/2 inch NPT-threaded malleable iron pipe systems in plumbing, HVAC, and light industrial applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a licensed plumber or pipefitter using a pipe wrench or adjustable wrench. Apply appropriate thread sealant or PTFE tape to the male threads before installation, following local plumbing code requirements such as the IPC or IFGC. Always depressurize and drain the pipe system before removing or installing any threaded plug. Do not over-tighten, as malleable iron threads can be damaged by excessive force.\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\/2 inches\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: Galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Square Head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: NPT\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: 819902529\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":51525415665970,"sku":"GALPL112I-LF","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b7fa60f85911efd2327b7d52f8ddca0b_4eaa4c2d-aaa7-4082-9c8a-e72bcb7af3cc.jpg?v=1785473112","url":"https:\/\/voomisupply.com\/products\/sigma-819902529-square-head-plug-1-1-2-in-malleable-iron","provider":"Voomi Supply","version":"1.0","type":"link"}