Lowara ZN855-03/2A-3R Stainless Steel 11kW Deep Well 8" Submersible Bore Pump with Semi-Axial Flow Impeller

Hydraulic performance characteristics based on a three-stage assembly with reduced diameter impellers define this 8-inch submersible pump. It provides a robust solution for large-scale water extraction in municipal networks and industrial distribution systems requiring head matching. The pump is compatible with vertical borehole setups and horizontal installations with a 3-degree minimum inclination. This model serves as a specialized tool for lifting groundwater while maintaining precise pressure parameters for irrigation.

The model achieves performance metrics including a maximum head of 69.3 m and delivery rates of 1216 L/Min through the 125 mm outlet. For power, the pump uses an 11 kW motor drawing 24.2 Amps of rated current from a 415v three-phase electrical supply. Efficiency is maintained through precise hydraulic geometry rotating at 2900 rpm for efficient lifting in borehole environments. All technical specifications are verified based on liquids with a density of 1.0 kg/dm³.

Material integrity is ensured through the use of cast AISI 316 Stainless Steel for the pump body, diffusers, and delivery head. This variant is equipped with a Duplex Stainless Steel motor, providing enhanced material performance in aggressive water conditions. The construction handles liquids containing suspended sand levels of 100 g/m³ and is rated for temperatures up to 25°C. A duplex stainless steel shaft is utilized to handle mechanical stresses during rotation.

The unit is rated for an immersion depth limit of 350 meters and maintains a maximum overall diameter of 198 mm including cable covers. A built-in non-return valve with a stainless steel spring is situated in the delivery head to prevent backflow and reverse rotation. Internal tolerances are managed by technopolymer POM-C wear rings and EPDM 70 bearing bushes supporting the shaft alignment. This electric pump is designed for continuous duty cycles in municipal infrastructure.

Features

• Internal technopolymer POM-C wear rings maintain hydraulic clearances and reduce internal friction.
• A duplex stainless steel taperlock system secures the impellers to the shaft for torque transfer.
• The integrated non-return valve features a stainless steel spring to prevent fluid backflow.
• Stainless steel cable covers provide mechanical protection for motor power leads along the casing.
• Mechanical connection of the 8-inch motor follows NEMA standards for industrial system compatibility.
• A stainless steel suction strainer excludes large particles from entering the hydraulic stages.
• EPDM 70 bearing bushes support the pump shaft assembly and handle mechanical loads during rotation.