PARSHALL FLUMES
Diagrams, Dimensions & Flow Data

parshall flumes
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The Parshall flume was developed by the US Soil Conservation Service in the 1920’s to measure irrigation water flow.  Parshall flumes principle advantages include low head loss, self cleaning capability, and their ability to withstand relatively high degrees of submergence without affecting the rate of flow.  Parshall flumes are best used in channels having rectangular cross-sections.  Parshall Flumes are the standard for most waste water treatment plant influent and effluents.  Parshall flumes can be use with non-full pipes if a suitable transition is provided, however extreme care must be taken when mating Parshall flumes to circular channels.  For more information on monitoring Parshall flumes see the FC200, Open Channel Flow Monitor.  For information on how to install a Parshall Flume click HERE.

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Table of Dimensions
Part # W A 2/3A B C D E F G J K N Price
01-006 1 14-9/32 9-17/32 14 3-21/32 6-19/32 9 3 8 9-1/4 3/4 1-1/8 $583
01-007 2 16-5/16 10-7/8 16 5-5/16 8-13/32 12 4-1/2 10 12-7/8 7/8 1-11/16 $765
01-008 3 18-3/8 12-1/4 18 7 10-3/16 24 6 12 25 1 2-1/4 $945
01-009 6 24-7/16 16-5/16 24 15-1/2 15-5/8 24 12 24 27 3 4-1/2 $1,589
01-010 9 34-5/8 23-1/8 34 15 22-5/8 30 24 18 33 3 4-1/2 $2,028
01-011 12 54 36 52-7/8 24 33-1/4 36 24 36 39 3 9 $3,651
Prices listed are for United States and Canada only.  Call or e-mail us for pricing in other countries.
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Table of Flow Data
Size 1" 2" 3" 6" 9" 12"
Min CFS 0.001 0.001 0.001 0.001 0.005 0.006
Min MGD 0.001 0.001 0.001 0.001 0.003 0.004
Max CFS 0.22 0.68 2.91 6.16 12.51 21.68
Max MGD 0.14 0.44 1.88 3.98 8.09 14.01
Complete Flow Table
NOTE: Flow tables are only valid to the E (height)
measurement of the Parshall Flume.
1" Table 2" Table 3" Table 6" Table 9" Table 12" Table
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