Roll over image to zoom
SKU: ZN646/5-3N
Lowara ZN646/5-3N Stainless Steel 7.5kW Deep Well 6" Submersible Pump with Radial Flow Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
Borehole installations for groundwater supply and mine dewatering require pumps that sustain high flow rates under continuous operation. The Lowara ZN646/5-3N delivers 1000 L/Min from its 6-inch wet end, with a 6-inch motor and NEMA coupling configuration that provides ample power for demanding applications. Water is transferred through the radial flow stages efficiently across the operating range.
Corrosion resistance is achieved through AISI 316 stainless steel construction across all wetted surfaces, 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 7.5 kW three-phase motor at 415V, the pump draws 17 Amps and achieves 51.7 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 on the discharge head facilitate secure 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 | 51.7 m |
| Power | 7.5 kW / 415v |
| Rated Current | 17 Amps |
| Suitable For | Groundwater Extraction |
| Body Material | Stainless Steel |
| Liquid Temperature | Maximum 60°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 performance ratings apply for shut-off head and maximum flow?
The ZN646/5-3N reaches 51.7 metres of shut-off head and a maximum flow of 1000 L/Min.
What power supply and amperage drive this 7.5 kW model?
The 7.5 kW motor on the ZN646-5-3N operates on a 415V supply drawing 17 Amps.
What sand concentration limit is tolerated by the intake screen?
The suction strainer on the ZN646 5 3N limits suspended sand ingress to 100 grams per cubic metre.
Does the delivery head feature integrated holes for safety cables?
Safety hook attachment holes are integrated into the delivery port of the ZN646_5_3N.
What material composition is specified for the shaft?
The drive shaft of the ZN646/5-3N is manufactured from Duplex stainless steel UNS S 31803.
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