Lowara 1HM12S05T Stainless Steel Space-Saving Multistage Centrifugal Pump for Irrigation with Closed Impeller

The Lowara 1HM12S05T provides efficient and reliable pumping performance. Achieving stable water pressure across multi-storey residential and light industrial layouts depends on the precise, consistent hydraulics found in this horizontal multistage assembly. Managing clean liquid transfer from source reservoirs into distribution manifolds requires a balance of force and steady flow velocity. Specifically configured for 25mm pipework, the design provides an effective solution for irrigation and process water supply where space-saving mechanical integration is a requirement. The horizontal orientation ensures that suction conditions remain favorable for lift operations in diverse site conditions, effectively preventing air pockets during start-up.

Operational threshold limits are defined by a Max Head 70 m alongside a Max Flow 40 L/Min. This configuration utilizes a 0.55 kW / 415v motor, engineered for efficiency and low-vibration rotation. Through the integration of standardized hydraulic staging, the assembly maintains consistent output pressure even under fluctuating demand, ensuring the network remains balanced without excessive energy expenditure during peak operation cycles.

Fluid dynamics are governed by a multistage arrangement, where energy transfer is managed via an AISI 304 stainless steel impeller configuration. This metallic design choice minimizes frictional losses between stages, allowing the fluid to traverse the pump casing with high laminar consistency. The close-coupled sequence ensures that each stage contributes incrementally to the overall pressure gain, resulting in a streamlined path from the 25mm suction inlet through to the discharge port, providing stable head performance even when handling restricted or sensitive circulation loops.

Protection of the motor and internal components is provided by a robust TEFC, 2-pole asynchronous motor rated to IP55 standards, suitable for ambient environments reaching 50°C. The exterior chassis, constructed from AISI 304 stainless steel, provides resistance against environmental stressors commonly found in indoor or shielded plant rooms. An insulation class 155 (F) rating ensures long-term operational viability under thermal load. The assembly mounts easily via the integrated base plate, facilitating simple alignment with pre-existing suction and delivery piping configurations.

Features:

• IE3 motor efficiency rating for reduced energy consumption
• WRAS and ACS certifications for drinking water safety
• Equipped with silicon carbide mechanical seal surfaces
• PPS technopolymer wear rings for stage isolation
• Suitable for ambient temperatures up to 50°C
• Asynchronous 2-pole squirrel-cage motor configuration