{"product_id":"grundfos-nb-65-315-261-cast-iron-5-5-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 65-315\/261 Cast Iron 5.5 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003ePrimary heating distribution networks and boiler transfer lines feature the Grundfos NB 65-315\/261 end-suction pump. Coupled to a 5.5 kW motor drive, fluid enters through an axial DN 80 suction port and exits through a radial DN 65 discharge flange.\u003c\/p\u003e\u003cp\u003eVolumetric flow capacity achieves approx. 1222 L\/Min fluid displacement with a approx. 23.1 m maximum head parameter. 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 152 kg.\u003c\/p\u003e\u003cp\u003eSupplied by a 415 V three-phase source, the electric drive draws 10.6 Amps to produce 5.5 kW shaft power. Working tolerances accommodate fluid temperatures spanning -25°C to 120°C at pressures reaching 16 bar. Flanged connections feature DN 80 inlet and DN 65 outlet dimensions.\u003c\/p\u003e\u003cp\u003eDrive housing layout incorporates an IP55 ingress rating with 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\u003eReplaceable wear rings protect casing hydraulics and retain designed pumping clearances.\u003c\/li\u003e\n\u003cli\u003eSolid stub shaft and ball bearing arrangement counteracts operating mechanical stresses.\u003c\/li\u003e\n\u003cli\u003eStandardized PN16 dimensions per EN1092-2 align with facility pipe headers.\u003c\/li\u003e\n\u003cli\u003eIEC standardized electric drive maximum flow of continuous S1 operation in ambients up to 40°C.\u003c\/li\u003e\n\u003cli\u003eBack-pull-out arrangement allows fast access to motor and impeller without disturbing pipework.\u003c\/li\u003e\n\u003cli\u003ePrecision balancing of rotating parts delivers quiet, low-vibration fluid transfer.\u003c\/li\u003e\n\u003cli\u003eHeavy-section cast iron volute with integral mounting pads provides solid base support.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51269626626295,"sku":"93209352","price":8887.18,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-65-315-261-cast-iron-5-5-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791282061","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-65-315-261-cast-iron-5-5-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}