{"product_id":"armstrong-106285mf-133-s-57-1-ab-bronze-centrifugal-pump-3-4-hp","title":"Armstrong 106285MF-133 S-57-1 AB Bronze Centrifugal Pump 3\/4 HP","description":"\u003cp\u003eThe S‑57‑1 AB bronze centrifugal pump provides steady, energy‑efficient water flow for hydronic heating and cooling loops. Engineered with a full‑bronze construction, the **106285MF-133** model delivers 3\/4 hp performance suited for residential and light‑commercial applications.\u003c\/p\u003e\u003cp\u003eThis single‑stage, vortex‑type pump moves fluid by converting rotational energy from the motor into kinetic energy through its impeller, then converting it to pressure via the volute housing, ensuring consistent pressure and flow across system demands.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Capacity:\u003c\/strong\u003e Approximately 20 gpm at 30 psi, meeting typical heating loop requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 0.75 hp motor draws ~650 W, supporting high efficiency operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Durability:\u003c\/strong\u003e All‑bronze impeller and housing resist corrosion and cavitation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Pressure:\u003c\/strong\u003e Rated for up to 150 psi, suitable for most residential pressure ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Level:\u003c\/strong\u003e Quiet operation under 55 dB(A), ideal for indoor installations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for boiler feedwater, radiators, baseboard heating, domestic hot water recirculation, and small commercial hydronic loops.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43118596587614,"sku":"106285MF-133","price":4816.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/106285MF_133_image_e9a77757-9a61-4c55-b4fe-bcd01c9bb6b7.png?v=1785977532","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-106285mf-133-s-57-1-ab-bronze-centrifugal-pump-3-4-hp","provider":"National Boiler Supply","version":"1.0","type":"link"}