This website uses a variety of cookies, which you consent to if you continue to use this site. You can read our Privacy Policy for
details about how these cookies are used, and to grant or withdraw your consent for certain types of cookies.
I need to control or divert water
Energy Absorbing Manholes
When you’re looking for an economical option to slow the flow through a pipe system, consider Energy Absorbing Manholes (EAMs). Each watertight and corrosion resistant unit includes a fiberglass manhole tube, energy-absorbing structure, mounting flange, cover, and base.
Diversion Manholes
Diversion Manholes allow you to control, direct, and distribute underground flows in pipes (that don’t run full). Starting with our watertight and corrosion-resistant fiberglass manhole tube, each unit can be configured with interior drops, Y-channels, or J-bends to best meet your needs.
Storm Water Manholes
Use Storm Water Manholes to remove trash, floating debris, and contaminants from collection systems. Static or removable screening structures can be integrated into a fiberglass manhole tube for a watertight solution that’s also corrosion resistant.
Manhole Accessories
Fiberglass manholes can be customized with a variety of accessories to meet the specific needs of your job. Find solutions for air circulation, depth adjustments, equipment or mounting panels, storage, work surfaces, and more.
Don't see what you're looking for?
Not sure where to start?
Get industry-leading technical guidance
Your needs are unique and Openchannelflow strives to meet you where you are. Try our Solve A Problem section where we walk you through some common problems and ways to solve them.
If you already have a good idea what you need, but just need more specifics, find exactly what you need in the Research A Solution section.
Contact Us
LOCATIONS IN ATLANTA, GA & BOISE, ID