Grundfos SE1.75.100.130.2.52S.N.51D.A.T Cast Iron Sewage Pump for Civil Drainage with S-Tube Impeller

Municipal wastewater transfer in large-scale networks requires heavy-duty subsurface assets capable of handling consistent fluid ingress in permanent submerged environments. The Grundfos SE1.75.100.130.2.52S.N.51D.A.T Submersible Wastewater Pump addresses these industrial requirements with a robust design suitable for both dry and submerged installation. Maintaining consistent throughput is critical for municipal sewage systems and large collection pits where fluids reach temperatures of 40°C. This unit provides a reliable solution for effluent management and collection stations prone to demanding service cycles.

Technical performance is delivered by a 13 kW two-pole motor configured for a 415v three-phase supply, producing a rated current of 25 Amps. The pump generates a maximum flow of 2700 L/min and reaches a maximum head of 29 m to satisfy specific site discharge requirements. A star-delta starting method manages electrical loads during initial activation, while the 2973 rpm rated speed ensures stable pressure for high-velocity transfer. A 15-metre power cable is included to support deployment in deep-pit infrastructure and treatment plants.

Internal hydraulics utilize a cast iron S-TUBE impeller designed to facilitate the passage of solids in suspension without internal contact. This specialized hydraulic configuration provides high efficiency and significant clog resistance, reducing the risk of blockages during continuous service in wastewater networks. By optimizing internal fluid paths, the assembly handles particles up to 75 mm without compromising volumetric throughput. The S-TUBE impeller is specifically engineered for reliable sewage handling and effluent transfer where durability is a priority.

Mechanical construction consists of a heavy-duty cast iron housing and motor shell with an IP68 protection rating for depths up to 20 m. Long-term 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. Standardized DN 100 inlet and outlet connections allow for seamless integration into municipal wastewater pipework and standardized drainage systems.

Features

• Cast iron S-TUBE impeller provides efficient solids handling and reduces the risk of internal blockages in wastewater networks.
• Heavy-duty cast iron housing and motor shell ensure structural durability for submerged duty up to 20 m deep.
• Double mechanical shaft seal with silicon carbide faces prevents liquid ingress into the motor housing.
• Integrated thermistors and moisture sensors facilitate monitoring of the Class H insulated motor assembly.
• Two-pole 13 kW motor operating at 2973 rpm delivers the high-velocity discharge needed for sewage transfer.
• Standardized DN 100 inlet and outlet ports allow for simplified integration into existing municipal pipework.
• Built-in cooling jacket enables reliable performance in both dry and submerged installation environments.