Grundfos SE.100.200.2.52S.N.51D.A.T Cast Iron 2-Pole Sewage Pump for Wastewater with Open S-Tube Impeller

Thermodynamic behavior and internal fluid velocity paths in municipal collection pits require specialized hydraulic assets built for high ingress rates. The Grundfos SE.100.200.2.52S.N.51D.A.T establishes circulation stability for effluent management and sewage transfer where fluid temperatures reach 40 degrees Celsius. Maintaining structural integrity during permanent immersion is necessary for drainage stations and municipal lift stations. This unit supports continuous service in gravity drainage networks prone to varying liquid levels.

Hydraulic capacity is driven by a 20 kW motor operating on a 415v three-phase supply with a rated current of 37 Amps. This assembly generates a maximum flow of 4914 L/Min and reaches a maximum head of 49.5 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 2968 rpm, the unit ensures consistent discharge behavior in large-scale liquid optimization infrastructure.

Internal fluid paths feature 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 reduces internal wear and vibration for the rotating assembly during high-head discharge. The Open S-Tube setup is intended for high-volume wastewater transfer where reliable solids passage is required.

Mechanical construction features a heavy-duty cast iron housing and motor shell with an IP68 protection rating for immersion 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 integrated thermistors and moisture sensors to facilitate proactive monitoring of the Class H insulation motor assembly. The architectural casting features a 310 kg net weight and DN 100 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 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 2968 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.