3-inch Parshall Flume
Description:
The largest of the small Parshall flumes developed at the Colorado Agricultural Experiment Station, the 3-inch Parshall flume is commonly used to measure water flowing in creeks, furrows, irrigation canals, and channels.
The 3-inch Parshall flume is the smallest Parshall flume that should be used on sanitary flows however:
Galvanized Parshall flumes should never be used on sanitary flows.
Material of Construction:
- Galvanized steel
Flow Rates:
- 0.0280 - 1.860 cfs (cubic feet / second)
- 12.55 - 834.7 gpm (US gallons / minute)
- 0.0181 - 1.202 mgd (US million gallons / day)
Flow Accuracy:
- +/- 2-5% (ASTM D1941)
Flow Formula (H = feet):
- Q (cfs) = 0.992 * H^1.55
- Q (gpm) = 445.2 * H^1.55
- Q (mgd) = 0.6411 * H^1.55
Downloadable flow chartHead:
- 0.10 - 1.50-feet
- 1.20 - 18.00-inches
Flow Dimensions:
- Inlet width: 10 3/16-inches
- Throat width: 3-inches
- Outlet width: 7-inches
- Length: 36-inches
- Inlet height: 24-inches
- Throat height: 26 1/4-inches
- Outlet height: 25-inches
Installation:
- Level:
- Front-to-back and side-to-side
- Upstream requirement:
- Upstream channel straight at least 45-inches
- Downstream requirement:
- Free-spilling discharge or downstream channel straight at least 15 to 60-inches
Shipment:
- 4-6 weeks from order
- Boxed
- UPS Ground (domestic) / USPS (international)
- FREE domestic shipping (select at checkout)!
- International orders require additional shipping