{"product_id":"grundfos-sl-56m-320-4-50d-200-cast-iron-medium-head-drainage-pump-open-s-tube-impeller","title":"Grundfos SL.56M.320.4.50D.200 Cast Iron Medium-Head Drainage Pump with Open S-Tube Impeller","description":"\u003cp\u003eDesigned for permanent submerged installation in drainage systems, the Grundfos SL.56M.320.4.50D.200 handles high-volume wastewater transfer in municipal infrastructure. This cast iron unit holds CE EN12050-1 certification with ROHS and WEEE environmental approvals. It is suitable for centralized collection sumps handling raw effluents containing solids.\u003c\/p\u003e\u003cp\u003eA 32 kW 4-pole motor powers the unit at 1490 rpm on a 3 x 415 V supply with a rated current of 65.5 Amps. It achieves a maximum flow up to 15720 L\/min and a maximum head up to 32.5 m. The motor is rated for continuous S1 duty, with cooling managed by the surrounding liquid during operation.\u003c\/p\u003e\u003cp\u003eThe hydraulic system uses an Open S-tube impeller with a 334.5 mm actual diameter for managing untreated wastewater. The nominal duty head is 17.17 m. The design features dual DN 200 connections with DIN flange standards, supporting high-volume wastewater transfer while reducing the risk of clogging in municipal drainage networks.\u003c\/p\u003e\u003cp\u003eConstruction includes 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOpen S-tube impeller design with 334.5 mm diameter for solids handling in municipal drainage.\u003c\/li\u003e\n\u003cli\u003eCast iron EN-GJL-250 pump housing and motor casing for durability in permanent 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 safety.\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 and 9 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 (96641489) for simplified maintenance access.\u003c\/li\u003e\n\u003c\/ul\u003e ","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50901324923127,"sku":"92850511","price":45872.97,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-sl-56m-320-4-50d-200-cast-iron-medium-head-drainage-pump-open-s-tube-impeller.png?v=1782731454","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-sl-56m-320-4-50d-200-cast-iron-medium-head-drainage-pump-open-s-tube-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}