Grundfos SE1.110.200.185.4.52M.N.51D.A.T Cast Iron Sewage Pump for Sewage Transfer with S-Tube Impeller

Heavy-duty cast iron housing casting and rigid structural foundations define the SE1.110.200.185.4.52M.N.51D.A.T as a reliable asset for municipal sewage handling. This assembly is built for intensive duty in large collection complexes, handling contaminated fluids within a liquid temperature range of 10°C to 40°C. Maintaining consistent throughput is critical for treatment plants and drainage stations prone to significant fluid ingress. This unit addresses the need for durable liquid movement in subsurface pits where performance must remain stable across an ambient temperature range of -20°C to 40°C.

Technical performance is delivered by an 18.5 kW four-pole motor operating on a 415v three-phase supply with a rated current of 37 Amps. The system achieves a maximum flow of 7500 L/min and reaches a maximum head of 21 m for efficient evacuation of municipal sewage and industrial effluent. Starting is managed via a star-delta method to protect the electrical assembly, while the 1479 rpm rated speed ensures steady torque during high-load evacuation. A 15-metre power cable is provided to facilitate deployment in deep collection pits and large-scale wastewater networks.

Internal hydraulics utilize a high-efficiency S-TUBE impeller designed to facilitate the passage of solids up to 110 mm without internal contact. This specialized configuration offers high efficiency and significantly reduces the risk of blockages during intensive sewage pumping cycles. By enabling the free passage of suspended solids through the housing, the unit maintains volumetric throughput during prolonged operation. The S-TUBE impeller is engineered for municipal wastewater transfer where durability is a priority for infrastructure maintenance and system reliability.

Mechanical integrity is reinforced by a heavy-duty cast iron housing with an IP68 protection rating for depths up to 20 m. Reliability is anchored by a double mechanical shaft seal with silicon carbide faces in an oil bath to shield the motor from liquid ingress. The assembly includes integrated thermistors and moisture sensors to monitor the Class H insulated motor assembly in aggressive environments. Standard DN 200 inlet and DN 200 outlet connections ensure compatibility with high-capacity municipal pipework and standardized civil drainage systems.

Features

• S-TUBE impeller design enables the passage of solids up to 110 mm with significant resistance to internal clogging.
• Heavy-duty cast iron housing and motor shell provide the structural durability required for deep submerged installations.
• Double mechanical shaft seal utilizing silicon carbide faces ensures the 18.5 kW motor remains shielded from ingress.
• Internal moisture sensors and thermistors provide monitoring to safeguard the Class H insulated motor assembly.
• Four-pole motor configuration operating at 1479 rpm provides the torque needed for high-volume sewage handling.
• DN 200 inlet and DN 200 outlet ports allow for standardized integration into municipal wastewater pipework.
• Built-in cooling jacket enables reliable performance in both dry and submerged installation environments.