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SKU: 99959156
Grundfos SL.100.200.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Wastewater Transfer with Open S-Tube Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
High-volume wastewater transfer is managed by the Grundfos SL.100.200.4.52H.N.51D.A.T. The cast iron 4-pole pump features an Open S-Tube impeller, draws 41 Amps from a 20 kW 415V motor, and delivers 8,340 L/min at 32.7 m head for treatment plant duty. The four-pole configuration operating at 1,478 rpm ensures consistent hydraulic performance in demanding wastewater networks. The system handles liquid temperatures from -10 to 40°C and is designed for permanent submerged installation.
Hydraulic performance is provided by a 20 kW four-pole motor on a 415v three-phase supply, generating a maximum flow of 8,340 L/min. This model achieves a maximum total head of 32.7 m for wastewater transfer duties. Operating with a rated current of 41 Amps, the unit maintains consistent torque and circulation stability during continuous duty cycles. Rapid evacuation is achieved through the DN 100 discharge port to protect infrastructure in gravity drainage networks.
Internal fluid paths feature an Open S-Tube centrifugal impeller designed for the free passage of solids in suspension. This configuration facilitates the movement of wastewater without internal clogging that could otherwise compromise volumetric throughput over thousands of operating hours. By utilizing a high-efficiency hydraulic profile, the unit minimizes internal friction and vibration to protect the rotating assembly during prolonged duty cycles. The Open S-Tube design is intended for wastewater transfer where reliable flow behavior is required.
Mechanical construction features a heavy-duty cast iron housing and motor shell with an IP68 enclosure rating for immersion up to 20 m. Motor insulation is maintained by a shielded assembly with double mechanical shaft seals in an oil bath for maximum durability. Integrated moisture sensors and thermistors allow for proactive monitoring and early fault detection. The casting includes a DN 150 inlet and a DN 100 outlet connection for integration into standard wastewater infrastructure.
Features
- Four-pole motor configuration operating at 1,478 rpm provides the hydraulic torque needed for processing high-volume wastewater.
- Open S-Tube impeller design enables the passage of solids through the pump casing without compromising hydraulic throughput.
- Heavy-duty cast iron housing and motor shell provide a stable and rigid foundation for permanent submerged installations.
- Primary silicon carbide shaft seal and secondary carbon/silicon carbide seal in an oil bath protect the motor from liquid ingress.
- IP68 enclosure rating confirms the system is suitable for continuous duty in submerged environments up to 20 m deep.
- Integrated thermistors and moisture sensors enable real-time monitoring to safeguard the electrical assembly.
- DN 150 inlet and DN 100 outlet connections allow for high-volume wastewater transfer through standard plumbing networks.
SPECIFICATIONS
| Max Flow | 8340 L/Min |
| Max Head | 32.7 m |
| Power | 20 kW / 415v |
| Rated Current | 41 Amps |
| Suitable For | Wastewater Transfer |
| Body Material | Cast iron |
| Liquid Temperature | Maximum 40°C |
| Inlet Size | 150 mm |
| Outlet Size | 100 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 peak fluid displacement volume can this pump deliver?
Moving liquid through the system, the Grundfos SL.100.200.4.52H.N.51D.A.T maintains an operational throughput of up to 8340 L/Min during peak demand.
What total dynamic head can this pump overcome in vertical pipework?
Dynamic lift generated by the SL.100.200.4.52H.N.51D.A.T reaches a maximum elevation head of approximately 32.7 m across discharge lines.
What electrical connection and motor power run this pump?
Connecting across 415 V three-phase lines, the SL-100-200-4-52H-N-51D-A-T draws approximately 41 Amps with an efficient 20 kW motor.
How does the impeller design prevent ragging and blockages?
Spherical solids and particulate up to 80 mm pass freely through the SL 100 200 4 52H N 51D A T, thanks to its debris-resistant S-tube runner.
How does this pump connect to standard plumbing and flanged lines?
Discharge pipework interfaces directly with the SL/100/200/4/52H/N/51D/A/T through a standard auto-coupling for quick field installation.
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