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Subject & Message
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Posted By
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How large of a overflow drain do I need?

8/2/2002 1:55:10 AM
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andy
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This is a problem that I have been working with that has caused me some grief. I need to know the minnimum diameter of an overflow drain to accomidate the amount of water that is being pumped into the tank.
For example if I am pumping in 1 gallon of water a minute into a tank and the overflow drain is located at the surface of the water, what is the smallest diameter pipe that will accomedate the level of water coming in?
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RE: How large of a overflow drain do I need?

8/2/2002 1:59:55 AM
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poolman
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I have run into this problem myself. The best advice that I can give to you is to use a pipe about 1/3 larger pipe to drain the tank than that of the pipe or hose that is feeding into it. I realize that this is crude and will not work if the inlet is under high pressure.
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RE: How large of a overflow drain do I need?

4/12/2004 8:13:48 AM
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Groove
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From what I know, a properly set up 1" Durso overflow will drain 600 gallons an hour. I properly set up 1.5" Durso overflow will flow 1200-1300 gph. Search on the word durso to find out more.
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