Passive Water Intake Screens (T-Screens)
Sustainable and low-maintenance water intake solutions. Our wedge wire passive screens provide efficient filtration while protecting aquatic life and meeting strict environmental regulations.
Environmentally Compliant Water Intake Solutions
A Passive Water Intake Screen is the most efficient way to extract large volumes of water from lakes, rivers, and oceans. Designed with wedge wire technology, these screens operate with a low through-slot velocity (typically less than 0.15 m/s), which is crucial for EPA 316(b) compliance to prevent fish impingement and entrainment.
Our screens are engineered for long-term submerged use, featuring high-strength materials and optional air-burst cleaning systems to ensure continuous flow in debris-heavy environments.
Advanced Features
Aquatic Life Protection
Designed to meet environmental standards by maintaining a low, uniform intake velocity across the entire surface.
Air-Burst Cleaning
Optional integrated back-wash system clears debris using a high-pressure air burst, eliminating the need for manual cleaning.
Corrosion Resistant
Available in 304/316L, Duplex, and Super Duplex stainless steel, or Copper-Nickel for anti-biofouling in seawater.
Intake Types & Configurations
T-Intake Screens
The standard for deep water intake, featuring dual screen cylinders for high capacity.
Half-Drum Screens
Ideal for shallow water applications where height is limited.
Cylindrical Screens
Compact design for smaller intake volumes or vertical installations.
Flat Panel Intakes
Used in specialized diversion structures and dams.
Key Technical Specifications
Specification | Details |
Material | SS 304, 316L, Duplex 2205, Zeron 100, CuNi 90/10 |
Slot Sizes | 1mm to 10mm (Commonly 2mm – 6mm) |
Flow Rates | From 100 m³/h up to 20,000 m³/h+ per unit |
Through-Slot Velocity | Designed to < 0.15 m/s (0.5 fps) |
Configurations | T-Style, Half-Drum, Cylindrical, or Flat |
Cleaning System | Manual or Automatic Air-Burst System |
Environmental Compliance
Compliance with EPA 316(b) is essential for modern water intake projects. Our engineers use Computational Fluid Dynamics (CFD) modeling to ensure that the through-slot velocity remains uniform across the entire screen surface. This protects fish larvae and small aquatic organisms while providing the reliable flow required for power plant cooling or desalination intake.
Frequently Asked Questions
We recommend using Copper-Nickel (CuNi 90/10) alloys or specialized coatings that naturally inhibit the growth of barnacles and algae.
It is a system that releases a large volume of compressed air inside the screen cylinder, creating a shockwave that clears debris from the external surface.
Yes, our Half-Drum or custom rectangular designs are specifically engineered for shallow water where a standard T-screen would be exposed.