{"product_id":"grundfos-nb-65-250-254-cast-iron-5-5-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 65-250\/254 Cast Iron 5.5 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eMulti-zone hydronic circulation stations and plant manifolds use the Grundfos NB 65-250\/254 end-suction pump. Fitted with a 5.5 kW motor, system piping interfaces through an axial DN 80 suction port and a radial DN 65 discharge flange.\u003c\/p\u003e\u003cp\u003eHydraulic output volume provides approx. 1357 L\/Min fluid circulation across a approx. 22.6 m maximum head limit. Housing construction features cataphoretically coated EN-GJL-250 cast iron, accommodating a stainless steel impeller and a BQQE mechanical seal. Net weight measures 151 kg.\u003c\/p\u003e\u003cp\u003eThe unit draws 10.6 Amps from a 415 V three-phase electrical connection to generate 5.5 kW mechanical drive. Fluid temperature capabilities range from -25°C to 120°C under working pressure limits up to 16 bar. Flange interfaces are dimensioned at DN 80 inlet and DN 65 outlet.\u003c\/p\u003e\u003cp\u003eCasing construction conforms to IP55 ingress requirements with Class F temperature insulation. External motor overload protection must be provided by the installer. The back-pull-out construction allows extraction of the motor and rotating components without disturbing suction or discharge pipe connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIntegral casing support feet provide direct anchoring to plant room inertia bases and plinths.\u003c\/li\u003e\n\u003cli\u003ePrecision balanced rotating components reduce hydraulic noise and mechanical shaft deflection.\u003c\/li\u003e\n\u003cli\u003eRenewable casing wear rings retain pump efficiency and avoid direct volute casing wear.\u003c\/li\u003e\n\u003cli\u003eSolid shaft assembly with sealed ball bearings absorbs operational hydraulic and radial forces.\u003c\/li\u003e\n\u003cli\u003eEN1092-2 flanged connections conform to standard PN16 pipework dimensions.\u003c\/li\u003e\n\u003cli\u003eContinuous duty S1 rated electric drive motor operates in ambient temperatures up to 40°C.\u003c\/li\u003e\n\u003cli\u003eBack-pull-out layout permits motor and impeller servicing without breaking pipe connections.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51269625250039,"sku":"93209350","price":7619.32,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-65-250-254-cast-iron-5-5-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791282056","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-65-250-254-cast-iron-5-5-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}