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SKU: ZN646/25-3
Lowara ZN646/25-3 Stainless Steel 37kW Deep Well 6" Submersible Pump with Radial Flow Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
Extreme high-head groundwater extraction for municipal and industrial applications demands pumps with maximum hydraulic capability. The Lowara ZN646/25-3 delivers 255.1 metres of shut-off head from its 6-inch wet end, with a 37 kW motor configuration that provides substantial power for the most demanding applications. The multi-stage hydraulic assembly ensures efficient energy transfer across the operating range.
Corrosion resistance is built into the design through AISI 316 stainless steel construction across every wetted surface, protecting against aggressive groundwater and abrasive wear. The impeller and diffuser arrangement incorporates a removable wear ring for simplified maintenance, while the integrated non-return valve prevents backflow during shutdown. The suction strainer limits suspended sand ingress to 100 grams per cubic metre, preserving internal clearances.
Driven by a 37 kW three-phase motor at 415V, the pump draws 81.8 Amps and achieves 255.1 metres of shut-off head. Flow capacity reaches 1000 L/Min through the 80 mm discharge port. Hydraulic performance complies with EN ISO 9906 Grade 3B tolerances for consistent output.
Class F insulation with IP68 rating supports immersion depths to 350 metres. The Duplex stainless steel shaft provides mechanical strength, while AISI 316L tie rods offer structural integrity. Safety hook holes facilitate installation, and NEMA motor compatibility simplifies assembly.
Z = 6" wet end with 6" Lowara L6C motor
FEATURES- Delivery port incorporates integrated safety hook attachment points
- Drive shaft is manufactured from Duplex stainless steel UNS S 31803
- External tie rods are constructed from AISI 316L stainless steel
- Supplied with a replaceable coupling component for standard maintenance
- Intake strainer is fabricated from AISI 316L stainless steel
- Lower motor support matches standard NEMA mounting dimensions
* Motor and pump supplied separately - requires assembly
SPECIFICATIONS
| Max Flow | 1000 L/Min |
| Max Head | 255.1 m |
| Power | 37 kW / 415v |
| Rated Current | 81.8 Amps |
| Suitable For | Extreme High-Head |
| Body Material | Stainless Steel |
| Liquid Temperature | Maximum 35°C |
| Outlet Size | 80 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.
What maximum shut-off head is delivered by this 37 kW model?
The ZN646/25-3 achieves an extreme shut-off head of 255.1 metres with a maximum flow of 1000 L/Min.
What current draw is consumed by the motor at 415V?
Operating at 415V three-phase, the 37 kW motor of the ZN646-25-3 draws 81.8 Amps.
What sand concentration limit protects internal components?
The intake strainer on the ZN646 25 3 limits suspended sand ingress to 100 g/m³.
What maximum depth of submersion is allowed?
Class F insulation and IP68 protection support immersion depths to 350 metres for the ZN646_25_3.
Does the discharge head include mounting features for safety rigging?
Pre-drilled holes for safety hook attachment are integrated into the discharge head of the ZN646/25-3.
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