Grundfos SE1.75.100.150.2.52S.N.51D.A.T Cast Iron Sewage Pump for Sewage Transfer with S-Tube Impeller

Effective sewage transfer in municipal complex drainage requires reliable pumping assets built for high-volume liquid movement. The Grundfos SE1.75.100.150.2.52S.N.51D.A.T Submersible Wastewater Pump is engineered for intensive duty in collection pits and lift stations. This cast iron unit handles contaminated fluids at temperatures up to 40°C, supporting infrastructure protection in large-scale residential and industrial networks. The heavy-duty design facilitates permanent submerged service while maintaining high volumetric throughput in aggressive environments.

Performance is driven by a 15 kW two-pole motor operating on a 415v three-phase supply with a rated current of 28 Amps. This assembly achieves a maximum head of 32 m and a maximum flow of 3186 L/min, ensuring efficient evacuation of effluent and sewage. The unit utilizes a star-delta starting method to manage peak electrical loads and operates at a rated speed of 2966 rpm. Power is distributed through a 15-metre S1BN8-F power cable to facilitate deployment in subsurface networks and deep wastewater handling pits.

The centrifugal hydraulic system utilizes a high-efficiency S-TUBE impeller to manage solids in suspension up to 75 mm. This configuration provides superior clog resistance and ensures reliable wastewater transfer without the risk of internal blockages. By utilizing an S-TUBE design, the pump maintains consistent efficiency over thousands of service hours in municipal collection pits. This hydraulic setup is specifically intended for grey water and sewage transfer where maintaining flow without interruption is critical for facility maintenance.

Mechanical integrity is reinforced by a cast iron pump body and an IP68 enclosure rating for immersion up to 20 m. The motor is protected by a double mechanical shaft seal featuring silicon carbide faces in an oil bath, helping prevent liquid ingress into the motor assembly. This model includes internal moisture sensors and thermistors for real-time monitoring of the Class H insulated motor assembly. Standard DN 100 connections are used for both inlet and outlet to ensure compatibility with standard civil drainage infrastructure.

Features

• High-efficiency S-TUBE impeller manages solids up to 75 mm with significant resistance to clogging and blockages.
• Cast iron pump housing and motor shell provide a rigid structural foundation for submerged installations.
• Double mechanical shaft seal with silicon carbide faces ensures the motor remains protected from contaminated liquid.
• Class H insulated motor assembly includes integrated thermistors and moisture sensors for proactive monitoring.
• Two-pole 15 kW motor operating at 2966 rpm provides the torque required for processing high-volume sewage.
• DN 100 inlet and outlet ports allow for standardized integration into municipal wastewater pipework.
• Integrated cooling jacket supports operational integrity in both dry and submerged mounting configurations.