Little Giant 621815 BE-S50 Effluent Pump – 1/2 HP Cast Iron, 115/230V, Non-Clog Impeller, Self-Priming, 1/4" Solids, Septic & Wastewater Transfer

Little Giant 621815 BW-S50 Effluent Pump | BE Series 1/2 HP, 115/230V

When it comes to moving effluent and wastewater reliably, the Little Giant 621815 BW-S50 Effluent Pump from the BE Series is built to perform. Designed for demanding applications such as dewatering, livestock watering, flood irrigation, and pumping septic tanks to a leach field, this 1/2 HP surface effluent pump offers high efficiency, rugged durability, and low maintenance operation.

This model was previously branded as the Monarch Industries BE-S50. The Little Giant BW-S50 maintains the same trusted performance and specifications, now under the Franklin Electric / Little Giant brand name.

The pump’s rigid cast-iron construction ensures long life in tough conditions, while the non-clog impeller easily handles up to 1/4" solids. Equipped with a self-priming dual-compartment motor and a built-in check valve, this Little Giant effluent pump provides consistent pressure and dependable performance.

Key Features & Benefits:

• Rebranded from Monarch BE-S50 – Same performance, new Little Giant branding

• Powerful 1/2 HP motor – Dual-compartment, higher-than-NEMA service factor motor for long-lasting performance

• Self-priming operation – Ensures reliable startup and continuous duty capability

• Built-in check valve – Maintains pressure and provides backup protection

• Handles 1/4" solids – Non-clog impeller for wastewater and effluent applications

• Durable cast-iron body – Corrosion-resistant design for demanding environments

• Versatile discharge – 1-1/4" (31.75 mm) NPT discharge connection

Common Applications:

• Effluent transfer from septic tanks to leach fields

• Flood irrigation and dewatering projects

• Livestock watering systems

• General wastewater handling

Reliable Wastewater & Effluent Pumping Power

The Little Giant BW-S50 BE Series Effluent Pump continues the legacy of the Monarch Industries BE-S50, delivering dependable, efficient, and low-maintenance performance for effluent and wastewater applications. Backed by Franklin Electric’s Little Giant brand, this pump provides consistent results in even the most demanding conditions.