Limiting flow rate

gramma royale · 11/25/2008, 04:46 PM

Hi all,

I have a 2" drain pipe from an internal overflow box and I want to limit that flow to 150 GPH, any way to do that? The reason being is I don't want to blow away everything in my fuge, which currently does not have any dividers.

Thanks!

jasonrp104 · 11/25/2008, 04:51 PM

Put a break in the drain with a new line to the fuge and a valve to control the flow? Have the fuge and the intake/skimmer drain into the middle?

gramma royale · 11/25/2008, 04:56 PM

Thanks Jason.

I'm actually not going to use a skimmer in this tank. And the plumbing I was planning is very simple: Main tank -> fuge -> external pump -> main tank.

Would adding a valve to the main tank drain work? Or would that be a noise-racket waiting to happen?

Thanks again jason

AZDesertRat · 11/25/2008, 09:08 PM

You control the rate with the return pump. The overflow and standpipe will only flow what the return pumps, get a pump slightly larger than you think you will need at whatever head you have and install a valve on the discharge side to control flow.
Never try to restrict the overflow or you risk a flood.

gramma royale · 11/25/2008, 10:27 PM

Thank you A.J., that does make a lot more sense.

11/25/2008, 04:46 PM	#1
gramma royale Registered Member Join Date: Aug 2001 Posts: 661	Limiting flow rate Hi all, I have a 2" drain pipe from an internal overflow box and I want to limit that flow to 150 GPH, any way to do that? The reason being is I don't want to blow away everything in my fuge, which currently does not have any dividers. Thanks!

11/25/2008, 04:56 PM	#3
gramma royale Registered Member Join Date: Aug 2001 Posts: 661	Thanks Jason. I'm actually not going to use a skimmer in this tank. And the plumbing I was planning is very simple: Main tank -> fuge -> external pump -> main tank. Would adding a valve to the main tank drain work? Or would that be a noise-racket waiting to happen? Thanks again jason __________________ He is risen indeed.

11/25/2008, 10:27 PM	#5
gramma royale Registered Member Join Date: Aug 2001 Posts: 661	Thank you A.J., that does make a lot more sense. __________________ He is risen indeed.

11/25/2008, 04:51 PM	#2
jasonrp104 Registered Member Join Date: Nov 2008 Location: vt Posts: 1,113	Put a break in the drain with a new line to the fuge and a valve to control the flow? Have the fuge and the intake/skimmer drain into the middle?

11/25/2008, 09:08 PM	#4
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	You control the rate with the return pump. The overflow and standpipe will only flow what the return pumps, get a pump slightly larger than you think you will need at whatever head you have and install a valve on the discharge side to control flow. Never try to restrict the overflow or you risk a flood.