For a drop-in-place solution to problem of how to perform inline sewage grinding, Openchannelflow offers factory integrated fiberglass Grinder Manholes. These manholes take our tried-and-true fiberglass manhole structure and integrates a custom channel to mount your grinder in.
For a Flume or Weir to work correctly, the flow must be sub-critical and tranquil. Many times, however, site conditions don’t allow the development of this type of flow. For those occasions Openchannelflow has developed fiberglass Energy Absorbing Manholes.
Storm Water / Screening Manholes are a class of structures that Openchannelflow has developed to removed trash, grit, floating debris, and oil from collection systems. Using our proven fiberglass manhole tubes, Openchannelflow integrates a screenings structure specific to your site's needs. Just like our other fiberglass manholes, ...
Openchannelflow fiberglass Packaged Metering Manholes (PMMs) solve the difficult problem of how to measure piped flows below grade. Starting with our industry leading fiberglass manhole tube, Openchannelflow integrates a flow device, cover, base, and access ladder.
Our spheres are designed to be used as a holding tank or pump tank. Unlike our ribbed tanks, these tanks may remain in the ground when empty. However, they should not be installed in high water table or high clay areas. These tanks are furnished with manhole covers and include a molded-in elevated pump stand on the bottom of the tank.