Grundfos SE1.80.100.200.2.52S.N.51D.A.T Cast Iron Sewage Pump for Civil Drainage with S-Tube Impeller

Wastewater transfer and sewage pumping in municipal networks require robust subsurface assets capable of processing high ingress volumes. The Grundfos SE1.80.100.200.2.52S.N.51D.A.T Submersible Wastewater Pump ensures consistent performance for effluent management where fluid temperatures reach 40°C. Maintaining hydraulic throughput during continuous duty is essential for drainage stations and large collection pits prone to aggressive ingress. This assembly is intended for civil drainage infrastructure where reliable liquid movement is required for facility maintenance and protection.

Technical capacity is driven by a 20 kW two-pole motor operating on a 415v three-phase supply with a rated current of 36 Amps. This configuration generates a maximum head of 42 m and a maximum flow of 3366 L/min for high-velocity wastewater discharge. The motor operates at 2968 rpm and utilizes a star-delta starting method to manage peak electrical loads during initial activation. Power is distributed through a 15-metre power cable to facilitate deployment in subsurface wastewater handling pits and treatment plant infrastructure.

Internal centrifugal pathways utilize an S-TUBE impeller designed to facilitate the passage of solids up to 80 mm without clogging or internal contact. This specialized hydraulic configuration provides high efficiency and significant blockage resistance, ensuring reliable sewage transfer during intensive service. By optimizing the internal fluid paths, the pump maintains volumetric efficiency over thousands of service hours in municipal collection networks. The S-TUBE impeller is specifically engineered for high-volume liquid handling where durability is critical for system reliability.

Mechanical construction features a heavy-duty cast iron body and motor shell with an IP68 protection rating for depths up to 20 m. Reliability is supported by a double mechanical shaft seal featuring silicon carbide faces in an oil bath for motor protection. Integrated thermistors and moisture sensors enable proactive monitoring of the Class H insulated motor assembly in aggressive submerged conditions. The unit includes DN 100 inlet and DN 100 outlet connections for high-capacity integration into standardized wastewater infrastructure.

Features

• S-TUBE impeller configuration provides efficient solids handling and reduces the risk of internal blockages in sewage networks.
• Heavy-duty cast iron housing and motor shell ensure structural durability for permanent submerged duty up to 20 m deep.
• Double mechanical shaft seal with silicon carbide faces ensures the motor remains shielded from liquid ingress.
• Integrated thermistors and moisture sensors facilitate monitoring of the Class H insulated motor assembly.
• Two-pole 20 kW motor operating at 2968 rpm provides the torque required for high-velocity municipal wastewater discharge.
• Standardized DN 100 inlet and outlet connections allow for simplified integration into existing municipal pipework.
• Built-in cooling jacket enables reliable performance in both dry and submerged installation environments.