{"product_id":"grundfos-sl-56h-280-4-50d-150-cast-iron-high-head-effluent-pump-open-s-tube-impeller","title":"Grundfos SL.56H.280.4.50D.150 Cast Iron High-Head Effluent Pump with Open S-Tube Impeller","description":"\u003cp\u003eThe Grundfos SL.56H.280.4.50D.150 is designed for permanent submerged installation in treatment plants and industrial sumps requiring reliable discharge performance. This cast iron unit holds CE EN12050-1 certification along with ROHS and WEEE approvals. It is developed for handling raw effluents and untreated wastewater containing large solids.\u003c\/p\u003e\u003cp\u003eA 28 kW 4-pole motor powers the unit at 1490 rpm on a 3 x 415 V supply with a rated current of 60.5 Amps. It achieves a maximum head up to 46 m and a maximum flow up to 9180 L\/min. The system is rated for continuous S1 duty in liquids between 0°C and 40°C, with cooling provided by the surrounding media during submerged operation.\u003c\/p\u003e\u003cp\u003eThe hydraulic system uses an Open S-tube impeller with a 363.2 mm actual diameter to handle untreated wastewater containing solids. The nominal duty head is 26.85 m. The hydraulic design incorporates a DN 200 inlet and a DN 150 (6\") outlet, supporting high-volume wastewater transfer while reducing the risk of clogging.\u003c\/p\u003e\u003cp\u003eConstruction features an EN-GJL-250 cast iron pump housing and motor casing with double mechanical shaft seals and integrated PTO sensors for motor protection and monitoring. It is supplied with a 10-metre S1BC4N8-F EMC power cable and an IP68 enclosure suitable for installation depths up to 30 metres. The unit is compatible with the Grundfos auto-coupling system (97695489).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOpen S-tube impeller with a 363.2 mm actual diameter for solids handling in effluent transfer sumps.\u003c\/li\u003e\n\u003cli\u003eEN-GJL-250 cast iron pump housing and motor casing for structural durability in submerged service.\u003c\/li\u003e\n\u003cli\u003eDouble mechanical shaft seal arrangement with SiC\/SiC primary seal and Silicon Carbide\/Carbon secondary seal.\u003c\/li\u003e\n\u003cli\u003eIntegrated PTO sensors for motor protection and monitoring within the windings for reliability.\u003c\/li\u003e\n\u003cli\u003eSupplied with a 10-metre S1BC4N8-F EMC power cable for reliable electrical connection.\u003c\/li\u003e\n\u003cli\u003eIP68 enclosure suitable for installation depths up to 30 metres with a 10 bar operating pressure limit.\u003c\/li\u003e\n\u003cli\u003eCompatible with the Grundfos auto-coupling system (97695489) for simplified submerged installation.\u003c\/li\u003e\n\u003cli\u003eClass H motor insulation with support for up to 30 starts per hour during continuous S1 duty cycles.\u003c\/li\u003e\n\u003c\/ul\u003e ","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50901324366071,"sku":"92955432","price":39852.51,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-sl-56h-280-4-50d-150-cast-iron-high-head-effluent-pump-open-s-tube-impeller.png?v=1782731438","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-sl-56h-280-4-50d-150-cast-iron-high-head-effluent-pump-open-s-tube-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}