While not as varied as H flumes are in terms of their mounted, Parshall flumes can be installed in a number of creative ways to meet your flow measurement needs.

The flumes are suscessfully used in:  

• Above grade
• At grade
• Below grade
• And manhole installations

Versitle in instalation and widely used, the Parshall flume is most famous of the short throated class of flumes and is widely used to measure both surface and wastewater flows. 

The wide range of mounting possibilities, can, however, lead to some confusion. With that in mind, we present below a series of different Parshall flume installations to help installers see what configuraitons have worked in other applications in the past.

Elevated Parshall flume - not ideal for flow meter calibration

 

Parshall flume with adjustable, elevated support legs

 

Above grade Parshall flume installation

 

Cold weather Parshall flume installed on grade

 

Headworks Parshall flume installed for free spilling discharge

 

Cooling water parshall flume installed in an earthen channel

 

Packed earth installation of a Parshall flume

 

Earth embedded Parshall flume - also a cautionary example of why to not use thin gauge flumes

 

Parshall flume cast into a concrete channel at a WWTP

 

120-inch Parshall flume being cast into a concrete channel

 

Below grade Parshall flume chamber at a WWTP headworks

 

Near grade Parshall flume vault

 

Parshall flume installed below grade in a concrete chamber

 

3-inch Parshall flume factory installed in a fiberglass Packaged Metering Manhole

 

Domed top Packaged Metering Manhole with integral Parshall flume mounted to slab

 

Fiberglass manholes during installation

We hope that these photos help to answer some of the questions that you may have.  We realized, though, that there are many, many more ways to install a Parshall flume and we are happy to answer any questions that you may have.

Remember:  WE ARE HERE TO HELP!