{"product_id":"grundfos-nb-80-160-161-cast-iron-2-2-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 80-160\/161 Cast Iron 2.2 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eCentral heating plant headers and hydronic risers feature the Grundfos NB 80-160\/161 centrifugal pump. Coupled to a 2.2 kW motor drive, fluid enters through an axial DN 100 suction port and exits through a radial DN 80 discharge flange.\u003c\/p\u003e\u003cp\u003eLiquid pumping rating achieves approx. 1904 L\/Min fluid circulation across a maximum head of approx. 8.1 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 75 kg.\u003c\/p\u003e\u003cp\u003eCurrent draw reaches 4.5 Amps from a 415 V three-phase connection to deliver 2.2 kW shaft power. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 100 inlet and DN 80 outlet dimensions.\u003c\/p\u003e\u003cp\u003eEnvironmental enclosure design features IP55 sealing protection and Class F 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\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\u003cli\u003eBack-pull-out construction allows drive and impeller removal without disconnecting suction or discharge lines.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51274478452983,"sku":"93209359","price":4716.14,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-80-160-161-cast-iron-2-2-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791359412","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-80-160-161-cast-iron-2-2-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}