 Dataloggers, Sensors & Control Systems |
Toll Free (800) 948-6236 |
Dataloggers, Sensors & Control Systems |
Toll Free (800) 948-6236 |
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Fiberglass & Steel Flumes & WeirsWe sell, design and install many different styles and types of flumes or weirs. We can send you a pre-built fiberglass or steel flume or weir and we can build a flume or weir at your location from concrete. We sell flumes from Nu-Way and FreeFlow, Inc. There is a free ramp flume design software entilted Winflume available by clicking here. There are many types of flumes to choose from; including parshall, ramp flume, palmer-bowlus, v-notch, h-flume, trapezoidal and cutthroat. There is also the popular palmer-bowlus flume that is used in waste water and storm water applications that require attachment to pipes. We can supply nearly any type of flume that you require. Below are a few of the more popular types and a brief description. If you would like a price quote just give us a call or shoot us an email. Here is a link to the USBR Water Measurement Manual on-line, you will find a lot of useful information on the measurement of water. (Bureau of Reclamation) Click here to get our Flumes Brochure. Ramp Flume - Replogle Flume or Long-Throated FlumeThe ramp flume is a very popular flume used mostly in irrigation applications. It is a flume that functions more like a weir. It is often used in areas with low drop (flat ditches). We offer a galvanized steel ramp flume that is made by Nu-Way flumes and we can build any size of ramp flume from steel or concrete. There are currently 4 pre-made sizes available:
The size references the maximum amount of flow that the flume can measure. You can download a brochure below that gives dimensions and explains more about the ramp flume. These flumes are generally in stock and ship within 7 days of an order, but please check with us for stock status. Using ramp flume design software we can design and build any size ramp flume to meet your needs. We can build flumes in steel or concrete. We can also create the drawings based on your ditch and flow requirements and you can arrange to build your flume on your own.
(click the images to enlarge)
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| Flume Length In. | Throat Width In. | Flume Depth in. | Max Flow GPM/CFS |
| 18 | 1 | 6 | 56 / 0.12 |
| 18 | 2 | 6 | 114 / 0.25 |
| 18 | 4 | 6 | 223 / 0.49 |
| 18 | 8 | 6 | 474 / 1.05 |
| 36 | 2 | 12 | 322 / 0.71 |
| 36 | 4 | 12 | 655 / 1.46 |
| 36 | 8 | 12 | 1,333 / 2.97 |
| 36 | 16 | 12 | 2,712 / 6.04 |
| 54 | 3 | 18 | 866 / 1.93 |
| 54 | 6 | 18 | 1,763 / 3.92 |
| 54 | 12 | 18 | 3,588 / 7.99 |
| 54 | 24 | 18 | 7,301 / 16.26 |
| 108 | 12 | 36 | 6,932 / 15.44 |
| 108 | 24 | 36 | 14,106 / 31.42 |
| 108 | 48 | 36 | 28,699 / 63.94 |
| 108 | 72 | 36 | 43,494 / 96.9 |
Download Cutthroat Drawing
Other Flumes Available:
Download - Flume Flyer or Water Monitoring & Control Flyer
Parshall Flume (Steel or Fiberglass) 
The Palmer-Bowlus flume was invented by Harold Palmer and Fred Bowlus. The flume was developed in the mid-1930's. The flume was specifically designed to be a simple and effective wastewater flow-measuring device. The flume is essentially a restriction in the channel and is sized according to the width of the flume often the size of the pipe it is attaching to, but not always.
The cutthroat flume consists of only a converging inlet section and
a diverging outlet section. (see picture on left) The one varying dimension
is the flume size or throat width. These flumes are able to operate under free flow conditions with submergence ratios up to 79-88% depending upon the flume size. If the flume becomes submerged you can make a second measurement at the effluent and adjust the flow equation to gain an accurate flow reading.