{"product_id":"grundfos-nb-32-160-139-cast-iron-2-2-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 32-160\/139 Cast Iron 2.2 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eConstructed for fixed foundation mounting in mechanical rooms, the NB 32-160\/139 single-stage end-suction pump connects via DN 50 suction and DN 32 discharge ports. A 2.2 kW electric motor provides mechanical power for continuous water circulation across building service headers.\u003c\/p\u003e\u003cp\u003eFluid output parameters show a rated throughput of 381 L\/Min and a maximum head limit of 19.46 m. Electrocoating treatment on the cast iron casing limits rust in hydronic loops. The internal rotor holds a stainless steel impeller with bronze wear rings. Unit physical weight is 49 kg.\u003c\/p\u003e\u003cp\u003eOperating on a 415 V three-phase power supply, the NB 32-160\/139 electric motor yields 2.2 kW output power with a current draw of 7.56 Amps. Media temperature capabilities span from -25°C to 120°C under continuous line pressures up to 16 bar. Flanged ports feature DN 50 suction and DN 32 discharge sizing.\u003c\/p\u003e\u003cp\u003eWinding insulation on the NB 32-160\/139 motor complies with Class F standards within an IP55 dust and spray resistant motor housing equipped with PTC thermistors. Service procedures benefit from back-pull-out construction, permitting internal rotor disassembly without disconnecting main system pipework headers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePN16 flanged connection ratings on sizes up to and including DN 150 provide elevated working pressure capability beyond standard EN733 10 bar ratings.\u003c\/li\u003e\n\u003cli\u003eO-ring seal between pump housing and cover eliminates leakage risk at the volute-to-cover joint under sustained operating pressures.\u003c\/li\u003e\n\u003cli\u003eOptimised impeller and volute hydraulics deliver unimpeded liquid flow through the pump casing, reducing internal turbulence losses.\u003c\/li\u003e\n\u003cli\u003eAll stainless steel shaft construction provides improved corrosion resistance compared to carbon steel alternatives in wetted service areas.\u003c\/li\u003e\n\u003cli\u003eMechanical shaft seal can be replaced without removing the impeller, system piping, pump volute casing or drive motor from the installation.\u003c\/li\u003e\n\u003cli\u003eHousing, impeller and wear ring use dissimilar material pairings to prevent galling and ensure no sticking elements during extended standby periods.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency motor selection is configured to match the specific power supply characteristics, pumping environment and liquid properties of each installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIMPORTANT:\u003c\/strong\u003eBulk freight charges apply. Please contact us for a freight quote before ordering.\u003c\/p\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":51148673843447,"sku":"93207161","price":3512.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-32-160-139-cast-iron-2-2-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1789124212","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-32-160-139-cast-iron-2-2-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}