1450 RPM Single-Channel Dirty Water Sump Pump 1400l/min 9.6m — Pentax DMT 250-4
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HIGH-CAPACITY INDUSTRIAL EFFICIENCY: Moves a massive water volume up to 1400 L/min (84 m³/h) with a maximum pressure head of 9.6 meters, rapidly clearing sewage pits, civil sumps, and flooded industrial areas.
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RELIABLE THREE-PHASE POWER: Engineered for 400V three-phase industrial power grids, ensuring consistent performance and optimized energy savings during continuous heavy-duty operations.
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EXTRA-LARGE 60 MM SOLID PASSAGE: Equipped with a solid cast iron single-channel impeller that allows suspended solids up to 60 mm in diameter to pass through smoothly without clogging.
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EXTREME 20-METER SUBMERSION DEPTH: Built for extreme underwater conditions with a heavy-duty cataphoresis-painted cast iron body, supporting continuous duty submerged down to 20 meters deep.
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PRO-GRADE OIL-BARRIER DOUBLE SEAL: Features a double mechanical seal with an oil barrier (silicon carbide on pump side, ceramic-graphite on motor side) and an AISI 304 stainless steel shaft for total motor protection (IPX8 waterproof rating).
DIRTY WATER PUMP: The Pentax DMT 250-4 is a cast iron single-channel impeller submersible dirty water pump, built for pumping dirty water, muddy water, wastewater and sewage from pits, sumps, tanks and flooded areas. This dirty water transfer pump handles suspended solids and charged liquids, making it the right pump for dirty water in heavy-duty civil and industrial applications. The DMT 250-4 also works as a sump pump for basement drainage, sump pits, cellars and garages prone to flooding.
Product information
The Pentax DMT 250-4 is a heavy-duty Italian submersible sewage pump specifically engineered for civil, industrial, and agricultural heavy use. Built with a solid cataphoresis-coated cast iron pump body and cast iron single-channel impeller, it provides extreme durability and corrosion resistance for continuous underwater service down to 20 meters.
Unlike standard drainage pumps, the DMT 250-4 utilizes a specialized 4-pole single-channel impeller. This low-speed hydraulic design combines high energy efficiency with an extra-large 60 mm (2.4-inch) free solid passage, allowing raw sewage, grey water, and black water with thick solids to move through without clogging. Driven by a robust 1.8 kW (2.5 HP) three-phase motor running at 1450 RPM, it delivers an enormous flow rate up to 1400 L/min.
Designed for maximum reliability under tough conditions, the pump incorporates an oil-barrier double mechanical seal (silicon carbide / ceramic-graphite), A2 stainless steel bolts, NBR gaskets, a galvanized iron foot support, and an AISI 304 stainless steel shaft. Complete with a 10-meter H07 RN8F power cable, the Pentax DMT 250-4 is the ultimate high-capacity pump for heavy-duty civil and commercial sewage systems.
Note: Suitable for clean water, grey water, and black water with suspended solids up to Ø max 60 mm at liquid temperatures from 0°C to +40°C.
Features & Specs
Product Model DMT 250-4 (Three-Phase, 4-Pole 1450 RPM) - Heavy-Duty Submersible Sewage Pump
Ideal Application Industrial wastewater, civil sewage, flooded basements, and heavy drainage
Motor Power 2.5 HP / 1.8 kW - High-Efficiency Copper Wound Motor Power Supply 3-Phase 400V - 50Hz (Industrial Power)
Max Flow Rate (Capacity) 1400 L/min (84 m³/h) - Rapid water removal
Max Lift Head 9.6 meters (31 ft) - Excellent vertical pumping power Max Submersion Depth 20 meters (65 ft) - Deep well and sump ready Solid Waste Handling Passes debris up to Ø 60 mm (2.4 inches) without clogging
Construction & Build Rugged Cast Iron with Anti-Rust Cataphoresis Coating
Sealing System Double Mechanical Seal with Oil Chamber for ultimate motor protection
Shaft Material Premium AISI 304 Stainless Steel
Discharge Outlet (DNM) DN 100 (4 inches) Safety & Protection IPX8 Waterproof Rating / Class F Thermal Insulation Power Cable 10 meters (33 ft) Professional-Grade H07 RN8F Cable
Codes
DMT 250-4Dimensions
- Dimensions (mm): Ct: 660 | Ht: 165 | R: 160 | It: 235 | mt: 300 | Mt: 614
- Discharge Outlet (DNM): 100
- Weight: 71.5 Kg

