Flood DefendTM
Self Rising Automatic Flood Defense Barrier for Garage Entrance
NEWFLAG manufactures reliable automatic flood defense barrier for garage entrance. It is hydrodynamic driven by rising flood water itself, and can be customized in module supply form according to the doorway width at site. It consists of the bottom frame,floating barrier panel with non-slip surface in module supply, and the end sealing rubber attached to the side wall.
The rising or retreating flood water will flip up or close down the barrier panel automatically and it does not require power or human to intervene.It can be also manual lifted by an adult due to its lightweight technology. The structure is designed simple to reduce the risk of failure and easy to repair or replace.
Advantage:
1. No power or human labor required, fully driven by water itself
2. Lightweight structure for manual operation;
3. Can be constructed in either ramp form sitting directly or ground or embedded form flush to ground.
Requirement:
1. Side Wall (to attach the end retaining rubber);
2. Flat ground plastering ±3mm;
3. Require ground slotting work for containing space if flush to ground is required.
4. Drainage inside the box can be considered to be pre-constructed before start the installation or prepare a small pump to drain the water inside after flood.
Understanding Flood Risk in Garage Structures
Garages often sit below street level. This makes them direct collection points for stormwater, surface runoff, and sewage backflow. Even short-duration flooding can cause structural damage, electrical failure, vehicle loss, and long downtime.
Traditional flood protection methods rely on manual intervention. These include sandbags, removable boards, or temporary steel panels. While effective in controlled conditions, these methods fail when flooding occurs suddenly or outside working hours.
An automatic flood defense barrier for garage installations addresses this limitation by responding without human input.
Explore Water-Activated Flood Defense Barrier in Detail
The product adopts modular assembly technology, which can achieve rapid on-site installation. The working principle of this device is that the overall buoyancy of the baffle is less than that of water. The device is fixed on the ground, and when the area of water exceeds the height of the baffle, the buoyancy of the water pushes the baffle upward to rotate. When the accumulated water drops, the baffle synchronously drops with the water level, ultimately achieving automatic flood prevention and water blocking.
The overall barrier can be installed by ground embedding or surface installation, and the embedded installation barrier device is flush with the ground to achieve barrier free passage. If installed on the ground, the barrier device will be about 5 centimeters above the ground and can be used as a speed bump for vehicles entering and exiting.
During non flood season, there is no standing water on the ground, and the barrier is in close contact with the bottom frame, allowing pedestrians and vehicles to freely pass through.When there is water accumulation on the ground during the flood season, the accumulated water flows into the bottom cavity through the bottom frame inlet grille, and the buoyancy of the water is used to push up the baffle to achieve water blocking function.
NewFlag Garage Door Flood Protection Barrier Specifications
| Parameter | Details |
|---|---|
| Place of Origin | Wuxi, China |
| Product Name | Automatic Flood Barrier |
| Surface Treatment | Stainless Steel |
| Product Features | Fully automatic, water-driven operation |
| Manufacturing Technics | Complicated fabrication |
| Application | Flood protection |
| OEM Service | Accepted |
Flood Height:
H0.6-H1.5meter to be customized as per request;
Length:
Fits the doorway width between side walls (Supply in module);
Orer-Pass Weight:
Allow vehicle within 4.5 Metric Tons (higher strength can be customized if required).
| Structure | Specification | Function |
|---|---|---|
| Floating Barrier Panel | L max. 3000 × W max. 1500 × T35 mm per module | Floating body |
| Non-slip Stainless Steel Sheet | T1.2 mm | Anti-slip surface |
| Aluminum Joint Frame | W30 × H40 × T2.5 mm | Module connection |
| Bottom Frame | SUS304L square tube 20 × 20 × T2 mm | Structural support |
| Speed Bump | H50 × W100 × L1000 mm / pc | Reduce vehicle speed |
| Water Inlet Grilles | SUS304L, H55 × W50 × L1000 mm / pc | Water inlet |
| Pulling Wire Rope | Ø5 mm stainless steel wire rope | Prevent over-flipping |
| Foldable Back Rubber | T5 mm fiber-reinforced rubber | Water sealing at width |
| Rubber Fixing Frame | SUS304L, T2 × W20 mm | Fixing on barrier panel |
| Expansion Bolts | SUS304L, M10 × 100 mm | Fixing structure to ground |
| End Retaining Rubber | T5 mm fiber-reinforced rubber | Water sealing at wall |
| Wall Fixing Frame | SUS304L, T5 × W30 × L (custom) | Fix end rubber on wall |
Alarming system is optional if required.
Barrier Material
SUS304 stainless steel bottom frame, stainless steel wire rope, buoyancy baffle, EPDM flexible seal, SUS304 anti slip panel, etc.
Partner With NewFlag for Reliable Automatic Flood Defense Solutions for Garage Entrance
Protect your garage from flood damage with an automatic flood defense barrier designed specifically for garage entrances and underground parking areas. The system activates automatically as floodwater rises and operates without electricity or manual intervention. It can be installed in an embedded configuration with the surface panel flush to the ground, ensuring smooth vehicle access during normal use. The simple mechanical structure supports long-term operation and easy maintenance. Contact us today to discuss your garage flood protection needs and receive a reliable automatic flood defense solution.
Typical Garage Applications for Automatic Flood Defense Systems
NEWFLAG‘s automatic flood defense barrier is used in underground and basement garages where floodwater can rapidly enter through garage openings and cause damage to vehicles and interior spaces. It operates automatically and remains effective during power outages.
The system is also suitable for ground-level home garages exposed to surface runoff, sloped driveways, or poor drainage conditions, providing reliable protection at the entrance without affecting daily vehicle access.
Installation Technical Requirements
The overall installation accuracy is ±5mm, ground flatness requirements ≤3mm/m. According to the requirements of site, it can be constructed in
1. Ramp form directly sitting on existing ground with speed bump attaching both sides (Product height when closed is approx.55-60mm above the ground);
2. Embedded form with top surface flush to ground by slotting the ground for containing space.
The weight of the lightweight barrier panel with great strength is about 18.5KGs/Square Meter which can withstand the crush of vehicle weights 4.2 metric tons. We can customize the barrier panel for the requirement even for container truck.
