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SKU: 12GS11
Lowara 12GS11 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
The Lowara 12GS11 is a submersible borehole wet end within the e-GS range, meeting ErP directives with MEI values above 0.40. Pairing this pump end with a compatible 1.1 kW (1.47 HP) electric motor is required for full operation. Standard well installation is vertical, although horizontal mounting is available with motor-dependent limits.
The external sleeve is fabricated from stainless steel to limit water corrosion. Internally, a floating impeller stack incorporates 7 stages made of PC/PPO + PS polymer components. This multi-stage setup allows the handling of suspended sand up to a maximum concentration of 150 grams per cubic meter.
When coupled with a 1.1 kW motor (drawing 7.6 Amps on 240 V single-phase), the complete assembly achieves a maximum head of 26.1 m. The pump end delivers a maximum flow of 250 L/Min via an Rp 2" (50 mm) outlet. Volumetric parameters are validated under official testing guidelines.
The pump end is specified for water temperatures up to 35°C during service. Submersion limit is 150 meters with 4OS motors, or up to 300 meters with L4C motor options. Horizontal operation is possible using 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
- Features 7 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.
Is an integrated check valve present in the head and can this unit be positioned horizontally?
Reverse drainage is arrested in the 12GS11 via an integrated stainless-steel non-return valve in the discharge head, with horizontal mounting supported at a minimum recommended 3° incline with the motor lowest.
What vertical head limit does this borehole extraction pump support in deep water wells?
For deep well pressure requirements, the 12GS-11 yields a maximum dynamic head of approximately 26.1 m, delivering consistent vertical water lift.
What pipe connection diameter is on the pump head and how many liters can it push?
Riser piping mates with the standard 50 mm (Rp 2") outlet port, allowing the 12 GS 11 to produce a maximum flow of approximately 250 L/Min when installed in standard 4-inch (100 mm) or larger borehole casings.
Is this deep well pump built from corrosion-resistant materials to prevent degradation?
Resistance against aggressive underground minerals is achieved through stainless steel external casing with floating impellers made of PC/PPO + PS polymer, with the 12_GS_11 tolerating suspended abrasive particles up to 150 g/m³.
What power rating and voltage requirements apply to this submersible borehole motor?
Connecting the 12GS11 to a power supply involves pairing it with a 1.1 kW motor on 220–240 V, 50 Hz, single-phase rated at 7.6 A (with 380–415 V, 50 Hz, three-phase motor options supported).
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