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SKU: 12GS55
Lowara 12GS55 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
Forming the hydraulic wet end of a submersible pump system, the Lowara 12GS55 is a redesigned 4-inch e-GS borehole component. This model is specified for coupling with a 5.5 kW (7.33 HP) electric motor. Well installation allows vertical placement or horizontal mounting inside tanks.
A stainless steel casing houses the multi-stage hydraulics, protecting the internal floating stack. This model is equipped with 35 floating impellers made of wear-resistant polymer. The system handles suspended sand particles up to a maximum of 150 grams per cubic meter.
Upon coupling this pump end to its specified 5.5 kW motor (rated for 13.7 Amps on 415 V three-phase power), the combined unit reaches a maximum head of 145.2 m. It delivers a maximum flow of 250 L/Min through a Rp 2" (50 mm) port. High volumetric delivery is maintained under load.
Continuous service is possible in liquid temperatures reaching up to a maximum of 35°C. The assembly is specified for submergence depths up to 150 meters with a 4OS motor or up to 300 meters with an L4C motor. Horizontal deployment is possible within motor limits. The multi-stage design requires proper coupling with standard motors to maintain correct performance under standard system heads.
FEATURES
- Features 35 multi-stage floating impellers to drastically limit wear and abrasion from suspended sand particles.
- Constructed with a sturdy stainless steel outer sleeve to limit corrosion and protect internal hydraulic components.
- Includes an integrated stainless steel strainer to filter out oversized particles and prevent debris entry.
- Features a hexagonal pump shaft design that distributes mechanical torque without vulnerable keyed joints.
- The upper and lower brackets are made of precision-cast stainless steel to establish a sturdy motor coupling.
- ErP/Ecodesign compliant in accordance with strict European Minimum Efficiency Index of 0.40 or higher.
- Suitable for continuous submerged operations in liquid temperatures reaching up to a maximum of 35°C.
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 this submersible borehole unit lift water from deep groundwater reserves without stalling?
Lifting water across steep vertical profiles, the 12GS55 develops a maximum dynamic head of approximately 145.2 m, maintaining pressure through long delivery lines.
What connection dimensions exist on the discharge outlet and how much flow is discharged?
Fluid discharge is directed through the 50 mm (Rp 2") outlet port, where the 12GS-55 attains a maximum flow capacity of approximately 250 L/Min inside standard 4-inch (100 mm) or larger borehole casings.
Is this submersible borehole pump built to resist corrosion from mineralized water?
Long-lasting subterranean operation is supported by stainless steel external casing with floating impellers made of PC/PPO + PS polymer metallurgy in the 12 GS 55, which tolerates sand content up to 150 g/m³.
What power supply voltage and motor kilowatt rating are required for this borehole pump?
Running the submersible motor for the 12_GS_55 demands a 5.5 kW power source operating across 380–415 V, 50 Hz, three-phase, with nominal current at 13.7 A.
Is an internal check valve built into the discharge and does it support horizontal positioning?
Safe shutdown without column drain-back is delivered by an integrated stainless-steel non-return valve in the 12GS55, with horizontal mounting supported at a minimum recommended 3° incline with the motor lowest.
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