Flood DefendTM
Heavy-Duty Steel Flood Door for Critical Sites
The NewFlag Heavy‑Duty Steel Flood Door is engineered for critical infrastructure and high-value areas, providing reliable protection against floods, heavy rain, and sudden water surges. Constructed from high-strength steel and advanced sealing systems, this flood door ensures complete waterproofing and long-term durability.
- High Watertightness – Provides complete perimeter sealing even under full submersion.
- Quick Manual Operation – Easily closed/opened via integrated handwheel mechanism.
- Low Maintenance – Robust construction with EPDM seals and corrosion-resistant finish.
- Long Service Life – Durable design rated for 10–20 years in harsh environments.
- Smart Upgrade Options – Available with remote control (mobile app) or automatic flood-sensor activation.
Explore NewFlag's Heavy-Duty Steel Flood Door
The Heavy-Duty Steel Flood Door by NewFlag offers complete protection for areas prone to flooding, such as mechanical rooms, control rooms, and electrical enclosures. Unlike standard demountable barriers, our doors are fully watertight from top to bottom, preventing water intrusion even in extreme floods.
Built with strong steel panels and reinforced frames, each door is coated with fluorocarbon anti-weathering paint for superior corrosion resistance. The EPDM perimeter seal ensures a tight closure, operated manually via a rotating handwheel for quick and reliable flood protection with minimal effort.
For larger openings, doors can split into two leaves with a removable central column for stability and full sealing. Optional automation via app or flood sensors enables automatic closure, reducing reliance on manual operation while ensuring safety and efficiency.
Advantages of Heavy-Duty Steel Flood Doors
Protect Critical Infrastructure
The NewFlag flood door prevents water damage to vital equipment and sensitive areas, minimizing downtime and avoiding costly repairs. Its watertight performance safeguards mechanical, electrical, and utility rooms from unexpected floods.
Durable and Long-Lasting
Constructed from high-quality steel with anti-corrosion coating, these doors provide long-term protection, reducing maintenance costs and ensuring years of reliable service under extreme conditions.
Quick and Efficient Operation
The handwheel or optional automated system enables fast deployment, ensuring doors are sealed immediately in the event of rising water levels, protecting assets without manual delay.
Flexible for Custom Projects
NewFlag offers custom dimensions and OEM options, allowing doors to be tailored to any opening size or site-specific requirement, making them suitable for large-scale industrial projects or niche civic installations.
Technical Drawings of Watertight Steel Flood Doors
Industrial Applications of Steel Flood Doors
Industrial and Utility Facilities
These flood doors are ideal for power plants, water treatment facilities, and manufacturing plants where equipment rooms, auxiliary units, or storage areas must remain dry during floods.
Civic Infrastructure
Applicable to municipal buildings, underground parking, and critical public service areas, NewFlag flood doors protect facilities from water intrusion, maintaining operational continuity and public safety.
Specialized Sensitive Sites
For control rooms, server rooms, and electrical enclosures, our doors offer full-height watertight sealing, ensuring critical electronic and control equipment remains protected during extreme weather events.
Specifications of Heavy-Duty Steel Flood Doors
| Specification | Description |
|---|---|
| Raw Material | Mild Steel or Stainless Steel, Gasket, mechanical hand wheel |
| Height | Fit the door height |
| Width | MAX. 2000mm for each leaf |
| Panel Thickness | T8mm |
| Door Frame | T5*100*100 Square Tube |
| Gasket | EPDM |
| Surface | Powder Coated |
| Powder Coated | Customized |
| Application | Garage, Parking Lot, Buildings, Shopping Front, Residence Door, Factory Entrance, etc. |
How to Choose a Steel Flood Door
Flood Protection Level – Determine the maximum water height and pressure the door needs to withstand. Heavy-duty doors are rated for both hydrostatic and dynamic water forces, ensuring safety during severe floods.
Construction and Materials – Look for doors made from reinforced steel with corrosion-resistant coatings. Durable construction resists impact from debris and prolongs service life.
Sealing and Watertight Performance – High-quality gaskets and precision-engineered frames prevent water ingress, protecting sensitive areas like electrical and mechanical rooms.
Size and Customization – Choose doors that fit your facility’s layout. Customizable options for panels, locks, and opening mechanisms improve usability without compromising protection.
Maintenance and Reliability – Consider doors with anti-weathering treatments and low-maintenance designs to ensure long-term performance.