Grundfos SE.100.220.2.52S.N.51D.A.T Cast Iron 2-Pole Sewage Pump for Municipal Sewage with Open S-Tube Impeller

Large-scale facility maintenance requires the reliable movement of wastewater in permanent submerged environments. The Grundfos SE.100.220.2.52S.N.51D.A.T provides the hydraulic capacity necessary for heavy-duty effluent transfer where fluid temperatures reach 40 degrees Celsius. Maintaining circulation integrity during intensive duty cycles is necessary for drainage stations and municipal lift stations. This unit supports continuous service in gravity drainage networks prone to varying liquid levels.

Hydraulic performance is provided by a 22 kW two-pole motor on a 415v three-phase supply, generating a maximum flow of 4986 L/Min and a maximum head of 52.7 m. Operating with a rated current of 41 Amps at 2963 rpm, the unit maintains consistent torque and hydraulic stability during high-load duty cycles. A star-delta starting method is utilized to optimize electrical consumption and manage start-up loads in deep-pit applications. Electrical distribution is established via a 15-metre power cable to facilitate deployment in subsurface networks.

Internal centrifugal design utilizes an Open S-Tube impeller to facilitate the passage of solids in suspension without internal contact or clogging. This configuration maintains volumetric efficiency throughout prolonged service cycles in municipal and industrial collection pits. By utilizing a high-efficiency hydraulic design, the unit reduces internal wear and vibration for the rotating assembly during high-head discharge. The Open S-Tube setup is intended for high-volume liquid handling where reliable flow behavior is necessary for infrastructure protection.

Mechanical construction features a heavy-duty cast iron body and motor shell with an IP68 protection rating for depths up to 20 m. Longevity is anchored by a double mechanical shaft seal arrangement featuring silicon carbide faces in an oil bath for motor insulation. This model includes integrated thermistors and moisture sensors to facilitate monitoring of the Class H insulation motor assembly. The architectural casting includes a 322 kg net weight and DN 100 connections for integration into standard municipal wastewater collection systems.

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 submerged installations up to 20 m deep.
• Double mechanical shaft seal featuring silicon carbide faces in an oil bath ensures the motor remains shielded from liquid ingress.
• 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.
• Two-pole motor operating at 2963 rpm provides the high-velocity discharge required for wastewater collection systems.
• Standardized DN 100 inlet and DN 100 outlet connections allow for seamless integration into municipal wastewater pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.