ATLAS-SSI is a leading manufacturer of high-quality Thru-Flow water screens, ancillary equipment, and on-site services in North America. Our water screens clean the water, reduce ecological impacts, and are compliant with 316(b).

The thru-flow screen is the most common type of traveling water screen and comes in a two-post or four-post design. We have engineered both to provide superior performance while requiring low maintenance.

Screen construction options range from coated carbon steel, stainless steel, and non-metallic to meet the harshest environmental conditions.

From supplying traveling screens for a new plant intake to retrofitting existing ones, we have the experience and knowledge to provide you with the highest quality product that will meet your every need.


  • Simple construction
  • Self-cleaning
  • We can design for 24-hour operation
  • Multiple speeds and shaft-mounted drive available
  • Designed to have complete parts interchangeability with existing thru-flow screens
  • Automatic differential controls to protect the unit against high debris loading


  • Save time
  • Save money
  • Our work crews travel all over the U.S.
  • We provide our customers with the total package
  • Our technicians and certified divers are ready to work on topside or underwater equipment
  • Our deliveries are shorter than most

Frequently Asked Questions About Thru-Flow Water Screens

What kind of system controls are available for Atlas-SSI Thru-Flow water screens?

We offer our customers the option to upgrade to SmartScreen Technology® system controls that offer a user-friendly interface and real-time monitoring.

Does Atlas-SSI offer 316(b) fish-friendly solutions?

Yes, we provide solutions that meet 316(b). When we design new or rebuild existing Thru-Flow water screens, our expert engineers consider a wide range of parameters such as water conditions, debris removal, fish species, and screening technology.

Related Resources

Water Intake Screen Brochure

Discover the features of Atlas-SSI water intake screen solutions and the benefits you’ll get from installing one.

Screen Rebuild at A Power Plant [Case Study]

Learn how the Atlas-SSI team rebuilt a raw water intake screen in a record nine days for a nuclear power plant.

East River Generating Station [Case Study]

Read how Atlas-SSI helped determine the cause of a water intake screen failure and engineered a new one that prevented a similar situation from occurring.