{"product_id":"armstrong-116431mf-132-h-51-cast-iron-bronze-fitted-circulator-pump","title":"Armstrong 116431MF-132 H-51 Cast Iron Bronze Fitted Circulator Pump","description":"\u003cp\u003eMaintain optimal flow and thermal efficiency in your hydronic heating or cooling system with the reliable Armstrong H-51 series. Designed for durability and quiet operation, this \u003cstrong\u003e116431MF-132\u003c\/strong\u003e model features a bronze-fitted construction to resist corrosion in demanding residential and light commercial applications. As a robust 1\/4 HP unit, the \u003cstrong\u003eH-51\u003c\/strong\u003e serves as a direct replacement solution for systems requiring precise hydraulic performance and long-term mechanical reliability.\u003c\/p\u003e\u003cp\u003eThis centrifugal circulator utilizes a liquid-lubricated motor and precision-balanced impeller to move fluid through closed-loop piping systems. The motor and pump assembly are engineered to provide consistent torque while minimizing energy consumption, ensuring that heat transfer is managed effectively across your entire manifold or radiator network.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Output:\u003c\/strong\u003e Reliable 1\/4 HP single-phase power for consistent water circulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction Quality:\u003c\/strong\u003e Bronze-fitted interior components designed to extend operational longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Compatibility:\u003c\/strong\u003e Engineered for standard hydronic heating and chilled water loops.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for residential hydronic heating systems, baseboard radiation circuits, and radiant floor heating manifolds requiring consistent, maintenance-free water movement.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43124026736734,"sku":"116431MF-132","price":1829.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/116431MF_132_image_ee807102-db1a-4818-815b-28e3383c17d8.png?v=1786029210","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-116431mf-132-h-51-cast-iron-bronze-fitted-circulator-pump","provider":"National Boiler Supply","version":"1.0","type":"link"}