Grundfos SE.150.185.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Lift Stations with Open S-Tube Impeller

Managing high-volume fluid optimization in deep municipal collection pits requires structural foundations capable of handling continuous liquid ingress in dry or submerged environments. The SE.150.185.4.52H.N.51D.A.T pump addresses these environmental demands by providing a solution for effluent transfer where fluid temperatures range between -10 and 40 degrees Celsius. Maintaining hydraulic integrity during permanent installation is necessary for drainage stations and sewage collection duties. Subsurface civil works rely on this assembly for infrastructure protection across civil drainage networks.

Hydraulic capacity is driven by an 18.5 kW four-pole motor on a 415v three-phase supply, generating a maximum flow of 7980 L/Min and a maximum head of 29 m. Operating with a rated current of 39 Amps at 1479 rpm, the unit maintains consistent torque and hydraulic stability throughout the service cycle. A star-delta starting method is utilized to manage peak electrical loads during initial activation in municipal lift stations. Power is distributed via a 15-metre power cable to facilitate deployment in subsurface wastewater handling networks.

Internal fluid velocity paths utilize an Open S-Tube impeller configuration designed for the movement of solids in suspension without internal contact. This centrifugal setup facilitates the free passage of particles through the housing, preventing the internal clogging that could compromise volumetric throughput during prolonged service. By utilizing the Open S-Tube principle, the unit minimizes friction and vibration to protect the rotating assembly during high-volume discharge. The hydraulic configuration is intended for wastewater transfer where reliable flow behavior is necessary.

Mechanical construction features a heavy-duty cast iron body and motor shell with an IP68 protection rating for depths up to 20 m. Longevity is anchored by a double mechanical shaft seal arrangement featuring silicon carbide faces in 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 360 kg net weight and DN 150 ports for integration into standardized municipal wastewater infrastructure.

Features

• Open S-Tube impeller design enables the passage of solids through the pump casing without compromising hydraulic throughput.
• Cast iron pump housing and motor shell provide the structural durability needed for permanent installations.
• 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 operating at 1479 rpm provides the torque required for high-volume wastewater collection and transfer.
• Standardized DN 150 inlet and DN 150 outlet connections allow for high-capacity liquid transfer through municipal pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.