Roll over image to zoom
SKU: 4ZN660/3
Lowara 4ZN660/3 Stainless Steel Deep Well 6" Submersible Bore Pump (Wet End Only) with Radial Flow Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
As a standalone hydraulic wet end, the Lowara 4ZN660/3 represents a technical solution within the Z6 Series range of submersible borehole pumps. Operating this wet end requires secure coupling with a compatible 5.5 kW electric motor of the appropriate power rating. Designed for secure installation inside standard 6-inch deep wells, the assembly operates inside standard casings. It is suitable for groundwater lowering and dewatering systems, municipal supply lines, and agricultural distribution projects.
To support long-term physical stability during operation, the structural sleeve and discharge head are engineered from cast AISI 316 Stainless Steel. The multi-stage centrifugal hydraulic assembly consists of 3 stages, each incorporating an AISI 316L stainless steel radial impeller. The integrated radial impellers are designed to limit abrasive wear from sand particles, supporting water containing up to 100 g/m³ of suspended sand.
Once paired with its designated 5.5 kW electric motor (nominal current rating of 13.2 Amps), the coupled assembly achieves up to 31 m maximum head. This multi-stage hydraulic wet end generates a maximum flow of 1,300 L/Min through its Rp 80 mm threaded connection. All performance parameters are in accordance with manufacturer technical specifications.
The pump has a maximum external diameter of 142 mm for installation inside standard 6-inch borehole wells. Maximum pump immersion depth is 300 m when used with C4S motors and 350 m when used with L6W motors. The lower support bracket incorporates a standard 4" NEMA-compliant mount for simple mechanical motor integration. Safe coupling requires correct mechanical alignment of the pump shaft and the motor shaft during mechanical coupling.
FEATURES
- Constructed entirely from AISI 316 Stainless Steel for corrosion protection and structural durability.
- Equipped with 3 multi-stage radial centrifugal impellers manufactured from AISI 316L stainless steel.
- Includes an integrated spring-loaded AISI 316 non-return valve in the discharge head to prevent backflow and maintain system pressure.
- Features a high-strength Duplex Stainless Steel pump shaft and sleeves.
- Equipped with a standard 4" NEMA-compliant motor support bracket and coupling for easy motor integration.
- ErP/Ecodesign compliant with a Minimum Efficiency Index (MEI) of 0.40 or higher, optimizing energy performance.
- Designed with a compact 142 mm maximum external diameter for secure installation inside 6-inch deep well boreholes.
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.
Which motor kilowatt power and electrical supply voltage are required for this unit?
Supplying power to the 4ZN660/3 requires coupling a 4-inch NEMA C4S motor rated at 5.5 kW operating on 380–415 V, 50 Hz, three-phase with a rated draw of 13.2 A, capable of operating up to 60°C and submerged up to 300 meters.
Is a non-return valve integrated into the outlet and can this pump operate horizontally?
The microcast discharge assembly of the 4ZN660-3 houses an integrated stainless steel non-return valve, supporting horizontal mounting at a minimum recommended 3° incline with the motor in the lowest position.
Is this submersible bore unit engineered to lift water up from deep subterranean reservoirs?
Overcoming high elevation resistance in deep wells, the 4 ZN 660 3 delivers a maximum dynamic head rating of approximately 31 m to push water from deep well shafts.
Which connection size is on the pump head and what maximum delivery rate is achieved?
The top outlet incorporates a Rp 3" (80 mm) threaded connection, with the 4_ZN_660_3 supplying a peak flow volume of approximately 1300 L/Min in standard 6-inch borehole installations.
Is this submersible borehole pump built with corrosion-resistant stainless components?
Protecting against aggressive borehole minerals, the 4ZN660/3 incorporates AISI 316 stainless steel pump end, AISI 316L stainless steel impellers and diffusers with removable wear rings, Duplex UNS S 31803 shaft, and Duplex UNS S 32304 coupling, providing wear resistance against sand up to 100 g/m³.
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