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SKU: ZN855-05/3A-3R
Lowara ZN855-05/3A-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
Application in high-pressure lifting for groundwater extraction is the primary use for this five-stage 8-inch submersible electric unit. It serves as a solution for deep borehole extraction in industrial water supply projects and municipal distribution networks requiring precise lift. The pump is compatible with vertical installations and horizontal deployment in distribution systems with a minimum inclination. This model is intended for sectors needing large flow capacities from underground aquifers via reduced impeller matching.
Technical performance parameters include a maximum head of 117.5 m and delivery rates scaling up to 1216 L/Min through its its 125 mm discharge outlet. Power is supplied by an 18.5 kW motor drawing 38.5 Amps of rated current from a 415v three-phase supply. Performance is maintained through the hydraulic geometry rotating at 2900 rpm for efficient lifting in borehole environments. All performance data is verified based on clean water with a density of 1.0 kg/dm³.
Construction utilizes high-grade cast AISI 316 Stainless Steel for wetted parts including the suction casing, delivery head, and diffusers. This variant is equipped with a Duplex Stainless Steel motor for resistance in specific water environments encountered in borehole wells. The assembly processes water containing suspended sand levels reaching 100 g/m³ and is rated for temperatures up to 25°C. A duplex stainless steel pump shaft is fabricated to manage the generated torque of five stages.
Rated for immersion depths of 350 meters, the unit features a maximum diameter of 198 mm including cable protection covers. A stainless steel non-return valve with an integrated spring is built into the assembly to prevent reverse rotation and backflow during shutdown. Internal clearance is managed by technopolymer POM-C wear rings and EPDM 70 bearing bushes supporting the shaft assembly. This electric pump is designed for continuous duty cycles in municipal infrastructure.
FEATURES
- 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.
- 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 duplex stainless steel taperlock system secures the impellers to the shaft for torque transfer.
- 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.
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.
How is power supplied to the submerged motor of this 18.5 kW / 415v borehole unit?
Electrical energy is transmitted to the ZN855-05/3A-3R via dual cable covers feeding its 18.5 kW / 415v 415V motor.
What maximum head rating is specified for this deep-well pump?
The ZN855-05-3A-3R has a maximum head rating of 117.5 m.
What volumetric delivery specification applies to this high-capacity bore pump?
Factory flow testing confirms the ZN855 05 3A 3R sustains a maximum delivery output of 1216 L/Min via its 125 mm outlet.
What materials are specified for the wet end and motor?
The ZN855_05_3A_3R features cast AISI 316 stainless steel hydraulics and a Duplex Stainless Steel motor.
What features prevent water hammer shock from damaging internal pump stages?
Shutoff pressure surges are absorbed cleanly by the ZN855-05/3A-3R through its integrated top-outlet check valve.
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