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When using a flume to measure pipe flow, the incoming pipe slope is a critical factor. Too great a slope and the flow into the flume will be too energetic and the flume won't produce accurate results.

Fiberglass Flow Metering Manholes from Openchannelflow are a great solution to the problem of needing to measuring below ground flows. The manholes are light weight, corrosion resistant, watertight, and come with flume, weir, or mag meter already factory integrated.

It's a common for a treatment system operator need to measure the flow of sewage in a wastewater collection system. These flows are below grade and are usually under open channel (non-full pipe) conditions. In some cases, existing manholes or vaults can be used. Into these a…

Most of the flume styles currently used to measure the flow of water in non-full pipes were not originally conceived to handle such flows. While engineered transitions – end adapters – have been developed for some of these flumes, many installations have site-formed…

For a flume to operate correctly, the approaching flows must be subcritical and well developed. Sometimes, however, the approaching flow has high velocity or is turbulent due to steep pipe slopes or pumped flow. To control and condition these flows, Openchannelflow offers Energy…

Publically owned wastewater treatment plants (POTWs) collect wastewater from homes, commercial and industrial facilities and remove harmful organisms and other pollutants so that the treated water can be returned to the environment without impact the receiving waters. As part of…

Covers are used over flumes and weir boxes for a number of different reasons: eliminating inflow, aesthetics, operator safety, foam, sensor protection, or containing foaming / splashing flows. To meet these applications, Openchannelflow offers solid and transparent covers in both…

When comparing flumes from different companies ask one simple question first:

We are frequently asked if a stilling well can or should be used on a flume at the headworks of a wastewater treatment plant (WWTP). The answer is: no, a stilling well should NOT be used at a headworks – even if the flow conditions are turbulent.

Over time a primary device’s (flume or weir) staff gauge may need to be replaced. Wear, vandalism, nature of the flow stream, and device construction can all play parts in a gauge needing to be replaced. When replacing a gauge there are two styles available: adhesive gauges and…

Wing walls are nothing more that flat (typically) walls that extend from the channel banks to the flume. Their purpose is to direct flow into the flume in a controlled manner.

The 60-inch Parshall Flume is a large flume, usually shipped in two pieces, that is primarily used to measure flows for water rights and watershed measurement as well as at sewage treatment plants. The 60-inch Parshall Flume is useful in a number of applications: