{"product_id":"grundfos-magna1-50-80-f-cast-iron-variable-speed-circulator-pump-mixing-loops-composite-impeller","title":"Grundfos MAGNA1 50-80 F Cast Iron Variable Speed Circulator Pump for Mixing Loops with Composite Impeller","description":"\u003cp\u003eThe Grundfos MAGNA1 50-80 F circulator pump combines a 50 mm flanged connection with high flow and 4.574 m of head to serve central heating distribution manifolds, chiller secondary headers, and district heating stations. Its internal inverter dynamically balances pressure across variable-flow circuits.\u003c\/p\u003e\n\u003cp\u003eConstructed with an EN-GJL-200 cast iron housing measuring 240 mm port-to-port, the unit incorporates an engineered composite impeller and maintenance-free canned rotor. It operates at working pressures up to 10 bar and fluid temperatures between -10°C and 110°C, with a net weight of 17.4 kg.\u003c\/p\u003e\n\u003cp\u003eThe single-phase 230-240 V ECM motor has a maximum power input (P1) of 21 W to 331 W while electrical power input (P1) modulates between 21 W and 331 W with a maximum current of 1.48 A. Peak hydraulic output provides maximum a flow rate of 16.03 m³\/h (267 L\/Min) against a maximum head of 4.574 m through DN 50 DIN flanged connections.\u003c\/p\u003e\n\u003cp\u003eA single push-button interface configures nine operating modes including proportional pressure, constant pressure, and fixed speed curves. The motor features Class F insulation, an IPX4D splash-proof housing, an EEI of 0.19, and fault alarm relay terminals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFlow capacity of 267 L\/Min and 4.574 m of head satisfy large commercial plant requirements\u003c\/li\u003e\n\u003cli\u003eDN 50 four-bolt flange configuration matches EN 1092-2 commercial piping specs\u003c\/li\u003e\n\u003cli\u003ePermanent magnet motor technology delivers an Energy Efficiency Index of 0.19\u003c\/li\u003e\n\u003cli\u003eOperating power self-adjusts between 21 W and 331 W according to thermal demand\u003c\/li\u003e\n\u003cli\u003eCast iron EN-GJL-200 pump body built for 10 bar maximum system pressure\u003c\/li\u003e\n\u003cli\u003eComposite impeller resists erosion in closed water and glycol loops\u003c\/li\u003e\n\u003cli\u003eIntegrated fault relay contact and remote digital run\/stop terminals for BMS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51139461578999,"sku":"99221334","price":3992.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-magna1-50-80-f-cast-iron-variable-speed-circulator-pump-mixing-loops-composite-impeller.png?v=1789019378","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-magna1-50-80-f-cast-iron-variable-speed-circulator-pump-mixing-loops-composite-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}