{"product_id":"grundfos-nb-50-125-112-cast-iron-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 50-125\/112 Cast Iron 0.37 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eCooling tower circuit lines and heat rejection stations integrate the Grundfos NB 50-125\/112 centrifugal pump. Powered by a 0.37 kW electric drive, piping connects via an axial DN 65 suction port and a radial DN 50 discharge interface.\u003c\/p\u003e\u003cp\u003ePumping displacement generates approx. 600 L\/Min volumetric flow and overcomes a approx. 3.5 m maximum head. A cataphoretically coated EN-GJL-250 cast iron casing houses the precision stainless steel impeller and BQQE mechanical shaft seal. Total net product weight measures 35 kg.\u003c\/p\u003e\u003cp\u003eAn incoming 415 V three-phase feed drives the motor at 0.99 Amps rated draw for 0.37 kW power delivery. Permissible media temperatures range between -25°C to 120°C under system pressures up to 16 bar. Flanged line ports measure DN 65 for suction and DN 50 for discharge.\u003c\/p\u003e\u003cp\u003eIngress sealing complies with IP55 standards, complemented by Class F motor insulation. The motor requires external overload protection in the electrical control panel. A back-pull-out mechanical design enables service personnel to extract the impeller and drive assembly without dismantling pipe flanges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVolute casing design incorporates integral base feet for direct mounting to concrete plinths.\u003c\/li\u003e\n\u003cli\u003eInternal wear rings retain hydraulic clearance tolerances throughout long service cycles.\u003c\/li\u003e\n\u003cli\u003eSolid stub shaft supported by sealed ball bearings carries axial and radial loads.\u003c\/li\u003e\n\u003cli\u003eStandard PN16 flanged port interfaces align with EN1092-2 heating and cooling headers.\u003c\/li\u003e\n\u003cli\u003eTotally enclosed fan cooled IEC motor maximum flow of S1 duty cycles in ambient environments up to 40°C.\u003c\/li\u003e\n\u003cli\u003eService-friendly back-pull-out layout enables rotating element servicing without removing pipework.\u003c\/li\u003e\n\u003cli\u003eBalanced impeller geometry and shaft construction reduce operational vibration throughout duty range.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51269606768887,"sku":"93209291","price":2984.52,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-50-125-112-cast-iron-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791281982","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-50-125-112-cast-iron-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}