Galvanized Steel 18-Inch Parshall Flume

18-inch Parshall Flume

Description:

The 18-inch Parshall flume is useful for measuring both water rights / irrigation flows as well as surface water flows.

Galvanized steel should never be used to measure sanitary flows.

Material of Construction:  

• Galvanized steel

Flow Rates:  

• 0.1738 - 24.56 cfs (cubic feet / second)
• 78.02 - 11,021 gpm (US gallons / minute)
• 0.1124 - 15.87 mgd (US million gallons / day)

Flow Accuracy:

• +/- 2-5% (ASTM D1941)

Flow Formula (H = feet):

• Q (cfs) = 6 * H^1.538 
• Q (gpm) = 2,693 * H^1.538
• Q (mgd) = 3.878 * H^1.538

•  Downloadable flow chart

Head:

• 0.10 - 2.50-feet
• 1.20 - 30.00-inches

Flow Dimensions:

• Inlet width:  40 3/8-inches
• Throat width:  18-inches
• Outlet width:  30-inches
• Length:  115 7/8-inches
• Inlet height:  36-inches
• Throat height:  45-inches
• Outlet height:  39-inches 

•  Downloadable dimensions drawing

Installation:

• Level:
• Front-to-back and side-to-side
• Upstream requirement:  
• Upstream channel straight at least 22 1/2-feet
• Downstream requirement:  
• Free-spilling discharge or downstream channel straight at least 7 1/2 to 30-feet

Shipment:

• 5-7 weeks from order
• Palleted
• Box truck
• Get FREE domestic shipping (select at checkout)!
• Appointment delivery included (get it delivered when it's convenient for YOU)!
• Make sure you can offload prior to ordering
• International orders require additional shipping