{"product_id":"grundfos-nb-40-250-260-cast-iron-3-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 40-250\/260 Cast Iron 3 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eFacility chilled water headers and cooling circuits rely on the Grundfos NB 40-250\/260 centrifugal pump. The unit couples a 3 kW drive motor to an axial DN 65 inlet nozzle and a radial DN 40 discharge connection.\u003c\/p\u003e\u003cp\u003eOperational delivery achieves approx. 593 L\/Min rated throughput while generating up to 23.6 m maximum head. Volute casing construction features EN-GJL-250 cast iron with cataphoretic electrocoating, paired with a stainless steel impeller and BQQE shaft seal. Product net weight equals 83 kg.\u003c\/p\u003e\u003cp\u003ePower delivery via a 415 V three-phase line operates the 3 kW motor at a current draw of 6.23 Amps. Operating limits support liquid temperatures from -25°C to 120°C and maximum system pressures of 16 bar. Flanged pipework attaches via DN 65 inlet and DN 40 outlet ports.\u003c\/p\u003e\u003cp\u003eMotor enclosure integrity satisfies IP55 standards, utilizing Class F temperature insulation. Standard motor installation requires external electrical overload protection. The back-pull-out design allows complete drive and rotating assembly extraction while leaving the casing secured to distribution pipework.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStandard PN16 flanged port interfaces align with EN1092-2 heating and cooling headers.\u003c\/li\u003e\n\u003cli\u003eTotally enclosed fan cooled IEC motor maximum flow of S1 duty cycles in ambient environments up to 40°C.\u003c\/li\u003e\n\u003cli\u003eService-friendly back-pull-out layout enables rotating element servicing without removing pipework.\u003c\/li\u003e\n\u003cli\u003eBalanced impeller geometry and shaft construction reduce operational vibration throughout duty range.\u003c\/li\u003e\n\u003cli\u003eVolute casing design incorporates integral base feet for direct mounting to concrete plinths.\u003c\/li\u003e\n\u003cli\u003eInternal wear rings retain hydraulic clearance tolerances throughout long service cycles.\u003c\/li\u003e\n\u003cli\u003eSolid stub shaft supported by sealed ball bearings carries axial and radial loads.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51269603721463,"sku":"93209282","price":5268.73,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-40-250-260-cast-iron-3-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791281971","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-40-250-260-cast-iron-3-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}