Passive Intake Screens utilizing natural water flow and low differential pressure for filtration and reduced load on pumping equipment

Product Descriptions

Passive intake screens are engineered water intake devices designed for seawater desalination plants, riverbed water intake systems and coastal water supply projects. Each screen features a single-layer wire-wrapped screen section with flange connections, enabling easy installation, low maintenance and reliable long-term operation.

Each unit is custom-manufactured to customer specifications, with a diameter of up to 1500 mm, screen length of up to 6 m and slot openings as small as 0.05 mm—ensuring effective filtration while maintaining high flow capacity.

Key Features

• Single-layer wire-wrapped structure: continuous, uniform slots and high open area for stable intake capacity.

• Flange connection: enables quick and reliable installation and removal for inspection and cleaning.

• Precision slot control: openings down to 0.05 mm help protect downstream desalination equipment from sand, seaweed and debris.

• Wide material selection: AISI 304 / 304L / 316L and Duplex 2205 / 2507 stainless steel for seawater corrosion resistance.

• Fully customized: diameter, length, slot size, material and flange standard can be customized to match project design.

Working Principle

The passive intake screen relies on natural water flow or low differential pressure to draw water through the precision slots. The V-shaped wedge wire profile helps prevent fine particles and organisms from entering while allowing continuous water flow, reducing the load on pumps, membranes and downstream treatment equipment. Its self-cleaning slot geometry helps minimize clogging and extend maintenance intervals.

Applications

• Seawater desalination plant intake systems for reverse osmosis and thermal desalination.

• Riverbed and lake water intake for industrial and municipal water supply.

• Coastal cooling water intake for power plants.

• Low-velocity intake designs to help reduce environmental impact.

• Fish-friendly low-velocity intake designs available upon request.

Specifications

Customization and Packaging

Each intake screen is manufactured to the customer's project requirements. Finished screens are wrapped in bubble film, fixed and sealed in custom wooden crates to help minimize the risk of damage during sea or land transportation. Installation drawings and technical support are provided with the order.

FAQ

Q: Can the slot size be made as small as 0.05 mm?
A: Yes, slot openings down to 0.05 mm can be produced to meet specific filtration requirements.

Q: Which material is recommended for seawater desalination?
A: 316L and Duplex 2205 / 2507 stainless steel offer excellent corrosion resistance in seawater. The final selection depends on the operating environment and budget.

Q: Can you customize the flange size and screen diameter?
A: Yes. Diameter up to 1500 mm, length up to 6 m, flange standard and slot size can all be customized.

Q: How is the product packaged for export?
A: Each screen is wrapped in bubble film and secured in a custom wooden crate to help minimize transport damage.

Company and Inspection

We are a factory-direct manufacturer specializing in filtration screens for water, oil and gas applications. Every intake screen undergoes material inspection, slot uniformity checks and dimensional verification before packing. Contact us with your project parameters for a quotation.