Manhole Manufacturers: Comparing Packaged Metering Manholes

As we’ve seen before in our comparison of H-flume and Parshall flume manufacturers, not all “equal” products are just that…equal.

Here we compare the construction details of Packaged Metering Manholes. Packaged Metering Manholes take proven open channel flumes (Parshall, Palmer Bowlus, Cutthroat, etc.) and factory integrates them in to fiberglass manhole structures. The result is a single-piece, watertight, and corrosion resistant. Factory integration means that the unit is ready for immediate installation once it arrives at the job site.

Packaged Metering Manholes are commonly used to monitor pre-treatment discharges and municipal sanitary sewer flows. They can be used on line size from 4 to 60-inches and can be configured for traffic or non-traffic areas, as the application requries.

As before, both manholes are constructed for shipment to the end-users. Neither unit is a “show” model prettied up for the occasion.

Fiberglas Domed Top

VPC domed top manhole. Note the difference in color between the top and the manhole barrel as well as the odd, segmented top geometry Open VPC domed top manhole

Domed Top Packaged Metering Manhole from Virtual Polymer Compounds

Fiberglass Packaged Flow Metering Manhole with Domed Top from Openchannelflow

Domed top Packged Metering Manhole from Openchannelflow

Open Domed Top Packaged Metering Manhole from Openchannelflow

H-20 Manhole Reducer

H-20 manhole reducer from Virtual Polymer Compounds

H-20 Manhole Reducer from Virtual Polymer Compounds

wide opening H-20 reducer top on Openchannelflow Packaged Flow Metering Manhole

H-20 Manhole Reducer from Openchannelflow

Metering Manhole Interior

VPC Packaged Metering Manhole during installation - note that grout and debris is from installing contractor and not indicative of VPC construction

Interior of VPC Packaged Metering Manhole with a Parshall Flume

Light colored interior of Openchannelflow Packaged Metering Manhole with factory integrated Parshall flume after installation

Interior of Openchanneflow Packaged Metering Manhole with a Parshall Flume

The pictures above tell a compelling story. While the they show metering manholes that are similar in their intended use, it is clear that Openchannelflow sweats the details.

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