{"product_id":"grundfos-nb-100-250-245-cast-iron-11-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 100-250\/245 Cast Iron 11 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eCore chilled water risers and secondary coil feeds feature the Grundfos NB 100-250\/245 centrifugal pump. Coupled to a 11 kW motor drive, fluid enters through an axial DN 125 suction port and exits through a radial DN 100 discharge flange.\u003c\/p\u003e\u003cp\u003eOperational fluid delivery reaches approx. 3472 L\/Min maximum volume and develops a maximum head of approx. 20.6 m. Constructed with an EN-GJL-250 cast iron volute protected by cataphoretic electrocoating, internal hydraulics feature a stainless steel impeller and BQQE mechanical shaft seal. Net weight is 232 kg.\u003c\/p\u003e\u003cp\u003eElectric motor operation on a 415 V three-phase feed requires 22.3 Amps running current for 11 kW. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 125 inlet and DN 100 outlet dimensions.\u003c\/p\u003e\u003cp\u003ePhysical housing engineering complies with IP55 enclosure criteria and Class F winding insulation. Because built-in thermal protection is not included, external motor overload protection must be supplied. Maintenance is streamlined via a back-pull-out arrangement allowing rotating element removal while the casing remains connected to piping.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBack-pull-out construction allows drive and impeller removal without disconnecting suction or discharge lines.\u003c\/li\u003e\n\u003cli\u003ePrecision balanced rotor and runner assemblies minimize operating vibration across all pump speeds.\u003c\/li\u003e\n\u003cli\u003eCast iron volute casing with integral mounting feet absorbs hydraulic forces and pipework stresses.\u003c\/li\u003e\n\u003cli\u003eReplaceable wear rings retain correct internal hydraulic clearances over long operating periods.\u003c\/li\u003e\n\u003cli\u003eSolid stub shaft configuration supported by deep groove ball bearings absorbs axial thrust loads.\u003c\/li\u003e\n\u003cli\u003eStandardized EN1092-2 PN16 flange dimensions match standard commercial and district pipe manifolds.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency IEC electric drive motor rated for S1 continuous operation in ambient conditions up to 40°C.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51274508075255,"sku":"93207123","price":10601.97,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-100-250-245-cast-iron-11-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791359474","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-100-250-245-cast-iron-11-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}