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SKU: 4GS11
Lowara 4GS11 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 multi-stage Lowara 4GS11 is a submersible borehole wet end within the high-performance e-GS family of pump ends. The system becomes operational once coupled to a standard 1.1 kW (1.47 HP) electric motor. It allows vertical installation in narrow wells or horizontal mounting.
With a stainless steel external casing, the pump end is constructed to resist water corrosion. The internal design has 14 stages featuring floating impellers molded from PC/PPO + PS polymer. This configuration is specified for suspended sand up to 150 grams per cubic meter.
Pairing this wet end with a standard 1.1 kW electric motor rated at 7.6 Amps on a 240 V single-phase line yields a maximum head of 84.0 m. The multi-stage pump end delivers a maximum flow of 90 L/Min via its Rp 1-1/4" (32 mm) outlet. Performance is verified under standard testing.
Maximum fluid temperature for this pump end is specified for 35°C during operation. The submersion limit is 150 meters when coupled with a 4OS motor and up to 300 meters with an L4C motor. Horizontal placement is possible up to motor-rated kilowatts. The multi-stage design requires proper coupling with standard motors to maintain correct performance under standard system heads.
FEATURES
- Equipped with 14 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.
Does this submersible unit incorporate a check valve and permit horizontal installation?
Limiting reverse flow during shutdown, the 4GS11 features an integrated stainless-steel non-return valve in the discharge head and supports horizontal mounting at a minimum recommended 3° incline with the motor lowest and a cooling sleeve.
How high can this extraction pump push water up from an underground borehole?
Borehole lifting operations are powered by the 4GS-11, which delivers a peak dynamic head of approximately 84.0 m from subterranean aquifers.
What diameter pipe connects to the top outlet and what is the highest flow volume?
Plumbing lines attach directly to the 32 mm (Rp 1-1/4") delivery outlet, where the 4 GS 11 delivers a maximum flow capacity of approximately 90 L/Min inside standard 4-inch (100 mm) or larger borehole casings.
Is this deep well pump built with corrosion-resistant alloys for underground longevity?
Hydraulic longevity in mineral-laden water is assured by stainless-steel with floating impellers in the 4_GS_11, which manages sand concentrations up to 150 g/m³.
What are the required electrical power and voltage specifications for this unit?
Coupling the 4GS11 pump end requires a 1.1 kW motor powered by 220–240 V, 50 Hz, single-phase (with 380–415 V, 50 Hz, three-phase motor variants supported).
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