Many years after inventing Vee-Wire®, we at Johnson Screens leveraged this technology to introduce a new innovation in 1968: our passive intake screen. 50+ years and over 4,000 installations later, we continue to lead the way in static intake screening equipment.

Johnson Screens passive intake screens provide uninterrupted water withdrawal from rivers, lakes, and oceans. Initially, our High-Capacity intake model set the industry standard when it came to efficiency. The combination of our non-plugging Vee-Wire® design and our patented internal flow modifiers provided a high open area while maintaining the lowest entrance velocity and pressure drop on the market. Additionally, our passive intake screens have no submerged moving parts that could break down or wear out and incorporate the use of the Hydroburst air backwash cleaning system, guaranteeing minimal maintenance.

When the industry demanded a shallow water screen, we developed our Half-Screen model to function identically to the High Capacity screen but with half of the required water depth. Most recently in 2018, we improved upon our existing models to design the Max-Flow™ intake system. With 40% greater flow capacity than previous models and a newly redesigned internal modifier, the Max-Flow™ is the culmination of over a half century of passive intake expertise.

Available in a variety of materials including stainless steel, super duplex, and NSF-certified Z-Alloy, every system is fully compliant with Section 316(b) of the Clean Water Act, and is a proven fish-safe intake solution that reduces impingement while protecting aquatic life. Fit for use in power plants, desalination processing, cooling stations, and so much more, Johnson Screens passive intake systems are the clear choice across industries.

An Eco-Friendly Solution to the Zebra Mussels Problem

Johnson Screens introduced an innovative approach to combat the Zebra Mussel infestation, which is detrimental for water intake systems.

We created an eco-friendly solution by introducing water intake screens constructed with patented Z-Alloy wire.

Since the first installation in the J.H. Campbell Power Plant in 1993, we’ve seen the effectiveness of the Z-Alloy design provide years of Zebra Mussel protection.

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Max-Flow™ Passive Intake

Max-Flow™ Passive Intake

Designed with efficiency in mind, the patented design of the Max-Flow evenly distributes water flow and reduces the internal velocity to 6 in/s or less, which increases the flow capacity over previous passive intake designs by up to 40%. Available in all materials, including stainless steel, super duplex, and copper nickel Z-Alloy.

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Passive Half Intake Screen

Passive Half Intake Screen

Featuring the same functionality and control of flow distribution as the standard Johnson Screens passive intake screen systems, our patented passive half intake design eliminates half of the depth needed to achieve the same flow rate as traditional passive intake solutions.

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Z-Alloy Screen Coatings

Z-Alloy Screen Coatings

In the early 1990's, Johnson Screens introduced Z-Alloy for intake screens that inhibit the attachment of zebra mussels to passive intake screens, and since then has expanded installations to seawater applications. Constructed with solid copper nickel wire, Johnson Screens intakes do not degrade and will provide years of Zebra Mussel protection if kept clean.

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Clean Water Act Section 316(b)

Clean Water Act Section 316(b)

In 2014, the final rule under section 316(b) of the Clean Water Act was issued in the interest of reducing fish impingement and entrainment. To that end, Johnson Screens is proud to offer a line of passive intake screening solutions that is fully compliant with this legislation.

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Flat Panel Fish Diversion Screens

Flat Panel Fish Diversion Screens

Vee-Wire screens have been identified as the best available technology by the EPA and the NMFS. The non-plugging high open area design meets the most demanding flow requirements while the smooth flat surface provides a safe barrier for fish and fish egg protection.

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