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.
Category - Packaged Metering Manholes
Blog
Installing a Flume in an Existing Metering Manhole
Measure Twice, Build Once: Getting Elevations Right on FRP Manholes
The old adage of taking measuring twice and cutting once has never been so appropriate as it is when determining the depth of a fiberglass manhole. Although fiberglass (FRP) manholes posses a wealth of benefits; modularity is not one of them. Because all of the…
Fiberglass Diversion Manholes
Fiberglass Diversion Manholes are way of controlling open channel flows in a factory integrated design. Utilizing the core design of standard Flow Metering Manholes, Diversion Manholes provide corrosion resistance, speed of installation, and ease of use. Dig It!…
Integrating Large Flumes into Packaged Metering Manholes
One of the oft-mentioned benefits Packaged Metering Manholes is the ability to integrate flumes and other structures that are larger than the manhole barrel diameter, but what exactly does this mean?
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…
Manhole Benches and Metering Manholes
Let’s be honest: metering manholes (from an upfront, material cost standpoint) aren’t cheap. While no one would argue that metering manholes don't provide substantial benefit to their users, part of what you are paying for is a unit that is ready for…
Openchannelflow Welcomes Former Free Flow Customers
With Free Flow, Inc. (formerly of Gretna, NE) closing last year, Openchannelflow would like to extend a welcome to its former customers who are in need of assistance with their flow monitoring needs. Free Flow was primarily know for three product lines: Flumes (Parshall /…
Benefits of Packaged Metering Manholes to Operators
For operators who use them, Fiberglass Packaged Metering Manholes are a great solution to the problem of measuring piped flows below grad. They provide a safe, convenient place in which accurate flow measurement can take place. Improved measurment accuracy, installation…
Benefits of Packaged Metering Manholes to Consulting Engineers
Fiberglass Packaged Metering Manholes are a great solution to the problem of measuring piped flows below grade and provide a unique set of benefits to consulting engineers who specify them. To the consulting engineer these benefits include: installation / measurement…
Who Are the Leading Manufacturers of Flumes, Manholes, and Weirs
Every year at Openchannelflow we talk with several hundred consultants, researchers, contractors and end-users about their flow monitoring needs. Because we work extremely hard at answering all questions "flow” on this web site – and this blog in particular - we are…
Parshall Flume Metering Manholes
Parshall Flume Metering Manholes are an excellent solution to the problem of how to monitor below-grade piped flows. Integrating the popular Parshall flume into a fiberglass manhole, Parshall Flume Metering Manholes are complete, factory-integrated structures capable of…
Trapezoidal Flumes for Industrial Pretreatment Discharges
Trapezoidal flumes are popular choice when industrial users need to measure pretreatment discharges. The flumes provide: Good resistance to submergence Pass solids and sediments well Able to accurately measure low flows Suiteable for sanitary / mixed industrial flow streams…
LOCATIONS IN ATLANTA, GA & BOISE, ID