When it comes to maintaining a home, there are certain times when you'll want to know the pump flow of a particular plumbing apparatus. Pump flow measures the amount of fluid that moves through pipes over a period of time. This measurement is usually taken in gallons per hour or GPH. For instance, if you have a water feature that has a filter, you'll want to know the pump flow to determine how often the water refreshes.
Things You'll Need
- 5-gallon bucket with measurements
- Stop watch
Collect liquid for one minute in a five-gallon bucket. Be sure that the bucket has measurements on the inside or outside of the bucket so that you'll be able to read the results.
Determine how much liquid was collected. As an example, say you have a pond feature. You placed the hose into your bucket and turned on the pump feature. It resulted in one gallon. This is the amount of flow.
Multiply the amount of flow by 60. Because you let the pump work for 1 minute, you need to multiply the amount of flow by 60 in order to get a gallons per hour or GPH figure. The math in the example would be: 1 gallon per minute x 60 = 60 GPH.
Amount of flow x 1 hour of time = Gallons per Hour
Tips & Warnings
- If you are measuring something that has an extremely fast pump flow, use a rate of 10, 20, or 30 seconds to get your measurement. Just remember to adjust your calculation so that you are getting a full GPH estimate. As an example, if you collected liquid for 30 seconds, then you would need to multiply your result by 120 because there are 120 30-second segments within an hour.
- Photo Credit fountain. water feature. water cascade image by L. Shat from Fotolia.com
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