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PARSHALL FLUMES
Industry standard rectangular flume used to monitor streams and channels.
parshall flumes
Click image above to download pdf version.
Parshall Flume Product Description
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 FC220, Open Channel Flow Monitor.  For information on how to install a Parshall Flume click HERE.
Parshall Flume Flow Data
Size (inches) 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 inch Table 2 inch Table 3 inch Table 6 inch Table 9 inch Table 12 inch Table
Parshall Flume Dimensions & Prices
Prices listed are for United States and Canada only.  Call or e-mail us for pricing in other countries.
Terms and Conditions

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 $642
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 $841
01-008 3 18-3/8 12-1/4 18 7 10-3/16 24 6 12 25 1 2-1/4 $1,040
01-009 6 24-7/16 16-5/16 24 15-1/2 15-5/8 24 12 24 27 3 4-1/2 $1,746
01-010 9 34-5/8 23-1/8 34 15 22-5/8 30 24 18 33 3 4-1/2 $2,228
01-011 12 54 36 52-7/8 24 33-1/4 36 24 36 39 3 9 $4,010
PARSHALL FLUME ACCESSORIES
Parshall Flume Accessories
Monitor and display total and current flow, datalogging options available.
$Varies
RELATED PRODUCTS
Palmer-Bowlus Flume
U shaped channel flume specifically designed for monitoring flows in pipes.
$Varies  
H flume
Used to monitor free fall outflow from pipes or channels when a Palmer-Bowlus or Parshall Flume will not work.
$Varies  
FC220 Open Channel Flow Monitor
Monitor and display total and current flow, datalogging options available.
$Varies
WL16 Water Level Logger
Record water level and using a depth to flow table convert the data into flow data.
$Varies
FP111 Flow Probe
Water velocity probe for determining open channel flow.
$896
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