Model 188 Effluent Pump

Product Details

The Model 188 effluent pump is part of Zoeller’s High Head Flow Mate Series, specifically engineered for applications where long force mains, STEP systems, or high pumping pressures demand exceptional performance and durability. Constructed with a rugged cast iron pump housing and motor shell, the 188 is built to withstand abrasive and corrosive wastewater environments typical of engineered septic and commercial effluent systems.

Powered by a 1-1/2 HP oil filled PSC or 3 phase motor, the Model 188 benefits from superior thermal dissipation, enabling it to operate reliably during extended or continuous pumping cycles. The motor includes an automatic reset thermal overload (single phase models), ensuring additional protection in fluctuating conditions. Its non clogging cast iron vortex impeller passes up to 3/4 inch spherical solids, reducing service interruptions caused by debris accumulation and maintaining consistent flow in high pressure effluent networks.

The Model 188 is available in both automatic and nonautomatic configurations, providing flexibility for installers designing custom dosing cycles or integrating the pump into engineered control systems. Automatic models feature fixed float actuation points for predictable cycling. The automatic versions are not recommended for septic tank effluent applications, while nonautomatic versions are and pair with external variable level float switches or control panels, allowing precise control tailored to basin dimensions and dosing requirements. For applications requiring enhanced motor protection, the double seal configuration (4188) introduces a secondary mechanical seal, offering additional defense against seal failure in harsh or aggressive effluent environments.

With performance capabilities reaching 91 feet of head and 145 gallons per minute, the Model 188 delivers the strength required for long run pressure systems and advanced treatment applications. Each unit is 100% factory tested to its published performance curve and supported by Zoeller’s warranty standards, ensuring dependable, long term service.

Features and Benefits

• Oil-filled motor and cast iron motor housing for optimal heat dissipation which prevents the pump from overheating
• Automatic models provide fixed float activation points for consistent dosing cycles, while nonautomatic models integrate with external float systems or engineered control panels—allowing installers to tailor pump cycling to basin size, hydraulic demand, and system design
• Corrosion resistant cast iron vortex impeller to allow free passage of 3/4" spherical solids which prevents clogging and increases reliability
• Automatic units include protected float mechanisms; nonautomatic versions require external float controls for proper pump activation
• Automatic single‑phase models include float switches; nonautomatic and all 3‑phase versions require control panels or piggyback float systems
• Powder-coated epoxy finish provides corrosion-resistance and extends the life of the pump in harsh environments
• Stainless steel screws, handle, and hardware to prevent rust and corrosion
• 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