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SKU: ZN855-05-3S
Lowara ZN855-05-3S Stainless Steel 22kW Deep Well 8" Submersible Bore Pump with Semi-Axial Flow Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
Performance characteristics based on five full-diameter stages characterize this 8-inch submersible pump designed for residential water lifting. It provides consistent pressure distribution for large complexes or livestock stations from a single deep underground borehole source. The assembly is compatible with vertical deep-well installation and horizontal mounting provided a minimum inclination is maintained. This model serves as a dedicated solution for municipal networks and industrial project lifting.
Hydraulic performance is defined by a maximum head of 134.8 m and a delivery capacity scaling up to 1333 L/Min through the 125 mm outlet. The unit is powered by a 22 kW motor drawing 47.3 Amps of rated current from a 415v three-phase electrical supply. Efficiency is achieved through a semi-axial flow design achieving a nominal delivery rate of 55 m³/hr at 2900 rpm. All technical specifications are validated for liquids with standard clean water density.
The structure is fabricated from cast AISI 316 Stainless Steel for the pump body, diffusers, and impellers to handle specific water chemistry. The motor is also made of 316 Stainless Steel and is rated for contact with liquids up to 25°C during continuous service. The assembly processes water containing suspended sand levels reaching 100 g/m³ through its five hydraulic stages. A duplex stainless steel pump shaft is used to handle mechanical torque during operation.
The unit supports immersion depths of 350 meters and features a built-in non-return valve with a stainless steel spring to prevent backflow. Physical dimensions include a 198 mm maximum diameter, fitting within standard 8-inch borehole casings. Internal clearances are maintained by technopolymer POM-C wear rings and EPDM 70 bearing bushes to ensure mechanical alignment and hydraulic performance. The unit is designed for continuous duty cycles in municipal infrastructure.
FEATURES
- Mechanical connection of the 8-inch motor follows NEMA standards for industrial system compatibility.
- Stainless steel cable covers provide mechanical protection for motor power leads along the casing.
- EPDM 70 bearing bushes support the pump shaft assembly and handle mechanical loads during rotation.
- A duplex stainless steel taperlock system secures the impellers to the shaft for torque transfer.
- Internal technopolymer POM-C wear rings maintain hydraulic clearances and reduce internal friction.
- The integrated non-return valve features a stainless steel spring to prevent fluid backflow.
- A stainless steel suction strainer excludes large particles from entering the hydraulic stages.
SPECIFICATIONS
| Max Flow | 1333 L/Min |
| Max Head | 134.8 m |
| Power | 22 kW / 415v |
| Rated Current | 47.3 Amps |
| Suitable For | Household Water Supply |
| Body Material | AISI 316 Stainless Steel |
| Liquid Temperature | Maximum 25°C |
| Outlet Size | 125 mm |
| Warranty | 12 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
What power feed requirements must be met before energizing this 22 kW / 415v pump?
Before startup, the ZN855-05-3S must be connected to a 415V three-phase line matched to its 22 kW / 415v power rating.
What total head capacity ensures effective water delivery from deep bore shafts?
Deep borehole installations operate reliably with the ZN855-05-3S, providing total dynamic head capability of 134.8 m.
How does the discharge port geometry support maximum flow rates up to 1333 L/Min?
Optimized internal fluid passages in the ZN855 05 3S support maximum delivery flow up to 1333 L/Min via a 125 mm port.
Is this bore pump resistant to chemical corrosion caused by mineralized groundwater?
Chemical corrosion caused by mineralized water is repelled by the ZN855_05_3S using its cast AISI 316 stainless steel wet end components and 316 motor construction.
What outer dimensions allow this pump to slide smoothly into 8-inch well casings?
Smooth lowering into 8-inch boreholes is assured by the 198 mm maximum overall diameter of the ZN855-05-3S.
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