Lowara 1HM11S05T Multistage Centrifugal Pump for Water Transfer with Stainless Steel Impeller

Achieving stable water pressure across multi-storey domestic layouts depends on reliable, consistent fluid delivery. The Lowara 1HM11S05T offers a precise solution for residential and light industrial systems requiring continuous clean water transfer. Its horizontal alignment ensures simplified integration into existing pipework, while the high-precision internal geometry maintains pressure consistency even under varying demand cycles. Whether serving multi-point irrigation networks or providing the required lift for elevated facility supply, this unit provides a stable hydraulic output that minimises fluctuations during peak operation hours.

Operational threshold limits are defined by a Max Head of 64.5 m alongside a Max Flow of 40 L/Min. The electric drive configuration utilizes 0.68 kW / 415v three-phase power to achieve these performance parameters. By utilizing an IE3 efficiency rated motor, the pump reduces unnecessary energy expenditure during sustained runtime, making it a viable candidate for cooling loops and process water handling where operational economy is critical. The hydraulics are calibrated to handle these flows within a temperature range spanning -10°C to +120°C, providing versatility for various temperate liquid movement applications.

Fluid dynamics are governed by a multistage impeller arrangement crafted entirely from AISI 304 stainless steel. This series architecture allows the pump to generate significant pressure increments through successive stages, ensuring that fluid volume remains steady even when working against elevated delivery heads. The internal flow path is designed for minimal turbulence, reducing localized friction and contributing to a lower acoustic signature during standard operation. By combining serial stage compression with high-grade steel components, the assembly manages internal stresses effectively, facilitating consistent performance across its entire operational envelope.

Housing the entire assembly is a rigid AISI 304 stainless steel casing, engineered to resist environmental degradation and maintain structural integrity under continuous load. The unit includes a TEFC 2-pole asynchronous motor protected by an IP55 ingress rating, shielded against dust ingress and low-pressure water streams. Mechanical sealing utilizes advanced materials to ensure hermetic separation between the pumped medium and the motor drive. The mounting base is designed for secure, vibration-dampened installation onto standard concrete or metallic plinths, supporting the 12 kg dry weight during prolonged, fixed-position service periods.

Features:

• Integrated 2-pole squirrel-cage motor with IE3 energy efficiency rating
• AISI 304 stainless steel fluid-contact housing for long-term corrosion resistance
• Suitable for high-temperature clean liquid transfer up to 120°C
• Class 155 (F) insulation system for enhanced thermal management
• Compact close-coupled design for installation in restricted space environments
• Certified for drinking water compatibility under WRAS and ACS standards