Roll over image to zoom
SKU: ZN855-02/2A-3S
Lowara ZN855-02/2A-3S Stainless Steel 7.5kW Deep Well 8" Submersible Bore Pump with Semi-Axial Flow Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
Construction of this 8-inch submersible pump features a two-stage assembly with reduced impeller diameters for specific head matching. This hydraulic design is intended for clean groundwater extraction where precise head and flow ratios are required for the distribution network. The unit is suitable for vertical installation in deep wells or horizontal deployment in storage tanks provided an inclination is maintained. This configuration serves municipal water supply projects needing specific pressure thresholds.
The unit achieves performance characteristics including a maximum head of 42.9 m and a maximum flow rate of 1216 L/Min. Electrical power is provided by a 7.5 kW motor drawing a rated current of 17 Amps from a 415v three-phase supply. The semi-axial flow design is optimized for high delivery efficiency through its its 125 mm discharge outlet. All performance data is verified for liquids with a density of 1.0 kg/dm³ at a rotation speed of 2900 rpm.
Wetted parts such as the delivery casing, suction support, and internal diffusers are constructed from cast AISI 316 Stainless Steel. The motor is also made of 316 Stainless Steel and is rated for operation in liquids at temperatures up to 25°C. The system handles water with suspended sand concentrations reaching 100 g/m³ through the use of technopolymer POM-C wear rings. A duplex stainless steel shaft is used to transmit power to the hydraulic stages.
Immersion depth for this electric pump is rated to a maximum of 350 meters to suit deep borehole extraction needs. The overall diameter is 198 mm including motor cable covers, making it compatible with standard 8-inch borehole well casings. A built-in non-return valve with a stainless steel spring protects the internal components from backflow during shutdown. Internal clearance is managed by EPDM 70 bearing bushes supporting the shaft assembly during industrial service.
FEATURES
- A stainless steel suction strainer excludes large particles from entering the hydraulic stages.
- A duplex stainless steel taperlock system secures the impellers to the shaft for torque transfer.
- 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.
- 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.
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 does this 7.5 kW / 415v motor handle continuous duty on a 415V power network?
Continuous duty cycles of the ZN855-02/2A-3S are supported by a 7.5 kW / 415v motor wired for 415V three-phase power.
Is this deep-well pump engineered for high dynamic head applications up to 42.9 m?
High-lift water distribution networks benefit from the ZN855-02-2A-3S, which achieves a maximum dynamic head of 42.9 m.
What flow capacity is delivered when operating at peak hydraulic efficiency?
Peak hydraulic efficiency for the ZN855 02 2A 3S yields a maximum discharge output rate of 1216 L/Min via a 125 mm port.
Is the motor casing made from corrosion-resistant stainless alloys for deep immersion?
Submerged motor components in the ZN855_02_2A_3S are enclosed in cast AISI 316 stainless steel wet end components and 316 motor construction for chemical isolation.
How does the built-in check valve prevent reverse rotation caused by backflowing water?
Reverse rotation prevention in the ZN855-02/2A-3S is guaranteed by its integrated check valve, protecting internal shaft splines.
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