Pentax DTRT 550 Grinder Submersible Pump (3∼400/415V) Heavy-duty, three-phase submersible grinder sewage pump engineered for high-head, industrial, and commercial wastewater applications. Key Features: Grinder/Cutter: Integrated cutter/grinder impeller ensures anti-clog performance by reliably handling fibrous and suspended solids. Power: 5.5 HP (4.0 kW) motor, suitable for 400−415V (3-phase) systems. High Head: Designed for high-lift installations; flow up to ∼300 L/min with maximum head around 36−38 m. Construction: Robust cast-iron body and impeller; AISI 304 stainless steel shaft. Durability: Double mechanical seal in an oil chamber (silicon carbide on pump side) for extended submerged service life. Discharge: Flanged DN50 discharge (UNI PN10), ideal for long delivery mains. Protection: IP68/IPX8 rated, with maximum immersion depth up to 20 m. Applications: Industrial sumps, sewage lift stations, septic tanks, and heavy-duty flood drainage requiring reliable solids reduction and high-lift pumping.