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Cutthroat Flumes
For Applications with Flat Gradient Channels
The Cutthroat flume was developed in the mid-1960’s by the Utah State University Water Research Laboratory. The flume’s name comes from the absence of the parallel-wall throat section that is included on the Parshall flume. Originally used in stream gauging and agricultural applications, cutthroat flumes are now used for other applications as well.
Cutthroat Flume Advantages
Cutthroat flumes were designed to overcome the limitations Parshall flumes were faced with in flat gradient channels. Because of its unique characteristics, cutthroat flumes offer several distinct advantages, such as:
- Simple form
- Constant dimensional configuration
- Easily scalable to create intermediate sizes
- Easy silt and debris passage with straight through bottom
- Available in multiple sizes with many options
- Able to operate under free flow conditions with submergence ratios up to 79-88% (depending upon the flume size)
Cut Throat Flume Design
TRACOM understands Cutthroat flumes often require additional parts and accessories. This is why we offer certain options when purchasing flumes. To make the most out of your Cutthroat flume, you can also request the following:
- Ultrasonic mounting brackets
- Bubble tubes
- Sample tubes
- Submerged probe cavities
- Stilling wells (detached)
- Staff gauges
- Removable probe holders
- Inlet and outlet end adapters
- Pipe stubs
- Flanged end connections
- Fiberglass grating
- Riser boxes
- Multi-piece construction
- Chemically resistant gel coat
Cutthroat Flume Flume Sizes & Flow Ranges
Cutthroat flumes are sized by throat width and overall length. A number of styles are commercially available, including the most commonly used types listed in the chart below. TRACOM can also design intermediate and custom sized flumes if you do not see the specific size you need in the chart.
Size & Style | Recommended Flow Rates |
---|---|
18” L x 1” W | 2 – 56 GPM |
18” L x 2” W | 5 – 144 GPM |
18” L x 4” W | 9 – 223 GPM |
18” L x 8” W | 19 – 474 GPM |
36” L x 2” W | 5 – 322 GPM |
36” L x 4” W | 10 – 655 GPM |
36” L x 8” W | 19 – 1,333 GPM |
36” L x 16” W | 39 – 2,712 GPM |
54” L x 3” W | 8 – 866 GPM |
54” L x 6” W | 17 – 1,763 GPM |
54” L x 12” W | 34 – 3,588 GPM |
54” L x 24” W | 69 – 7,301 GPM |
108” L x 12” W | 128 – 6,932 GPM |
108” L x 24” W | 260 – 14,106 GPM |
108” L x 48 ” W | 528 – 28,699 GPM |
108” L x 72” W | 800 – 43,494 GPM |
Cutthroat Flume Uses
Cutthroat flumes have many unique characteristics and are a beneficial component to wastewater management systems. Designed for flat gradient channels, cutthroat flumes are often used for:
- Stream Gauging
- Agricultural Applications
- Sanitary Applications
- Flow Splitting Applications
To learn more about Cutthroat flumes and how they can help your wastewater management system, contact TRACOM. With over 30 years of industry experience, our specialists are knowledgeable and look forward to answering your fiberglass flume questions.
Cutthroat Flume Technical Details
- Ultrasonic mounting brackets
- Bubble tubes
- Sample tubes
- Submerged probe cavities
- Stilling wells (attached and detached)
- Staff gauges
- Removable probe holders
- Inlet and outlet bulkheads
- Pipe stubs
- Flanged end connections
- FRP grating
- Riser boxes
- Multi-piece construction
- Chemically resistant gel coat
- 18 inch L x 1 inch W Cutthroat Flume
- 18 inch L x 2 inch W Cutthroat Flume
- 18 inch L x 4 inch W Cutthroat Flume
- 18 inch L x 8 inch W Cutthroat Flume
- 18 inch L X 108 inch W Cutthroat Flume
- 36 inch L x 2 inch W Cutthroat Flume
- 36 inch L x 4 inch W Cutthroat Flume
- 36 inch L x 8 inch W Cutthroat Flume
- 36 inch L x 16 inch W Cutthroat Flume
- 54 inch L x 3 inch W Cutthroat Flume
- 54 inch L x 6 inch W Cutthroat Flume
- 54 inch L x 12 inch W Cutthroat Flume
- 54 inch L x 24 inch W Cutthroat Flume
- 108 inch L x 12 inch W Cutthroat Flume
- 108 inch L x 24 inch W Cutthroat Flume
- 108 inch L x 48 inch W Cutthroat Flume
- 108 inch L x 72 inch W Cutthroat Flume
- 18 inch x 2 inch Cutthroat Flume
- 18 inch x 4 inch Cutthroat Flume
- 18 inch x 8 inch Cutthroat Flume
- 36 inch x 4 inch Cutthroat Flume
- 36 inch x 8 inch Cutthroat Flume
- 36 inch x 16 inch Cutthroat Flume
- 54 inch x 3 inch Cutthroat Flume
- 54 inch x 6 inch Cutthroat Flume
- 54 inch x 9 inch Cutthroat Flume
- 54 inch x 12 inch Cutthroat Flume
- 54 inch x 24 inch Cutthroat Flume
- 108 inch x 12 inch Cutthroat Flume
- 108 inch x 24 inch Cutthroat Flume
- 108 inch x 36 inch Cutthroat Flume
- 108 inch x 48 inch Cutthroat Flume
- 108 inch x 72 inch Cutthroat Flume