Guppy™ MAX Large-Scale Water Filled Flood Barrier
Guppy™ MAX is a heavy-duty, water-filled flood protection system engineered for large-scale flood defence. Its innovative three-chamber construction forms a stable trapezoidal barrier when filled, providing dependable water diversion and protection for properties, infrastructure and critical assets.
Each Guppy™ MAX unit measures 40 inches in diameter and 30 feet in length, making it suitable for creating substantial temporary flood barriers across a wide range of locations. The unit can be filled using a 2 1/2-inch fire hose for rapid deployment during flood emergencies.
The integrated extended seaming flap allows multiple units to be connected together, helping create longer continuous barriers around buildings, perimeters, entryways and other vulnerable areas. After use, the reusable tube can be drained, dried thoroughly and stored for future flood protection requirements.

Supersized Flood Defence
Guppy MAX is designed to help protect property and valuable assets from flood damage. Its flexible material construction allows the barrier to conform to many surfaces, helping minimise water seepage. The extended seaming flap also allows multiple units to be joined together to achieve the required length of protection.
Applications of Guppy MAX
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Cofferdams: Create temporary watertight enclosures for construction, maintenance or repair work in waterlogged areas.
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Water Diversion Barriers: Redirect water away from critical infrastructure and help maintain operational continuity.
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Industrial Flood Defence: Protect large industrial sites using configurations tailored to the area requiring coverage.
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Residential & Commercial Protection: Create a temporary barrier around homes, offices and commercial buildings to block and divert floodwater.
Why Choose Guppy™ MAX?


Deploy, Installation & Storage
Roll the Guppy MAX water-filled tube into the required position before filling. The unit is designed to be filled using a 2 1/2-inch fire hose.
Because each unit holds approximately 2,115 gallons of water, positioning the tube close to the available water supply is recommended. Once completely filled, the unit becomes extremely heavy and should not be moved, so ensure it is correctly positioned before filling.
After the flood event has ended, drain the tube carefully to avoid releasing large volumes of water into an already saturated area.
Allow the barrier to become completely dry and remove any water or debris before folding it for storage. Store the unit in a cool, dry location ready for future use.

Connecting Multiple Units
Each Guppy MAX tube features an extended seaming flap along one side. When installing multiple units, position the correct ends together so the sections can be connected securely around the protected structure.
Use the integrated PVC ropes or tie strings through the grommet holes to join adjacent units securely. The same connection points can also be used to fasten the barrier to the ground with suitable stakes where required.

Adding 90-Degree Corner Turns
Guppy MAX can be installed in a straight run or combined with a dedicated Guppy MAX Corner Unit to create a 90-degree turn.
The extended seaming flaps on the Corner Unit allow adjacent MAX sections to be securely connected using the integrated rope ties and grommet holes. This makes it possible to create continuous perimeter protection around corners, structures and vulnerable areas.

Specifications
GMAX – Flood Protection Up To 40 Inches

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Product: Guppy MAX Water Filled Flood Barrier
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Diameter: 40 inches
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Length: 30 feet
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Water Capacity: Approximately 2,115 gallons
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Material: Composite PVC mesh
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Material Weight: 21.5 oz. / 1800 gsm / 1000D 20 × 20
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Material Thickness: 1.5 mm
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Construction: Whole thermal bonding moulding construction
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Fire Resistance: EN13501-B1
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Usage Temperature: -32°F to 158°F
Cold Weather Use: RV antifreeze is recommended for temperatures below freezing. If freezing conditions are expected, tubes should be filled to no more than three-quarters of their capacity.
Download Specification Sheet
About Shipping
Shipping quoted separately: Shipping for Garrison Flood products is customized based on the product and delivery location and is not included in the listed price. Purchase your product now to receive a separate shipping quote afterward, or contact Home Power Tech before ordering at support@homepowertech.com or call/text 727-334-0176. We’ll confirm the shipping cost with you before arranging shipment.