{"product_id":"grundfos-sl-56l-215-6-50d-300-cast-iron-low-head-wastewater-pump-open-s-tube-impeller","title":"Grundfos SL.56L.215.6.50D.300 Cast Iron Low-Head Wastewater Pump with Open S-Tube Impeller","description":"\u003cp\u003eThe Grundfos SL.56L.215.6.50D.300 is designed for high-volume transfer in wastewater pumping stations and large-scale municipal networks. This cast iron model holds CE EN12050-1 certification along with ROHS and WEEE approvals. It is intended for permanent submerged installation in systems handling raw effluents and untreated wastewater containing solids.\u003c\/p\u003e\u003cp\u003ePowered by a 21.5 kW 6-pole motor operating at 990 rpm on a 3 x 415 V supply, the pump achieves a maximum flow up to 22440 L\/min and a maximum head up to 16 m with a rated current of 51 Amps. The unit is rated for continuous S1 submerged duty in liquids between 0°C and 40°C.\u003c\/p\u003e\u003cp\u003eThe hydraulic system uses an Open S-tube impeller with a 390.9 mm actual diameter for solids handling. The nominal duty head is 9.02 m. The design features DN 300 inlet and outlet connections with DIN flange standards, supporting consistent wastewater transfer while reducing the risk of clogging in collection sumps.\u003c\/p\u003e\u003cp\u003eConstruction features an EN-GJL-250 cast iron pump housing and motor casing with double mechanical shaft seals. Protection is provided by integrated PTO sensors for motor protection and monitoring. The unit is supplied with a 10-metre S1BC4N8-F EMC power cable and an IP68 enclosure suitable for installation depths up to 30 metres.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOpen S-tube impeller with 390.9 mm actual diameter for handling untreated wastewater containing solids.\u003c\/li\u003e\n\u003cli\u003eEN-GJL-250 cast iron pump housing and motor casing for structural integrity in submerged wet wells.\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 safety.\u003c\/li\u003e\n\u003cli\u003eSupplied with a 10-metre S1BC4N8-F EMC power cable for reliable electrical connection in pump stations.\u003c\/li\u003e\n\u003cli\u003eIP68 enclosure suitable for installation depths up to 30 metres and 5 bar maximum operating pressure.\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\u003cli\u003eCompatible with the Grundfos auto-coupling system (96255839) for simplified maintenance access.\u003c\/li\u003e\n\u003c\/ul\u003e ","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50901325218039,"sku":"92850524","price":34465.04,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-sl-56l-215-6-50d-300-cast-iron-low-head-wastewater-pump-open-s-tube-impeller.png?v=1782731461","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-sl-56l-215-6-50d-300-cast-iron-low-head-wastewater-pump-open-s-tube-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}