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Old 07-26-2010, 03:47 PM   #1
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rate of flow under gravity

i have read too many differing opinions on the net regarding bulkhead flow rates, so before i a drill 1" hole in my new 135 gal and screw it up... can someone please verify this for me:

rate of flow under gravity in a 1" bulkhead

3/4" - 300 gph
1" - 600 to 700
1.5" - 1400 to 1600

?
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Old 07-26-2010, 06:30 PM   #2
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use this site but its US gallons
or

3/4" =660 US 550 UK
1" =960 US 799 UK
1 1/2" = 1500 US 1250 UK

There's not too many english people on this forum so remember most gallons are American
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Old 07-27-2010, 02:14 AM   #3
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Thanks David!
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