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SKU: 12GS75
Lowara 12GS75 Stainless Steel Deep Well 4" Submersible Bore Pump (Wet End Only) with Floating Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
With high-efficiency hydraulics, the Lowara 12GS75 is an e-GS series borehole pump end, meeting strict ErP regulations. Full service requires coupling this wet end with a compatible 7.5 kW (10.0 HP) electric motor. The mechanical framework allows vertical well configurations or horizontal cisterns.
Constructed for long-term submersion, the pump end features a stainless steel outer sleeve. The internal floating stack contains 43 stages utilizing PC/PPO + PS polymer components. This hydraulic design handles water with suspended sand up to 150 grams per cubic meter.
When matched with a compatible 7.5 kW motor operating on 18.7 Amps current (415 V three-phase line), the coupled assembly yields a maximum head of 178.4 m. The pump end achieves a maximum flow of 250 L/Min discharging through its Rp 2" (50 mm) outlet. Output is verified by factory curves.
Liquid temperature during operation must not exceed 35°C. This pump end is specified for submersion depths up to 150 meters with 4OS motor lines, and up to 300 meters with L4C motor lines. Horizontal use is possible for 4OS motors up to 2.2 kW and L4C motors up to 7.5 kW. The multi-stage design requires proper coupling with standard motors to maintain correct performance under standard system heads.
FEATURES
- Equipped with 43 multi-stage floating impellers designed to minimize abrasive wear from sand particulates.
- The external sleeve is fabricated from durable stainless steel to prevent rust and prolong operating life.
- Includes a built-in stainless steel non-return valve in the discharge head to prevent damaging backflow.
- The hexagonal shaft distributes mechanical torque evenly, eliminating vulnerable keyed connections.
- Features precision-cast stainless steel upper and lower brackets to maintain alignment with the motor.
- Complies fully with the Minimum Efficiency Index threshold of 0.40 under European ErP directives.
- Designed to safely handle water temperatures up to 35°C in continuous underwater applications.
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 delivery port thread size is built into the pump and what peak volume is pumped?
Installation to delivery pipes is completed via the 50 mm (Rp 2") discharge head, with the 12GS75 reaching a peak flow rate of approximately 250 L/Min within standard 4-inch (100 mm) or larger borehole casings.
What materials prevent corrosion and abrasive damage inside this borehole pump?
To withstand aggressive water tables, the 12GS-75 is manufactured from stainless steel external casing with floating impellers made of PC/PPO + PS polymer, ensuring robust resistance against wear and sand up to 150 g/m³.
What are the specific motor power and electrical voltage demands for this unit?
The motor for the 12 GS 75 requires a dedicated 7.5 kW connection on 380–415 V, 50 Hz, three-phase, with rated operating current of 18.7 A.
Does this borehole pump include a non-return valve and can it be arranged horizontally?
Eliminating column reversal upon deactivation, the 12_GS_75 provides an integrated stainless-steel non-return valve in the head and allows horizontal deployment at a minimum recommended 3° incline with the motor lowest.
How high can this borehole extraction unit propel water upward from underground aquifers?
Overcoming deep well hydraulic resistance, the 12GS75 delivers a peak dynamic head of approximately 178.4 m for reliable water distribution.
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