{"product_id":"grundfos-nb-40-315-305-cast-iron-4-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 40-315\/305 Cast Iron 4 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eCentral hydronic headers and secondary heating risers incorporate the Grundfos NB 40-315\/305 centrifugal pump. Driven by an electric 4 kW motor assembly, the pump incorporates an axial DN 65 suction port and a radial DN 40 discharge connection.\u003c\/p\u003e\u003cp\u003eLiquid transfer output attains approx. 458 L\/Min flow volume and develops a approx. 30.9 m maximum head rating. The pump housing is cast in EN-GJL-250 iron with cataphoretic electrocoating. Fluid displacement is driven by a stainless steel impeller and a BQQE mechanical shaft seal. Net product weight measures 130 kg.\u003c\/p\u003e\u003cp\u003eUnder a 415 V three-phase electrical supply, the motor draws 8.47 Amps to produce 4 kW power. Operational limits permit media temperatures from -25°C to 120°C under working pressures up to 16 bar. Flanged pipe connections measure DN 65 on the inlet and DN 40 on the outlet.\u003c\/p\u003e\u003cp\u003eDrive enclosure specifications feature IP55 ingress protection and Class F thermal insulation. Standard IEC electric drive design requires external motor overload protection. The back-pull-out structural layout permits complete motor and rotating assembly extraction without disconnecting piping headers.\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 maximum flow of 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":51269605622007,"sku":"93209286","price":7566.96,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-40-315-305-cast-iron-4-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791281976","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-40-315-305-cast-iron-4-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}