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# Open Horizontal Pipes - Discharge Length vs. Volume Flow

## Discharge length vs. volume flow from water filled horizontal pipes.

Discharge volume and maximum length for horizontal pipes.

• 1 gal (US)/min =6.30888x10-5 m3/s = 0.227 m3/h = 0.06309 dm3(litre)/s = 2.228x10-3 ft3/s = 0.1337 ft3/min = 0.8327 Imperial gal (UK)/min
• 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft

### Example - Horizontal Pipe and Length of Water Discharge

If 100 gpm water is discharged from a 2 1/2" horizontal pipe

- the discharge length can be estimated from the chart above to approximately 13 inches.

### Example - Estimating Volume Flow with Discharge Length

The volume flow  from a pipe can be estimated by measuring the horizontal length of the discharging flow.

If the discharge length from a 2 1/2" horizontal pipe is measured to 13 inches

- the volume flow discharged can be estimated to approximately 100 gpm.

## Related Topics

• ### Flow Measurements

Flow metering principles - Orifice, Venturi, Flow Nozzles, Pitot Tubes, Target, Variable Area, Positive Displacement, Turbine, Vortex, Electromagnetic, Ultrasonic Doppler, Ultrasonic Time-of-travel, Mass Coriolis, Mass Thermal, Weir V-notch, Flume Parshall and Sluice Gate flow meters and more.
• ### Water Systems

Design of hot and cold water service and utility systems with properties, capacities, sizing of pipe lines and more.

## Related Documents

• ### Hoses - Water Volume Discharge Flow vs. Pressure

Water discharge through hoses - pressure ranging 10 - 200 psi (0.75 - 14 bar).
• ### Jet Propulsion

Calculate the propulsive discharge force or thrust induced by an incompressible jet flow.
• ### Liquid Flow from Containers - Emptying Time

Calculate liquid velocity, volume flow and draining time when emptying a container.
• ### Nozzles - Water Discharge Capacities

Discharge capacities of water nozzles.
• ### Vertical Pipes - Discharge Height vs. Volume Flow

Volume flow and discharge height from vertical water pipes.
• ### Water Systems - Maximum Flow Velocities

Water velocities in pipes and tubes should not exceed certain limits.

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## Citation

• The Engineering ToolBox (2009). Open Horizontal Pipes - Discharge Length vs. Volume Flow. [online] Available at: https://www.engineeringtoolbox.com/horizontal-pipe-discharge-d_1528.html [Accessed Day Month Year].

Modify the access date according your visit.

6.3.17

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