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View Full Version : 2 1" bulkheads to feed one 2" intake?


adw
02/01/2007, 01:23 PM
Would two one inch bulkheads be enough to feed a Dart with a 2" intake?

HippieSmell
02/01/2007, 01:35 PM
If you want to match the gph potential of a 2" pipe, you will need two 1.5" pipes.

adw
02/01/2007, 01:42 PM
Would 3 1" bulkheads do the trick.

luke33
02/01/2007, 02:06 PM
2-1" intakes = 1200gph. 1-1.5" = 1500gph

adw
02/01/2007, 02:20 PM
That doesn't make any sense my mak4 pumps 1200 gph through a 1" intake.

1badbrd
02/01/2007, 03:05 PM
pressure/friction would be a factor

gabe3d
02/01/2007, 04:19 PM
I did a lot of experimenting on this subject and the 600gph for 1'' is not a "set in stone" number you can go by. I drained my 100 gallon through a 1'' hole at the bottom and i can assure you that it did not take 10min to empty it. There is a lot more involved in that number, location of hte drain, amount of water above the hole, pressure, piping size , etc.. If anyone wants to argue then please attempt this yourself.

To further validate my calculations and testing i plumbed my AGA 210 two 1'' drains to feed a large container with my dart or hammerhead connected at the end to see if the drain can keep up with the pump. After all this laborious testing (because i didn't want to drill my AGA) i decided to plumb my hammerhead to both the 1'' and the dart having the 2 3/4'' as input. However you run the risk of making the pump cavitate if one of hte hole gets plugged, for the one that is directly plumbed to the hole that is.

http://img.photobucket.com/albums/v494/gabe3d/Aquarium/210/IMG_3326.jpg

luke33
02/01/2007, 07:54 PM
ADW, the overflow which is gravity fed will drain on average 600gph for 1" and 1500 for 1.5" this is just an average, i'm sure you could get less or more. You can pump more than that 600gph because its a pressurized pump.