{"product_id":"armstrong-816011-721k-1-1-4-bronze-flange-set","title":"Armstrong 816011-721K 1-1\/4\" Bronze Flange Set","description":"\u003cp\u003eFacilitate reliable and durable piping connections in your hydronic heating or cooling system with the \u003cstrong\u003eArmstrong 816011-721K\u003c\/strong\u003e bronze flange set. Designed for seamless integration with compatible Armstrong circulators, this \u003cstrong\u003e816011-721K\u003c\/strong\u003e flange set provides the essential mechanical interface required for secure, high-pressure piping applications.\u003c\/p\u003e\u003cp\u003eThese flanges are engineered to ensure a tight, reliable seal between the pump volute and the system piping. Constructed from high-quality bronze, they offer superior corrosion resistance, making them ideal for systems where fluid chemistry requires durable, non-ferrous materials to prevent system degradation and ensure long-term hydraulic integrity.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Composition:\u003c\/strong\u003e High-grade bronze for enhanced corrosion resistance and long service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Interface:\u003c\/strong\u003e Precision-machined 1-1\/4\" NPT connections for standard hydronic piping alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Compatibility:\u003c\/strong\u003e Engineered for direct integration with Armstrong pumps requiring specific flange spacing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Integrity:\u003c\/strong\u003e Designed to maintain structural stability under thermal expansion and fluctuating system pressures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Primarily utilized in closed-loop hydronic heating systems, residential circulator pump installations, and potable water systems where brass or bronze components are required for code compliance and corrosion mitigation.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43133725966430,"sku":"816011-721K","price":84.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/816011_721K_image_7aded343-6a84-4779-8c35-38830bc8e438.png?v=1786108692","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-816011-721k-1-1-4-bronze-flange-set","provider":"National Boiler Supply","version":"1.0","type":"link"}