3" or 4" bulkhead ratings?

[BCT182]

Kinda forgot....

How much flow can a 3" or a 4" bulkhead handle? Anyone know?
Thanks
BT

 

[matts125]

is this gravity fed (drain) or what?
it would have to be atleast 3,500-4,000 GPH

Matt

 

[BCT182]

sideways flow. connecting sumps

 

[mfinn]

The drain calculator on RC:

Using the following input parameters
Gallons per Hour = 5500

Drain and Overflow sizes are calculated as
Recommended minimum drain pipe diameter = 3.06 inches
Recommended minimum linear overflow size = 83 inches

 

[BCT182]

is this right? this is from RC

Calculators->Drain Size Calculator

Using the following input parameters
Gallons per Hour = 8400

Drain and Overflow sizes are calculated as
Recommended minimum drain pipe diameter = 3.79 inches
Recommended minimum linear overflow size = 127 inches

 

[BCT182]

whats linear overflow size? the minimum size for the overflow?

 

[mfinn]

Oops, don't think it would apply that way.

 

[BCT182]

how can we figure this out?

 

[mfinn]

whats linear overflow size? the minimum size for the overflow?

The total lenght of overflow box.

 

[BCT182]

im linking three sumps together and the water will flow through them at 8400gph. I need to plumb them together with bulkheads.

 

[WA coral]

an easy way to test would be to plumb sumps and loop the pump back into the first sump tank.. I know I use a 1 1/2 bulkhead for my over flow with approx 2500 gph flow down it and it is not maxed out my over flow box is 24x4x6 inches I would assume 3 inches for a non preasure flow through would be pushing it the last tank my run down and leave the pump dry.... that being said in you situation I would go big big big as you can I think you already get that concept but anyway an under calculation could be a disaster a big one in your case and I think 4 inches would be plenty

 

[Scooterman]

What would anyone need to flow that high rate through sumps etc in the first place?

 

[salmonslayer]

What would anyone need to flow that high rate through sumps etc in the first place?

I second that

 

[BCT182]

its a 1300 gallon system

 

[Scooterman]

its a 1300 gallon system

I've seen many larger & no where near that much flow through sumps, you push flow on separate systems typically, just isn't necessary through the sumps but hey that is cool because there are no rules & you may have other needs going on unexplained.