{"product_id":"grundfos-nb-50-125-125-cast-iron-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 50-125\/125 Cast Iron 0.55 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eAir handling unit water feeds and thermal exchange manifolds use the Grundfos NB 50-125\/125 end-suction pump. The unit couples a 0.55 kW drive motor to an axial DN 65 inlet nozzle and a radial DN 50 discharge connection.\u003c\/p\u003e\u003cp\u003eFluid delivery performance provides 540 L\/Min rated flow with a maximum developed head of 3.932 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 40 kg.\u003c\/p\u003e\u003cp\u003eElectric power input of 415 V across three phases provides 0.55 kW output at a current draw of 1.23 Amps. 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 50 outlet ports.\u003c\/p\u003e\u003cp\u003ePhysical drive protection includes an IP55 enclosure rating and Class F thermal 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\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 rated for 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":51269607325943,"sku":"93209293","price":3252.87,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-50-125-125-cast-iron-end-suction-centrifugal-pump-with-closed-impeller.png?v=1791281984","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-50-125-125-cast-iron-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}