U18-400/4T SS Multistage Water Pump 400l/min 45.4m for Agriculture
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HIGH-EFFICIENCY MULTI-STAGE POWER: Features a 4-stage hydraulic design delivering water flow up to 400 L/min and a max lift head of 45.4 meters, ensuring smooth, steady pressure for your water supply needs.
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ULTRA-LOW ENERGY CONSUMPTION: Powered by a highly efficient 3 kW (4 HP) motor that optimizes power draw to deliver high hydraulic output, significantly cutting electricity costs compared to standard single-stage pumps.
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DRINKING WATER & GLYCOL SAFE: Certified and designed for clean, non-loaded liquids, making it ideal for drinking water supply, irrigation, water treatment, heating, air conditioning, and glycol distribution.
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STAINLESS STEEL AISI 304 CONSTRUCTION: Built for clean, rust-free operation with a durable AISI 304 stainless steel pump body and motor shaft, paired with Noryl® impellers and ceramic-graphite-EPDM seals.
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WHISPER-QUIET & RELIABLE: Multi-stage internal impellers break up hydraulic noise for ultra-quiet indoor running. Includes IPX4 waterproofing.
Product information
The Pentax ULTRA U18-400/4T is a high-performance Italian multi-stage horizontal centrifugal electric water pump designed for domestic, agricultural, and industrial applications. Built with a heavy-duty AISI 304 stainless steel casing and shaft, it guarantees clean, rust-free water for drinking supply, pressure boosting, heating, cooling, and garden irrigation systems.
Unlike noisy single-stage jet pumps, the U18-400/4T uses a 4-stage multi-stage design with Noryl® impellers that split the pumping workload. This results in smooth, high-volume water delivery (up to 400 L/min) and maximum pressure (up to 45.4 meters / 8.5 bar max pressure) while drawing only 3 kW (4 HP) of electricity.
Engineered for safety and versatility, the pump handles liquid temperatures from -5°C to +35°C, making it suitable for both cold water supply and glycol cooling systems. Complete with an aluminum motor bracket for quick cooling, ceramic-graphite-EPDM mechanical seals, and integrated thermal protection on single-phase models, the Pentax U18-400/4T is the ideal energy-saving choice for automatic home pressure systems.
Note: Suitable for clean non-loaded fluids, drinking water, and glycol mixtures at temperatures from -5°C to +35°C. Available in WRAS-approved versions.
Features & Specs
Model U18-400/4T
Pump Type Multi-Stage Horizontal Centrifugal Pump
Motor Power 4 HP / 3 kW
Voltage Options 3~ 230/400V-50Hz
Max Flow Rate (Q max) 400 L/min (24 m³/h)
Max Lift Head (H max) 45.4 meters Max Operating Pressure 8.5 bar Liquid Temperature Range -5 °C to +35 °C Pump Body / Shaft Material Stainless Steel AISI 304 / Stainless Steel AISI 303 or 304
Motor Bracket / Impeller Aluminum / Noryl®
Mechanical Seal Ceramic-Graphite-EPDM
Certifications WRAS Approved version available
Protection / Insulation IPX4 / Class F Codes
U18-400/4TDimensions
Product Dimensions: 55.4 x 16.4 x 20.3 cm
Weight: 24 kg

