{"product_id":"grundfos-nb-40-125-130-cast-iron-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 40-125\/130 Cast Iron 0.37 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eClosed-loop circulation duties across heating and chilled water risers use the Grundfos NB 40-125\/130 end-suction pump. The unit couples a 0.37 kW drive motor to an axial DN 65 inlet nozzle and a radial DN 40 discharge connection.\u003c\/p\u003e\u003cp\u003eFlow delivery reaches 363 L\/Min under rated duty conditions with a maximum developed head of 3.899 m. 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 32 kg.\u003c\/p\u003e\u003cp\u003eConnected to a 415 V three-phase power feed, the drive draws 0.99 Amps while delivering 0.37 kW motor power. 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 ingress protection satisfies IP55 standards with 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\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\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\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51269599690999,"sku":"93209239","price":3019.12,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-40-125-130-cast-iron-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791281945","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-40-125-130-cast-iron-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}