{"product_id":"armstrong-110223-308-250ss-3-speed-circulating-pump","title":"Armstrong 110223-308 250SS 3-Speed Circulating Pump","description":"\u003cp\u003eDesigned for residential and light‑commercial hydronic heating systems, this pump provides reliable circulation of water through boilers, radiators, and baseboard units. The **110223-308** model **250SS** delivers three selectable speeds for optimal flow matching.\u003c\/p\u003e\u003cp\u003eThe pump utilizes a permanent‑magnet motor paired with a stainless‑steel impeller and an integrated three‑stage controller, offering quiet operation, consistent pressure, and easy speed adjustment.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Capacity:\u003c\/strong\u003e Supports heating loads up to 250 kBTU with balanced water distribution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Head:\u003c\/strong\u003e Maintains system pressure up to 20 ft of water column.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficiency:\u003c\/strong\u003e Three‑speed control can reduce electricity use by up to 30 % at low speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature Range:\u003c\/strong\u003e Certified for continuous operation from 40 °F to 140 °F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Stainless‑steel construction resists corrosion in aggressive water environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Residential boiler loops, small commercial hot‑water heating, solar thermal pre‑heat circuits, domestic hot‑water recirculation.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43123860242526,"sku":"110223-308","price":461.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/110223_308_image_5b1edf7c-8d7b-4d1f-ab2e-3a4f84824c51.png?v=1786020407","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-110223-308-250ss-3-speed-circulating-pump","provider":"National Boiler Supply","version":"1.0","type":"link"}