{"product_id":"grundfos-magna1-25-40-cast-iron-variable-speed-circulator-pump-mixing-loops-composite-impeller","title":"Grundfos MAGNA1 25-40 Cast Iron Variable Speed Circulator Pump for Mixing Loops with Composite Impeller","description":"\u003cp\u003eEngineered for low-energy variable circulation, the Grundfos MAGNA1 25-40 operates across heating mixing loops, air conditioning circuits, and ground-source heat pump systems. It features an integrated operating panel and frequency converter that automatically matches pump speed to varying thermal loads.\u003c\/p\u003e\n\u003cp\u003eA cast iron EN-GJL-200 pump housing with a 180 mm port-to-port dimension encloses a composite impeller and maintenance-free canned rotor. The pump body is rated for 10 bar maximum system pressure and accommodates fluid temperatures from -10°C to 110°C, with an overall weight of 4.41 kg.\u003c\/p\u003e\n\u003cp\u003eDriven by a permanent magnet motor with a maximum power input (P1) of 9 W to 56 W, electrical power input (P1) modulates between 9 W and 56 W with a maximum current draw of 0.45 A on a 1 x 230-240 V supply. The hydraulic assembly produces up to 4.24 m³\/h \\(71 L\/Min\\) against a maximum head of 2.875 m through 1 1\/2 inch threaded connections.\u003c\/p\u003e\n\u003cp\u003eNine selectable control settings include proportional pressure curves, constant pressure curves, and fixed constant curve speeds. The unit achieves an Energy Efficiency Index (EEI) of 0.20, incorporates Class F insulation with an IPX4D enclosure, and provides a digital start\/stop input with fault relay output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePermanent magnet motor technology achieves an Energy Efficiency Index (EEI) of 0.20\u003c\/li\u003e\n\u003cli\u003eNine control modes include three proportional pressure, three constant pressure, and three fixed speeds\u003c\/li\u003e\n\u003cli\u003ePower consumption self-modulates from 9 W to 56 W based on system demand\u003c\/li\u003e\n\u003cli\u003eCast iron EN-GJL-200 housing rated for 10 bar maximum operational pressure\u003c\/li\u003e\n\u003cli\u003eComposite impeller provides chemical corrosion resistance in closed hydronic loops\u003c\/li\u003e\n\u003cli\u003eDigital start\/stop input and fault alarm relay output enable building automation integration\u003c\/li\u003e\n\u003cli\u003eStandard 180 mm port-to-port length with 1 1\/2 inch threaded connections\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51139433922807,"sku":"99221216","price":1248.78,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-magna1-25-40-cast-iron-variable-speed-circulator-pump-mixing-loops-composite-impeller.png?v=1789019337","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-magna1-25-40-cast-iron-variable-speed-circulator-pump-mixing-loops-composite-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}