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SKU: ZN855-04-3R
Lowara ZN855-04-3R Stainless Steel 18.5kW Deep Well 8" Submersible Bore Pump with Semi-Axial Flow Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
Material construction features based on high-grade cast alloys define this four-stage 8-inch submersible electric pump. It provides a solution for large-scale agricultural and industrial water extraction from deep underground sources to surface distribution points. The unit supports vertical well mounting or horizontal deployment in distribution networks where the motor is at the lowest position. This model serves as an efficient tool for municipal water systems and irrigation projects needing high lift.
Technical performance parameters include a maximum head of 107.8 m and peak delivery rates of 1333 L/Min through its its 125 mm discharge outlet. Electrical power is delivered by an 18.5 kW motor drawing 38.5 Amps of rated current from a 415v three-phase supply. Efficiency is maintained at a rotation speed of 2900 rpm through precisely engineered hydraulic geometry. All performance data is validated for liquids with standard density and kinematic viscosity.
The wet end is constructed from cast AISI 316 Stainless Steel for wetted parts including the suction support, delivery casing, and diffusers. This variant features a Duplex Stainless Steel motor, providing durability in aggressive water conditions found in deep wells. The assembly processes water containing suspended sand levels up to 100 g/m³ and is rated for temperatures of 25°C. The internal pump shaft is made of duplex stainless steel to resist mechanical stress during rotation.
The unit is rated for an immersion depth of 350 meters and maintains a maximum overall diameter of 198 mm including motor cable protection covers. A built-in non-return valve with a stainless steel spring protects the internal components from backflow and mechanical surges. Internal wear surfaces are managed by technopolymer POM-C wear rings and EPDM 70 bearing bushes to ensure shaft alignment. The pump is designed for continuous duty cycles in municipal infrastructure.
FEATURES
- 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.
- 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.
- 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 | 107.8 m |
| Power | 18.5 kW / 415v |
| Rated Current | 38.5 Amps |
| Suitable For | Pressure 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.
Can this 18.5 kW / 415v deep-well pump operate on solar-diesel hybrid power setups?
Hybrid energy stations running the ZN855-04-3R must deliver 415V three-phase power to meet its 18.5 kW / 415v rating.
What dynamic pressure head can be sustained across continuous pumping cycles?
Continuous pumping cycles with the ZN855-04-3R maintain steady delivery pressure across its 107.8 m head range.
What maximum pumping delivery rate is supported by this 8-inch hydraulic wet end?
The 8-inch wet end of the ZN855 04 3R delivers an impressive maximum flow output of 1333 L/Min through a 125 mm connection.
What high-grade stainless alloys are incorporated into the pump structure?
High-grade stainless metallurgy in the ZN855_04_3R incorporates cast AISI 316 stainless steel hydraulics and a Duplex Stainless Steel motor for superior chemical resilience.
What maximum submergence depth rating ensures safe operation at 350 m immersion?
Deep water table immersion down to 350 m is standard for the ZN855-04-3R, backed by Class F motor insulation.
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