Grundfos SE.100.170.2.52S.N.51D.A.T Cast Iron 2-Pole Sewage Pump for Effluent with Open S-Tube Impeller

Civil infrastructure maintenance requires specialized subsurface equipment capable of handling liquid ingress in permanent submerged environments. The Grundfos SE.100.170.2.52S.N.51D.A.T establishes circulation stability for effluent management and sewage transfer in environments where fluid temperatures reach 40 degrees Celsius. Maintaining structural integrity during continuous duty is necessary for drainage stations and treatment plant transfer duties. This unit supports municipal infrastructure protection across varying liquid levels in deep collection pits.

Hydraulic capacity is driven by a 17 kW motor operating on a 415v three-phase supply with a rated current of 33 Amps. This assembly generates a maximum flow of 4500 L/Min and reaches a maximum head of 43.2 m. The motor utilizes a star-delta starting method to manage peak electrical loads and ensure torque stability during initial activation cycles. Operating at a rated speed of 2969 rpm, the unit ensures consistent discharge behavior for large-scale liquid optimization duties.

Internal fluid paths utilize an Open S-Tube impeller designed for the centrifugal movement of liquids without internal clogging or contact. This configuration allows for the passage of solids through the housing to maintain volumetric efficiency over thousands of service hours in municipal networks. By utilizing a high-efficiency hydraulic design, the unit minimizes internal friction and vibration to protect the rotating assembly during high-head discharge. The Open S-Tube setup is intended for high-volume wastewater transfer where reliable flow behavior is required.

Construction utilizes heavy-duty cast iron for the pump housing and motor shell with an IP68 protection rating for immersion up to 20 m. Longevity is anchored by a silicon carbide primary shaft seal and a silicon carbide/carbon secondary seal in an oil bath for motor protection. This model includes integrated thermistors and moisture sensors to facilitate proactive monitoring of the Class H insulation motor assembly. The architectural casting includes a 304 kg net weight and DN 100 connections for 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 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 2969 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.