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How to Calculate the FLOW RATE from Your WATER PUMP
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- Опубліковано 5 гру 2016
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There are certain times when you’ll need to calculate the flow rate in Gallons per Minute (GPM) from your well pump. It's actually a fairly easy process and calculation. First, if you have a filter or Mazzei with bypass as I have here, before the pressure tank, you will need to remove the filter or put the Mazzei fully on bypass before proceeding.
1) Run water either at a faucet or by running water through your water treatment equipment until the pump turns on. You will hear a click from the control to tell you when the pump has turned on.
2) Shut off the flow of water and time how long it takes (in seconds) for the pump to turn off. Write down this time.
3) Get something to measure an mount of water, like this 5 gallon jug, and run water from the hose bib at the base of the pressure tank until the pump comes on again, Write down the number of gallons.
4) Calculate the flow rate by inserting the info into this formula
Flow Rate (Gallons Per Minute) GPM = # of gallons / seconds/60
For example if you measured 6 gallons and it took 45 seconds it would be:
Flow Rate = 6 divided by 45/60 or 6 / .75 = 8 gpm flow rate.
5) If you removed a filter or put a Mazzei injector on bypass do not forget to put it back on line.
Please share this video • How to Calculate the F...
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thewaterfilter...
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Please comment or ask questions below. #garythewaterguy #waterfiltration
What consideration for filter if we also have manganese as well as iron and sulfur? (Our toilet tanks get some light rust but mostly Darla brown-black layer I suspect is from manganese.
Some iron filters also remove manganese. I suggest you have a water analysis done and email it to us complete the info on this form and submit it to us. waterestore.com/pages/free-water-test-evaluation-the-water-estore
Update from my last comment about a month ago, I replaced my pressure tank and the steel pipe that was supplying water to my house from the tank. The pipe was about 50 to 60 percent restricted from mineral and scale build up. The well tee was also restricted. My flow rate went from 6 gpm to 8gpm. Water at my barn now gushes out when before it has a very low flow
Glad to hear!
Why not just fill a 5 gal bucket and time that to fill, and divide time to fill by 60 so 20 sec to fill divide by 60 is 3 and times 5 gallons is 15 GPM
no as your first 5 gallon the pressure (PSI) from the pump is at its max, if you run it longer the PSI goes down until it reaches it’s min then pump starts again therefore the flow too. As you know the pump is not always active, it will kick in once pressure reaches min.
I just bought a home that runs on well water. The pump is under a plastic rock that is about 2 feet high. Where can I find the pressure tank or can I just do this test right at the faucet attached to the pump?
The faucet at the pump should work.
I have to have my well water tested 2 times a year by the county. I am having problems with bad bacteria in my water. If I add the UV ultraviolet sterilizer system to my well after shocking it with chlorine before installing it. Will I continue to have problems with the tests conducted by the county coming up positive. really need to know if UV ultraviolet sterilizer system will kill the coliform or E coli and show a negative result on the lab test.
Hello There . I have a quick question for you . The hose you used to fill that jug up looks to be 1/2 inch and you received 9 gallons in 43 seconds , what would happen if you used a 3/4 in hose to fill your jug up would you get more than 9 gallons in 43 seconds?
No, the maximum flow rate 1/2" can handle is 14 gpm. But if we had more than 14, that 1/2" hosew would restrict it.
so if the well had a half horse pump and it was exchanged for a horse pump, wouldn't the flow rate change?
Great video
On my well the pump TAKES 6.3 SECONDS to fill up a baket of 10Litres (6.3/60=0105 NOW my 10Litres Divided by 0.105= 95.2380Litres By ??????????? what exacly. Can anyone explain to me ,Im a bit confussed here. Thanks
So you are getting 2.6 gallons in 6.3 seconds. Since that is 1/10 of a minute your flow rate is approximately 26 gallons per minute.
Many thanks I just wanted to confirm my suspicious,someone give the formula as follows: Time to fill recipient /60/by the size of recipient. I was convinced that was wrong and you have confirmed. Thanks
@@wilmer2754 that formula is close but incorrect. Gallons times 60 over the number of seconds to produce the gallons = gallons per minute.
Ok wait, you are measuring the flow rate of your "pressure tank" at it max pressure, not the flow rate of the pump. Flow rate of pump would be measuring the actual rate it pumps water into the pressure tank. This is not what is happening in your test here.
@@GarytheWaterGuy 👍👍🙂
He is measuring the pump, not the tank rate. Took 43 seconds to fill 9 gallons of water from the pump into the tank.