{"product_id":"grundfos-nb-40-315-298-cast-iron-30-kw-end-suction-centrifugal-pump-with-closed-impeller","title":"Grundfos NB 40-315\/298 Cast Iron 30 kW End Suction Centrifugal Pump with Closed Impeller","description":"\u003cp\u003eFeaturing an end-suction structural layout with DN 65 axial suction and DN 40 radial discharge ports, the NB 40-315\/298 pump processes clean liquid media across active HVAC circuits. Powered by a 30 kW electric motor, the system operates across continuous commercial pumping cycles.\u003c\/p\u003e\u003cp\u003eThe hydraulic wet-end achieves a rated flow capacity of 666 L\/Min with a maximum head rating of 100.8 m. Cast iron housing materials provide solid pressure containment up to 16 bar. The internal assembly houses a stainless steel impeller fitted with bronze wear rings. Net equipment weight is 314 kg.\u003c\/p\u003e\u003cp\u003ePower specifications for the NB 40-315\/298 end-suction pump call for a 415 V three-phase electrical supply rated at 30 kW motor power. Current draw under load measures 56 Amps. Operating fluid temperatures span -25°C to 120°C with a maximum working pressure rating of 16 bar. The housing features DN 65 axial suction and DN 40 radial discharge ports.\u003c\/p\u003e\u003cp\u003eThe NB 40-315\/298 electric motor carries an IP55 ingress protection rating alongside Class F thermal insulation and integrated PTC thermistors. System maintenance relies on back-pull-out architecture, enabling drive head disassembly while the pump volute stays secured to concrete foundation bases and pipe runs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\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\u003cli\u003eBack pull-out design allows complete rotating assembly removal including motor, coupling and impeller without disturbing pump housing or connected pipework.\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":51148677382391,"sku":"93209285","price":14542.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-nb-40-315-298-cast-iron-30-kw-end-suction-centrifugal-pump-with-closed-impeller.png?v=1789124262","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-nb-40-315-298-cast-iron-30-kw-end-suction-centrifugal-pump-with-closed-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}