{"product_id":"armstrong-182202-651-e11-2-cast-iron-circulator-pump","title":"Armstrong 182202-651 E11.2 Cast Iron Circulator Pump","description":"\u003cp\u003eMaintain optimal flow and heat distribution in your hydronic system with the reliable **182202-651** Armstrong **E11.2** cast iron circulator pump. Engineered for durability, this pump ensures consistent water circulation, preventing dead spots in residential and light commercial heating loops.\u003c\/p\u003e\u003cp\u003eThis circulator utilizes a centrifugal impeller design to overcome system head pressure, allowing for efficient energy transfer across radiators, baseboards, and radiant tubing. The rugged cast iron volute provides excellent resistance against system debris and thermal expansion stress, supporting long-term operational integrity.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficiency:\u003c\/strong\u003e Optimized motor design minimizes power consumption during peak heating demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid Compatibility:\u003c\/strong\u003e Robust cast iron construction supports closed-loop water heating systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperational Reliability:\u003c\/strong\u003e Precision-engineered components ensure quiet performance and reduced maintenance cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Primarily used in residential forced-hot-water heating systems, hydronic radiant floor heating setups, and secondary loop zoning applications where reliable flow is essential.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43127340793950,"sku":"182202-651","price":778.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/182202_651_image_e6bf3555-1c44-4368-bde5-497195712f5f.png?v=1786050843","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-182202-651-e11-2-cast-iron-circulator-pump","provider":"National Boiler Supply","version":"1.0","type":"link"}