Silent and Failsafe Overflow System

BeanAnimal said:
Increasing pipe size will increase the maximum pumping height by reducing the friction at the outlet side of the pump. Reduced friction = reduced static head :)

Any time you can increase pipe diameter (within reason) it will reduce the friction that the pump has to overcome to move water.
Click to expand...

Ok, I knew I had to be wrong. I swore to myself I wouldn't question you or Jim:hammer:

Is there a way to figure out the maximum pipe size to use before experiencing a diminished return? Would increasing the pipe size then in turn maximize the flow above what the pump is rated for at a particular height?
 
uncleof6 said:
Danner, the maker of the mag drive pumps says 1.5" tubing is recommended for the return. It is in the instructions. I pretty much flipped the first time I heard that as well, but I read the destructions, and sure enough that is what it said.

Jim
Click to expand...

Wow, just checked their website and it says that 1.5" ID tubing is the MINIMUM.:eek2:

Has anyone ever seen this on an actual setup?
 
Barfly said:
Ok, I knew I had to be wrong. I swore to myself I wouldn't question you or Jim:hammer:

Is there a way to figure out the maximum pipe size to use before experiencing a diminished return? Would increasing the pipe size then in turn maximize the flow above what the pump is rated for at a particular height?
Click to expand...

Yes, there are plenty of equations to use, but I would not bother in most cases. Common sense prevails. You are not going to get much benefit from going to 3" from 1.5" @1000 gph over a 10 foot piping system. If it was 100' or 1000' of pipe then 3" would be reasonable.

No, when you look at a pump curve, you (in most cases) are looking at "total feet of head loss" unless it states "vertical head loss". In the case of a vertical head loss calculation, they are more than likely using the best-fit discharge pipe size.
 
PVC Sheet?

PVC Sheet?

Tossin this out for someone, thinking of using 1/4" pvc sheet for my internal overflow. Is this stuff saltwater safe for our Tanks?

Thanks, Bigffish
 
Hey Bean, hope all is well with you! Do you recall what size hole you drilled for your JG Fitting? I am thinking 9/16" for a 5/8" Tap?

Thanks, bigffish
 
I must refer you back to the first five pages of this thread....;)Sorry for the humor couldn't resist! It is 1/4" x 3/8" nptf. Go to bed!
 
Not that I am aware of. C2C overflow/boxes are still pretty much DIY. You can get relatively short ones from glass-holes.com, but not long enough for this drain system. Probably about the time a better idea comes along, the manufacturers will get the idea they ought to be doing long boxes. (They are still stuck on corner overflows)

Jim
 
Well the best choice of material, would depend on whether you are building internal or external. If external would not trust acrylic, and would use the stronger RTV108 silicone. Internal, you would be fine with acrylic or glass, and with the DC 999A or 732.

Jim
 
Hi Bean

Can I ask the reason for the two vertical pipes and caps on the two non airline chimney's?
I'm assuming that this provides a volume of air to compress when the siphon starts but want to make sure. If I'm right then a longer height is better or at least not detrimental?
I have a room divider tank with a spacer cabinet at its end to hide plumbing in. This is higher than the tank surface so I can add a few inches of head height to teh pipes.

Your thoughts please?

Cheers
Malcom
 
You must log in or register to reply here.

Similar threads

AquaticReefTV
DIY Cable management time lapse
Replies
1
Views
531
S|\/|S
S
DjPhato
Overflow and flow-pump location for peninsula
Replies
1
Views
323
Vinny Kreyling
Vinny Kreyling
H
Dry Fit Plumbing Test for 200g, Critique before I glue?
Replies
4
Views
479
Hezamam
H
isseym328
Adding water volume to current set up help
Replies
18
Views
967
JohnL
JohnL
T
220G Tank Setup - Flow/General Advice Needed
2
Replies
23
Views
1K
The Reef Addict
T
Back
Top