Grundfos SE1.75.100.185.2.52S.N.51D.A.T Cast Iron Sewage Pump for Wastewater Handling with S-Tube Impeller

Municipal lift station operation requires high-performance hydraulic assets designed for permanent submerged service in deep collection pits. The Grundfos SE1.75.100.185.2.52S.N.51D.A.T Submersible Wastewater Pump addresses these demands by providing reliable effluent transfer and sewage handling. Operating at temperatures up to 40°C, the system ensures consistent throughput in drainage stations and wastewater collection networks. This unit is intended for civil infrastructure where reliable liquid movement is required for treatment plant duties and facility maintenance.

Hydraulic performance is driven by an 18.5 kW two-pole motor on a 415v three-phase supply, producing a maximum flow of 3186 L/min and a maximum head of 39 m. Operating with a rated current of 35 Amps at 2964 rpm, the unit maintains stable pressure for high-velocity discharge. A star-delta starting method is utilized to manage electrical loads during activation in deep pits. Power is distributed through a 15-metre S1BN8-F power cable to facilitate installation in large-scale municipal complexes and subsurface wastewater networks.

Internal fluid paths utilize a high-efficiency S-TUBE impeller configuration designed for the movement of solids in suspension without internal contact or clogging. This setup allows for the free passage of particles up to 75 mm through the housing, maintaining volumetric throughput during prolonged service. By utilizing the S-TUBE impeller, the assembly provides superior clog resistance compared to traditional hydraulics, ensuring reliable wastewater transfer in intensive municipal service. This design is engineered for grey water and sewage collection where efficiency is a priority.

Mechanical integrity is reinforced by a heavy-duty cast iron housing and an IP68 protection rating for immersion up to 20 m. Motor protection is provided by a double mechanical shaft seal featuring silicon carbide faces in an oil bath for maximum durability. This model includes integrated thermistors and moisture sensors for proactive monitoring of the Class H insulated motor assembly. The unit features DN 100 inlet and outlet ports for high-capacity integration into standardized municipal wastewater and drainage infrastructure.

Features

• Cast iron S-TUBE impeller facilitates efficient liquid handling and prevents blockages in high-volume wastewater networks.
• Heavy-duty cast iron construction of the housing and motor shell provides the durability needed for deep pit installations.
• Double mechanical shaft seal in an oil bath with silicon carbide faces ensures the 18.5 kW motor remains shielded.
• Internal thermistors and moisture sensors provide real-time monitoring to safeguard the Class H insulated motor assembly.
• Two-pole motor operating at 2964 rpm provides the high-velocity discharge required for municipal sewage collection.
• DN 100 inlet and outlet ports allow for standardized liquid transfer through municipal wastewater pipework.
• Integrated cooling jacket supports operational integrity in both dry and submerged mounting configurations.