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Fiberglass Grinder Manholes are a unique solution to the problem of mounting a open channel sewage grinder below grade. The all-fiberglass construction means the unit has high-strength, is watertight, and is corrosion resistant…all at about 1/10th the weight of concrete…

One of the primary advantaged of fiberglass flow metering manholes is the ability to accommodate flumes much larger than will fit inside the manhole. By being able to laminate the flume to the manhole barrel, flumes can readily extend upstream / downstream of the manhole barrel…

Reduced to its most basic elements, a Metering Manhole is a composite (FRP) manhole with a factory integrated flow element to measure the flow of water in a pipe.  Most Metering Manholes integrate flumes (typically Parshalls), although weirs and magnetic flow meters can also…