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SKU: 8GS11
Lowara 8GS11 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
Specified as a standalone hydraulic pump end, the Lowara 8GS11 belongs to the e-GS series for deep well extraction. Pairing with a compatible 1.1 kW (1.47 HP) motor is necessary for system operation. Standard vertical casing installation is standard, but horizontal mounting is specified within motor limits.
Constructed with a stainless steel casing, the pump end protects internal hydraulic components from rust. The multi-stage assembly incorporates 7 floating impellers made of PC/PPO + PS polymer. It permits continuous handling of sand in water up to 150 grams per cubic meter.
Pairing this pump end with its required 1.1 kW motor (7.6 Amps current on 240 V single-phase supply) enables a maximum head of 37.2 m. The coupled system produces a maximum flow of 183 L/Min discharging through a 50 mm Rp outlet. Performance curves conform to factory specifications.
During continuous operation, the wet end handles fluid temperatures up to 35°C. Operating depth limits are 150 meters with 4OS motors and up to 300 meters with L4C motors. Horizontal mounting is possible with 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 7 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 dynamic elevation head can this borehole pump achieve when drawing from deep aquifers?
When lifting groundwater from deep subterranean aquifers, the 8GS11 delivers a maximum dynamic head of approximately 37.2 m, providing reliable water elevation across high vertical pipe columns.
What pipe size connects to the top discharge outlet and what peak flow rate is delivered?
Connecting to your delivery piping requires a standard 50 mm (Rp 2") outlet thread, allowing the 8GS-11 to deliver a peak flow of approximately 183 L/Min while designed to fit inside standard 4-inch (100 mm) or larger borehole casings.
Is this submersible bore pump resistant to corrosion from minerals and particulate wear?
Corrosion defense in harsh underground water sources is provided by stainless steel external casing with floating impellers made of PC/PPO + PS polymer, allowing the 8 GS 11 to maintain structural integrity while tolerating suspended sand concentrations up to 150 g/m³.
What electrical power and voltage supply are required to operate this submersible pump?
Coupling the 8_GS_11 wet end requires a compatible 1.1 kW motor operating on a 220–240 V, 50 Hz, single-phase power supply with a rated current draw of 7.6 A (while 380–415 V, 50 Hz, three-phase motor options are also supported).
Does this pump include an integrated check valve and can it be mounted horizontally?
Reverse flow protection in the 8GS11 is provided by an integrated stainless-steel non-return valve in the discharge head, while horizontal mounting is supported at a minimum recommended 3° incline with the motor at the lowest position and an external cooling shroud fitted.
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