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SKU: 8GS55
Lowara 8GS55 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 8GS55 is an e-GS series borehole pump end, meeting strict ErP regulations. Full service requires coupling this wet end with a compatible 5.5 kW (7.33 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 38 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 5.5 kW motor operating on 13.7 Amps current (415 V three-phase line), the coupled assembly yields a maximum head of 214.8 m. The pump end achieves a maximum flow of 183 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 38 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 diameter plumbing connects to the delivery port and how much flow does it produce?
Surface piping connects to the 50 mm (Rp 2") discharge connection, where the 8GS55 provides a peak flow capacity of approximately 183 L/Min for standard 4-inch (100 mm) or larger borehole casings.
How well does this submersible bore pump withstand abrasive sand and corrosive groundwater?
Long-term subterranean durability is provided by stainless steel external casing with floating impellers made of PC/PPO + PS polymer housing, allowing the 8GS-55 to withstand mineral exposure and suspended sand up to 150 g/m³.
What kilowatt rating and voltage configuration are needed to power this borehole pump?
Operating requirements for the 8 GS 55 specify a 5.5 kW motor running on 380–415 V, 50 Hz, three-phase, with full-load amperage rated at 13.7 A.
Does this borehole unit include a built-in non-return valve and can it mount horizontally?
Protection against backflow in the 8_GS_55 is provided by an integrated stainless-steel non-return valve in the delivery head, with horizontal mounting supported at a minimum recommended 3° incline with the motor at the lowest position.
What vertical lift height does this borehole pump deliver when operating underground?
Capable of overcoming substantial elevation resistance, the 8GS55 reaches a maximum dynamic head of approximately 214.8 m to supply water from deep borehole reservoirs.
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