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SKU: ZN612/21
Lowara ZN612/21 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
For deep-borehole installations with high lift requirements, the ZN612/21 provides a twenty-one-stage radial flow pump end for six-inch submersible groundwater systems. The increased number of stages provides the hydraulic lift required for deeper installations while maintaining a maximum flow of 275 L/Min.
Its ZN6 pump-end construction uses AISI 316 stainless steel, with AISI 316L stainless steel impellers and diffusers fitted with removable wear rings. The rotating shaft is Duplex stainless steel UNS S 31803 and the replaceable coupling is Duplex stainless steel UNS S 32304. With an L6W motor, operating water temperature is limited to 35°C and suspended sand up to 100 g/m³ is permitted.
The ZN612/21 achieves a maximum head of 238 metres and has hydraulic performance specified to EN ISO 9906 Grade 3B. The standard Rp 2 1/2– (65 mm) threaded delivery connection provides the outlet. A standard 6-inch NEMA motor connection allows coupling with an L6W submersible motor, with maximum immersion depth of 350 metres using L6W motors.
The microcast ASTM CF-8M (AISI 316 cast) discharge head and lower support incorporate an integrated stainless steel non-return valve. Safety-hook holes are provided in the discharge head to assist with lowering and securing the pump end during borehole installation.
FEATURES
- The twenty-one-stage radial arrangement supplies the high hydraulic lift required for deep-borehole applications.
- Removable wear rings provide serviceable hydraulic clearances within the radial stages.
- AISI 316L impellers and diffusers provide the specified stainless-steel construction of the hydraulic stages.
- The Duplex UNS S 31803 shaft is selected for the rotating assembly.
- The replaceable Duplex UNS S 32304 coupling provides the specified coupling material.
- AISI 316L tie rods and cable guard form part of the stainless-steel external assembly.
- The ASTM CF-8M microcast discharge head incorporates the non-return valve and lower support.
* Submersible motor sold separately - requires coupling and assembly
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.
Can the Lowara ZN612 21 handle dirty or gritty bore water?
The pump is designed for the documented sand/particle conditions; do not exceed the manufacturer's stated limits. The impellers are built from heavy-duty materials designed to resist abrasion and sediment wear.
Can I run the Lowara ZN612-21 off a farm generator or solar inverter?
Yes, as long as your generator matches its Continuous-Duty Electric Motor requirement. It's built for continuous duty on 415V three-phase or standard rural power setups.
Is the Lowara ZN612_21 safe to use in mineral-heavy or salty groundwater?
The pump uses stainless-steel wetted components; suitability for saline or aggressive water should be confirmed against the manufacturer's liquid-compatibility limits.
What pipe size connects to the Lowara ZN612/21 discharge port?
It fits a standard 65 mm outlet connection. Using the right pipe diameter ensures you get the full 275 L/Min discharge flow.
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