Grundfos SE.100.185.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Wastewater with Open S-Tube Impeller

Environmental demands in large-scale municipal complexes require specialized hydraulic solutions for efficient effluent management and wastewater collection. The SE.100.185.4.52H.N.51D.A.T handles contaminated liquids in subsurface pits where reliable solids passage is required for system maintenance. This four-pole pump maintains stable performance at temperatures up to 40 degrees Celsius in drainage stations and lift stations. Maintaining operational flow behavior in dry or submerged installations is essential for infrastructure protection.

Hydraulic capacity is driven by an 18.5 kW four-pole motor operating on a 415v three-phase supply with a rated current of 39 Amps. This assembly generates a maximum flow of 7980 L/Min and reaches a maximum head of 29 m for high-volume wastewater transfer. The motor operates at a rated speed of 1479 rpm, providing the starting torque and hydraulic stability necessary for processing fluids in municipal networks. Power is distributed through a 15-metre power cable to support integration into subsurface drainage networks.

Internal fluid velocity 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 long-term service in collection pits. By utilizing a high-efficiency hydraulic design, the unit minimizes internal wear and vibration for the rotating assembly during high-volume discharge. The Open S-Tube setup is intended for high-capacity wastewater transfer where consistent flow behavior is required.

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 proactive monitoring of the Class H insulation motor assembly. The architectural casting features a 372 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 the passage of solids through the pump housing to maintain hydraulic throughput.
• Heavy-duty cast iron housing and motor shell provide the structural rigidity required for permanent installations up to 20 m deep.
• Double mechanical shaft seal utilizing 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.
• Four-pole motor configuration operating at 1479 rpm provides the hydraulic torque needed for processing high-volume wastewater.
• Standardized DN 150 inlet and DN 100 outlet connections are sized for high-capacity liquid transfer through municipal pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.