Model 661 Sewage Pump

Product Details

The Zoeller Model 661 is part of the 600 Series, a family of solids‑handling sewage pumps engineered for rigorous commercial and industrial wastewater applications. Designed around a robust oil‑filled, continuous‑duty motor, the Model 661 offers excellent thermal management and durability in harsh environments where frequent cycling, high solids content, and sustained run times are common. With the ability to reach 63 feet of head and 590 GPM.

The pump features a semi‑open vortex impeller capable of handling up to 2.5‑inch spherical solids, making it well‑suited for lift stations, treatment plants, and other installations where clog resistance is critical. Engineered for long life, the Model 661 is constructed with cast‑iron motor and pump housings, stainless‑steel hardware, and corrosion‑resistant powder‑coated epoxy finishes.

As a nonautomatic pump, the Model 661 integrates into engineered control systems using float switches, level transducers, or PLC‑based controls. This flexibility makes it ideal for simplex, duplex, or multiplex lift stations where operators require custom control logic or automated monitoring.

Each Model 661 unit is 100% factory tested, ensuring that every pump meets published head and flow performance prior to installation. For high‑demand wastewater environments, the Model 661 delivers the reliability and durability expected of Zoeller’s heavy‑duty sewage systems.

Features and Benefits

• Oil-filled motor and cast iron motor housing for optimal heat dissipation which prevents the pump from overheating
• Nonautomatic pump and requires either a panel‑based control system or external level controls to manage on/off operation—ideal for engineered commercial systems
• Features a semi‑open vortex impeller capable of passing 2.5" spherical solids (3" or 4" discharge configurations), ensuring clog‑resistant performance in solids‑laden wastewater
• Stainless steel screws, handle, and hardware to prevent rust and corrosion
• Powder-coated epoxy finish provides corrosion-resistance and extends the life of the pump in harsh environments
• 100% Factory Tested - every pump is submerged in water and tested at the factory to ensure that it performs as expected when you receive it
• Comes with a 1-year limited warranty giving you protection over your investment and the peace of mind you expect in a quality product

Product Specifications