Vertical Multistage Pump 400 L/min 44.2m — Pentax SV-SL-SLX U18-400/4T
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HIGH-EFFICIENCY STAINLESS HYDRAULICS: Features a 4-stage vertical hydraulic assembly with AISI 304 stainless steel impellers, diffusers, shell, and shaft delivering clean water flow up to 400 L/min (24 m³/h) with a max head of 44.2 meters (4.42 bar).
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OPTIMIZED ENERGY SAVINGS: Advanced multi-stage stainless steel impellers divide hydraulic pressure build-up across 4 stages, maximizing output while reducing electrical power draw on 3 kW three-phase systems.
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HIGH-TEMPERATURE TOLERANCE (UP TO 110°C): Capable of handling demanding liquid conditions ranging from +5°C to +90°C (SV version) and -15°C to +110°C (SL and SLX versions) for hot water heating, Plants, and glycol circulation.
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VERSATILE MATERIAL & PORT OPTIONS: Available in cast iron body with overlapping ports (SV), cast iron body with in-line ports (SL), or 100% full stainless steel AISI 304 body (SLX) for maximum hygienic and corrosion-resistant operation.
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CONVENIENT 400V THREE-PHASE WITH THERMAL PROTECTION: Runs on standard three-phase power with built-in motor thermal overload protection, food-grade EPDM gaskets, ceramic-graphite-EPDM seals, and ceramic-tungsten carbide shaft guiding bushes.
Product information
The Pentax ULTRA SV-SL-SLX Series (models U18SV-400/4T, U18SL-400/4T, and U18SLX-400/4T) represents high-performance, three-phase (400V) vertical multistage centrifugal water pumps engineered for demanding pressure boosting, circulation, and water treatment applications. Built with AISI 304 stainless steel impellers, diffusers, outer casing, and motor shaft, these pumps combine maximum energy efficiency with whisper-quiet, heavy-duty durability.
Powered by a 3 kW (4 HP) three-phase motor with integrated thermal protection, this 4-stage series delivers up to 44.2 meters of lift head and a maximum delivery flow of 400 L/min. Its compact vertical design optimizes floor space in mechanical rooms and residential utility closets.
Depending on system needs, the series offers versatile configurations: SV (overlapping ports for compact skids), SL (in-line ports for direct piping), and SLX (full AISI 304 stainless steel body for high hygiene standards). With temperature resistance up to 110°C, EPDM gaskets, and ceramic-tungsten carbide intermediate shaft bushes, the Pentax ULTRA SV-SL-SLX 400/4T series is an exceptional Italian engineering choice.
Note: Suitable for clean non-loaded liquids, drinking water, and glycol water mixtures at operating pressures up to 8 bar (≤ 6 impellers).
Features & Specs
Series / Family ULTRA SV-SL-SLX Series
Three-Phase Model Options U18SV-400/4T (Overlapping, Cast Iron Base) / U18SL-400/4T (In-Line, Cast Iron Base) / U18SLX-400/4T (In-Line, Full AISI 304 Stainless Base)
Pump Type Vertical Multistage Centrifugal Pump
Motor Power 4 HP / 3 kW
Voltage / Frequency 3~ 400V - 50Hz (high-efficiency industrial)
Max Flow Rate (Q max) 400 L/min (24 m³/h)
Max Lift Head (H max) 44.2 meters
Number of Impellers/Stages 4 Stages Impeller / Diffuser / Shaft Material Stainless Steel AISI 304
Outer Shell / Cover Material Stainless Steel AISI 304
Liquid Temperature Range +5°C to 90°C (SV) / -15°C to 110°C (SL/SLX)
Max Operating Pressure 8 bar (for ≤ 6 impellers)
Intermediate Bushing Ceramic-Tungsten Carbide
Mechanical Seal / Gaskets Ceramic-Graphite-EPDM / EPDM
Protection / Insulation Degree IPX4 / Class F Dimensions
Model U18-400/4T Product Dimensions (cm) 63.9 x 15.7 x 17 cm Pump Weight (kg) 19 kg Motor Weight (kg) 17 kg Total Weight (kg) 36 kg