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Manholes
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Packaged Metering Manholes
Packaged Metering Manholes (PMMs) are a watertight and corrosion resistant way of measuring below-grade flows. Each PMM integrates a fiberglass manhole tube, flow device, cover, base, and access ladder. PMMs can be combined with other manhole units for a variety of complete solutions.
Flume Metering Manholes
Flume Metering Manholes integrate flumes to measure open-channel, below-grade flows in a single watertight and corrosion resistant solution. Each Flume Metering Manhole integrates a fiberglass manhole tube, flume, cover, base, and access ladder.
Mag Meter Manholes
Commonly used for wastewater applications, where full-pipe conditions are present, Mag Meter Manholes are a watertight and corrosion resistant. Each Mag Meter Manhole integrates a fiberglass manhole tube, cover, base, access ladder, and includes installation of a mag meter you supply.
Weir Manholes
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.
Grinder Manholes
Keep sewage flow moving smoothly by integrating an in-line grinder. Grinder Manholes start with a watertight fiberglass manhole tube that’s corrosion resistant and add a channel to mount your grinder and rail system. Both open-channel and full-pipe grinders can be integrated.
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.
Openchannelflow Fiberglass Manholes are a cost-effective solution to the need to measure or control piped flows below grade.
Openchannelflow offers a variety of different configurations to solve a variety of needs:
- Packaged Metering Manholes (PMMs)
- For measurement and sampling of full and non-full pipe flows
- PMMs can integrate Flumes, Weirs, or Mag Meters
- Grinder Manholes
- Integrating open channel grinders
- Energy Absorbing Manholes
- For slowing and conditioning high velocity flows
- Storm Water / Screenings Manholes
- For the removal of debris, oil, and other contaminants from a collection system
- Diversion Manholes
- For the controlling, directing, and distributing below-grade non-full pipe flows
Where corrosion is a concern and a standard concrete manhole won't due, Openchannelflow flow also offers standard flow through manholes. These manholes can have pipe stubs for inline connection, or they can be provided as a drop-over "dog house" to go over the line. Either style utilizes the same high strength / corrosion-resistant design!
At the core of each Openchannelflow Fiberglass Manhole is our ASTM D3753 highway rated manhole barrel. The barrel is lightweight and yet still provides high strength, as well as excellent corrosion resistance.
Once integrated into one of our manhole structures above, the resultant unit is lightweight, watertight, easy to install, and requires virtually no maintenance.
Dig it! Drop it! Done!
LOCATIONS IN ATLANTA, GA & BOISE, ID