{"product_id":"armstrong-110223-322-astro-280ci-cast-iron-circulating-pump","title":"Armstrong 110223-322 Astro 280CI Cast Iron Circulating Pump","description":"\u003cp\u003eThe Armstrong Astro 280CI cast‑iron circulating pump ensures consistent water flow throughout residential or light‑commercial hydronic heating systems. Engineered for 230 V service, the **110223-322** model delivers dependable performance and extended service life.\u003c\/p\u003e\u003cp\u003eUtilizing a robust cast‑iron housing and a precision‑balanced impeller, the pump moves water smoothly while resisting corrosion and wear. The sealed bearing design reduces maintenance, and the integrated motor delivers reliable torque across a wide range of system pressures.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Capacity:\u003c\/strong\u003e Up to 21 gpm at 30 psi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficiency:\u003c\/strong\u003e Optimized motor design minimizes electricity use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Cast‑iron construction provides long‑term corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Compatibility:\u003c\/strong\u003e Designed for stable 230 V operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for residential boiler circulation, small‑scale commercial heating loops, domestic hot‑water recirculation, and retrofit upgrades of existing cast‑iron pump systems.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43123881410654,"sku":"110223-322","price":679.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/110223_322_image_e45f900d-2fe5-4a96-a9d3-3bafe5254816.png?v=1786020947","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-110223-322-astro-280ci-cast-iron-circulating-pump","provider":"National Boiler Supply","version":"1.0","type":"link"}