Galvanized Steel 1-Inch Parshall Flume

1-inch Parshall Flume

Description:

Developed in 1960 at the Colorado Agricultural Experiment Station, the 1-inch Parshall flume is commonly used to measure water flowing in creeks, furrows, irrigation canals, and channels.

Galvanized steel should never be used on sanitary flows. 

Material of Construction: 

• Galvanized steel 

Flow Rates:  

• 0.0033 - 0.1945 cfs (cubic feet / second)
• 1.460 - 87.27 gpm (US gallons / minute)
• 0.0021 - 0.1257 mid (US million gallons / day)

Flow Accuracy:

• +/- 2-5% (ASTM D1941)

Flow Formula (H = feet):

• Q (cfs) = 0.338 * H^1.55 
• Q (gpm) = 151.7 * H^1.55
• Q (mgd) = 0.2184 * H^1.55

•  Downloadable flow chart

Head:

• 0.05 - 0.70-feet
• 0.60 - 8.40-inches

Flow Dimensions:

• Inlet width:  6 19/32-inches
• Throat width:  1-inch
• Outlet width:  3 21/32-inches
• Length:  23-inches
• Inlet height:  9-inches
• Throat height:  10 1/2-inches
• Outlet height:  9 3/4-inches 

•  Downloadable dimensions drawing

Installation:

• Level:
• Front-to-back and side-to-side
• Upstream requirement:  
• Upstream channel straight at least 15-inches
• Downstream requirement:  
• Free-spilling discharge or downstream channel straight at least 5 to 20-inches

Shipment:

• 4-6 weeks from order
• Boxed
• UPS Ground (domestic) / USPS (international)
• FREE domestic shipping (select at checkout)!
• International orders require additional shipping