Grundfos SL.100.150.2.52S.N.51D.A.T Cast Iron 2-Pole Sewage Pump for Sewage Transfer with Open S-Tube Impeller

Cast iron housing and motor shell construction provide the structural foundation for the Grundfos SL.100.150.2.52S.N.51D.A.T submersible pump. This heavy-duty unit addresses the requirements of sewage pumping and municipal networks where contaminated wastewater is present. The system handles liquids with temperatures up to 40°C in both dry and submerged installation environments. Reliable wastewater transfer and effluent pumping are maintained by this assembly in subsurface collection pits and drainage stations.

Hydraulic performance is provided by a 15 kW motor on a 415v three-phase supply, generating a maximum flow of 4,314 L/min. This model achieves a maximum total head of 39.2 m. Operating with a rated current of 29 Amps, the unit maintains consistent torque and circulation characteristics during high-load cycles. Rapid evacuation is achieved through the DN 100 discharge port to protect infrastructure in gravity drainage networks.

Internal centrifugal design utilizes a high-efficiency Open S-Tube impeller to facilitate the passage of solids in suspension. This configuration handles wastewater, maintaining volumetric efficiency throughout prolonged service cycles. By utilizing the s-tube flow principle, the design reduces internal wear and vibration for the rotating assembly during continuous operation. The hydraulic setup facilitates the movement of contaminated fluids through municipal lift stations and drainage pits.

Mechanical stability is reinforced by an IP68 enclosure rating and a double mechanical shaft seal arrangement for motor protection. The primary silicon carbide seal and secondary silicon carbide/carbon seal in an oil bath insulate the motor from liquid ingress. This model features integrated moisture sensors and thermistors for early fault detection in submerged conditions. The architectural casting includes a 273 kg net weight for firm positioning in deep subsurface wastewater infrastructure.

Features

• Open S-Tube impeller design enables the passage of solids through the pump casing without compromising volumetric hydraulic throughput.
• Cast iron construction of the housing and motor shell provides a stable and rigid foundation for permanent site installations.
• Double mechanical shaft seal in an oil bath with silicon carbide faces ensures the motor remains shielded from contamination.
• IP68 protection rating allows for permanent immersion in wastewater collection pits at depths up to 20 metres.
• Integrated thermal protection and moisture sensors facilitate proactive maintenance for the electrical assembly.
• Maximum operating pressure of 8 bar supports integration into large-scale pressurized sewage collection networks.
• Rated speed of 2,966 rpm ensures consistent fluid velocity for high-head wastewater handling applications.