Description
The Allegro 9404‑04 Sludge Dewatering Pump is a portable, submersible pump engineered for removing standing water, sludge, and debris‑laden liquid from manholes, vaults, construction sites, wastewater areas, and other confined spaces. Powered by a 1/2 HP single‑phase motor, it delivers up to 50 gallons per minute and operates efficiently at depths up to 39 feet, making it ideal for site drainage and effluent transfer tasks where reliable dewatering is needed.
Designed for continuous operation even at low water levels, the 9404‑04 offers top discharging performance, extended dry‑run tolerance, and easy hookup for rapid deployment in industrial, construction, municipal, and residential applications.
Key Features
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Motor: 1/2 HP, 115 V AC single‑phase with capacitor start.
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Flow Rate: Up to ~50 GPM (gallons per minute).
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Submersible Depth: Up to ~39 feet with continuous operation down to ~3.5″ water level.
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Impeller: Semi‑vortex urethane rubber with agitator for solids handling.
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Protection: Thermal and amperage sensing protector reduces risk of overload/run‑dry damage.
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Construction: Ductile cast iron body, stainless steel shaft, and durable mechanical seals.
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Connections: 2″ discharge with fire hose‑style quick‑connect fittings.
Typical Applications
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Dewatering manholes, vaults, trenches, and pits, Construction site drainage, Industrial wastewater management, Effluent transfer and water removal




