Grundfos SE2.125.300.160.6.52E.N.51D.A.T Cast Iron Sewage Pump for Effluent Handling with Dual S-Tube Impeller

Infrastructure maintenance in high-volume collection centers and subsurface sewage networks depends on the performance of the SE2.125.300.160.6.52E.N.51D.A.T Submersible Wastewater Pump. This unit facilitates stable liquid movement in municipal environments where consistent ingress and high flow requirements are the primary operational challenges. It supports permanent submerged service and is capable of processing effluent with a liquid temperature range of 10°C to 40°C. For facilities managing massive discharge, this cast iron assembly provides a durable solution for high-capacity stations.

Technical performance is delivered by a 16 kW six-pole motor operating on a 415v three-phase supply with a rated current of 33 Amps. The pump generates a maximum flow of 19440 L/min and reaches a maximum head of approximately 9.7 m to satisfy specific site discharge requirements. A star-delta starting method is utilized to manage peak electrical loads and ensure torque stability at a rated speed of 975 rpm. Deployment in deep subsurface pits is supported by a 15-metre S1BN8-F power cable and an IP68 enclosure rating for depths up to 20 m across an ambient temperature range of -20 to 40°C.

Internal hydraulics utilize a DUAL S-TUBE impeller designed to manage the passage of solids up to 125 mm without inducing internal contact or clogging. This specialized configuration provides superior blockage resistance compared to traditional hydraulics, ensuring reliable wastewater transfer during prolonged service cycles. By enabling the free movement of large suspended particles through the housing, the unit maintains its volumetric throughput over thousands of operating hours. This DUAL S-TUBE configuration is specifically engineered for municipal wastewater handling where system reliability is critical for maintenance.

Structural construction features a heavy-duty cast iron pump body and motor shell designed for high-capacity service. Motor protection is provided by a double mechanical shaft seal utilizing silicon carbide faces in an oil bath to shield the assembly from liquid ingress. Integrated thermistors and moisture sensors enable proactive monitoring of the Class H insulated motor assembly in aggressive municipal environments. Standardized DN 300 inlet and DN 300 outlet connections allow for high-capacity integration into municipal wastewater pipework and standardized civil drainage systems.

Features

• DUAL S-TUBE impeller design enables the passage of solids up to 125 mm with significant resistance to internal clogging.
• Heavy-duty cast iron housing and motor shell provide the structural durability required for submerged installations up to 20 m.
• Double mechanical shaft seal utilizing silicon carbide faces ensures the motor remains shielded from ingress.
• Internal moisture sensors and thermistors provide monitoring to safeguard the Class H insulated motor assembly.
• Six-pole 16 kW motor configuration operating at 975 rpm provides the torque needed for high-volume effluent pumping.
• DN 300 inlet and DN 300 outlet connections allow for high-capacity liquid transfer through standardized pipework.
• Certified for operation in ambient temperature environments ranging from -20°C to 40°C.