Grundfos SL1.85.150.150.4.52H.N.51D.A.T Cast Iron 4-Pole Wastewater Pump for Buildings with S-Tube Impeller

Intelligently mapped fluid velocity paths allow the SL1.85.150.150.4.52H.N.51D.A.T to project exceptional hydraulic stability under extreme loads. Designed around a massive 150 mm outlet and matching 150 mm inlet, this high-volume submersible wastewater pump is optimized for deep underground car parks and intense industrial sectors moving raw sewage. It thrives under relentless fluid demands, firmly establishing a reliable transfer baseline for municipal facilities.

Governing the fluid chamber is an advanced S-Tube impeller meticulously calibrated to ensure a permanent 85 mm free passage. This spacious clearance permits dense commercial sludge and fibrous debris to pass unrestricted. By actively preventing suspended heavy solids from accumulating inside the volute, the extraction infrastructure consistently maintains perfect flow purity across the pressurized commercial network.

Commanding this motion is an incredibly durable 15 kW continuous-duty Grundfos 4-pole motor. Operating strictly on a 415v three-phase grid, this powerhouse reliably pushes a maximum head of approximately 25 m alongside a vast 4986 L/Min peak flow rate. The integrated configuration absorbs and dissipates extreme thermodynamic heat loads smoothly across the rugged iron exterior, preventing the internal drive assembly from stalling under duress.

Proactively shielding against mechanical failure, the core framework relies on integrated moisture switches and advanced motor-protection thermistors. These safety layers relentlessly monitor the sealed cavity climate, executing an immediate reactive defense protocol if unwanted liquids breach the casing. This continuous native oversight radically extends the functional lifespan of the unit.

Features

• Equipped with a modular quick release cable entry plug that effectively allows the heavy-duty fifteen-meter power cord to be securely detached without unbolting the motor top.
• Incorporates a highly service-friendly double shaft seal structured in an exclusive cartridge layout to permit rapid field replacements without specialized mechanical tools.
• Constructed with a primary pump volute and upper motor casing cast completely from EN 1561 EN-GJL-250 grade iron for optimal submerged environmental resilience.
• Engineered with a highly reliable secondary shaft seal utilizing an advanced silicon carbide and carbon mechanical friction material block to permanently stop moisture leaks.
• Fully rated to handle relentless extraction operations in dense liquid temperature ranges spanning from ten to forty degrees Celsius within completely flooded installations.
• Configured to handle extreme fluid transfers securely at a maximum installation depth of twenty meters while safely maintaining a strict eight bar maximum operating pressure.