Grundfos SE.100.220.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Sewage Transfer with Open S-Tube Impeller

Operational efficiency in large-scale municipal complexes is maintained by specialized hydraulic units designed for high-capacity liquid management in dry or submerged installations. The SE.100.220.4.52H.N.51D.A.T ensures circulation stability for effluent management and sewage transfer where fluid temperatures reach 40 degrees Celsius. Maintaining structural integrity during continuous duty is necessary for drainage stations and collection networks. This unit supports municipal infrastructure protection across varying liquid levels in deep collection pits.

Hydraulic behavior is driven by a 22 kW four-pole motor operating on a 415v three-phase supply with a rated current of 43 Amps. This assembly generates a maximum flow of 8640 L/Min and achieves a maximum head of 33.3 m. The motor utilizes a star-delta starting method to ensure hydraulic stability and manage activation loads during initial cycles. Consistent pressure behavior at 1476 rpm ensures the system satisfies the requirements of large-scale wastewater handling.

Internal centrifugal design utilizes an Open S-Tube impeller to facilitate the passage of solids in suspension without internal contact. This configuration handles particles through the housing, preventing the internal clogging that compromises volumetric efficiency over long-term service. By utilizing a high-efficiency hydraulic design, the unit reduces internal wear and vibration for the rotating assembly during continuous operation. The Open S-Tube setup is intended for high-volume liquid handling where reliable flow behavior is necessary.

Mechanical construction features a heavy-duty cast iron housing and motor shell with an IP68 protection rating for depths up to 20 m. Longevity is anchored by a double mechanical shaft seal featuring silicon carbide faces and an oil bath for motor insulation. This model includes internal thermistors and moisture sensors to facilitate monitoring of the Class H insulation motor assembly. The architectural casting features a 356 kg net weight and DN 150 inlet with DN 100 outlet connections for high-capacity integration into standardized wastewater infrastructure.

Features

• Open S-Tube impeller configuration facilitates high-efficiency liquid handling and prevents internal blockages in municipal networks.
• Heavy-duty cast iron housing and motor shell provide the structural durability needed for permanent installations up to 20 m deep.
• Double mechanical shaft seal featuring silicon carbide faces in an oil bath ensures the 22 kW motor remains shielded.
• IP68 protection rating confirms the unit is suitable for continuous duty in submerged environments up to 20 m deep.
• Integrated thermistors and moisture sensors enable real-time monitoring to safeguard the Class H insulated motor assembly.
• Four-pole motor operating at 1476 rpm provides the starting torque required for high-volume wastewater collection and transfer.
• DN 150 inlet and DN 100 outlet connections are sized for high-capacity liquid transfer through standardized pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.