Roll over image to zoom
SKU: ZN855-05/3A-3S
Lowara ZN855-05/3A-3S 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
Hydraulic design principles based on a five-stage configuration with three reduced impellers characterize this 8-inch series pump. It is engineered for agricultural systems needing high volume delivery and precise pressure matching for distribution lines from deep wells. The assembly is compatible with vertical borehole installations or horizontal mounting in tanks where a minimum incline is maintained. This model serves as a specialized tool for municipal water extraction and large-scale industrial projects.
Technical delivery capabilities for this model include a maximum total head of 117.5 m and a flow capacity up to 1216 L/Min via the 125 mm outlet. Powered by an 18.5 kW motor on a 415v three-phase supply, the unit draws a rated current of 38.5 Amps during operation. A semi-axial flow arrangement ensures consistent delivery with a nominal flow rate of 55 m³/hr at 2900 rpm. All technical specifications are verified for liquids with a density of 1.0 kg/dm³.
Primary components such as the impellers, diffusers, and delivery casing are constructed from cast AISI 316 Stainless Steel for material integrity. The motor is also made of 316 Stainless Steel and is rated for contact with liquids up to 25°C. The design handles water containing suspended sand levels of 100 g/m³ through its five-stage hydraulic arrangement. A duplex stainless steel shaft and coupling are utilized to transmit power to the hydraulic end to handle generated torque.
The unit handles 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 wear surfaces are managed by technopolymer POM-C wear rings and EPDM 70 bearing bushes to ensure mechanical alignment and hydraulic performance. The unit is designed for heavy-duty industrial extraction and municipal supply applications.
FEATURES
- 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.
- Internal technopolymer POM-C wear rings maintain hydraulic clearances and reduce internal friction.
- EPDM 70 bearing bushes support the pump shaft assembly and handle mechanical loads during rotation.
- A stainless steel suction strainer excludes large particles from entering the hydraulic stages.
- 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.
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 total electrical load does this 18.5 kW / 415v motor place on three-phase lines?
Connecting the ZN855-05/3A-3S to 415V three-phase power activates its 18.5 kW / 415v motor for high-volume deep well pumping.
How high can this semi-axial hydraulic assembly lift water from deep aquifers?
Aquifer water is lifted efficiently by the ZN855-05-3A-3S, designed to reach a total dynamic head pressure of 117.5 m.
How much groundwater per minute can be lifted through the 125 mm discharge port?
Groundwater recovery with the ZN855 05 3A 3S produces up to 1216 L/Min through its heavy-duty 125 mm discharge port.
What material grades are specified for the wet end and motor?
The ZN855_05_3A_3S uses cast AISI 316 stainless steel wet-end components and 316 motor construction.
How do internal wear rings reduce friction and maintain efficiency in gritty water?
Internal friction in gritty water is minimized within the ZN855-05/3A-3S by POM-C wear rings and EPDM guide bearings.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us