Roll over image to zoom
SKU: 92850524
Grundfos SL.56L.215.6.50D.300 Cast Iron Low-Head Wastewater Pump with Open S-Tube Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The 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.
Powered 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.
The 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.
Construction 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.
FEATURES
- Open S-tube impeller with 390.9 mm actual diameter for handling untreated wastewater containing solids.
- EN-GJL-250 cast iron pump housing and motor casing for structural integrity in submerged wet wells.
- Double mechanical shaft seal arrangement with SiC/SiC primary seal and Silicon Carbide/Carbon secondary seal.
- Integrated PTO sensors for motor protection and monitoring within the windings for safety.
- Supplied with a 10-metre S1BC4N8-F EMC power cable for reliable electrical connection in pump stations.
- IP68 enclosure suitable for installation depths up to 30 metres and 5 bar maximum operating pressure.
- Class H motor insulation with support for up to 30 starts per hour during continuous S1 duty cycles.
- Compatible with the Grundfos auto-coupling system (96255839) for simplified maintenance access.
SPECIFICATIONS
| Max Flow | 22440 L/Min |
| Max Head | 16 m |
| Power | 21.5 kW / 415v |
| Rated Current | 51 Amps |
| Suitable For | Wastewater Pumping |
| Body Material | Cast iron |
| Liquid Temperature | Maximum 40°C |
| Inlet Size | 300 mm |
| Outlet Size | 300 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
What discharge flow rate does this pump maintain during peak operation?
Displacing fluid into connected headers, the Grundfos SL.56L.215.6.50D.300 sustains up to 22440 L/Min of volumetric throughput.
How much pumping height does this pump provide?
Vertical elevation capability on the SL.56L.215.6.50D.300 reaches a maximum dynamic head of approximately 16 m under rated conditions.
What motor power rating and running current power this pump?
Powered by a dedicated 21.5 kW motor, the SL-56L-215-6-50D-300 connects to 415 V three-phase mains power with a rated current draw of 51 Amps.
What metallurgy is selected for the pump body to resist abrasive wear?
Manufactured with quality materials, the SL 56L 215 6 50D 300 incorporates high-grade alloy for dependable longevity and resistance to fluid erosion.
What connection layout and port dimensions are featured on this unit?
Connecting via a standard auto-coupling (96255839), the SL/56L/215/6/50D/300 aligns cleanly with system plumbing headers.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us