How much flow can a 2" pipe support?

[Michael Shaffer]

I buried a 2" pipe between my veggie pond and main pond. I think the
Pondmaster 3600gph pump might come down in price now that the newer
model is out, so I was thinking of getting a second one. Do you think my
2" pipe would support 7200gph?

Thanks

Mike

[Andrew Burgess]

Michael Shaffer > writes:

>I buried a 2" pipe between my veggie pond and main pond. I think the
>Pondmaster 3600gph pump might come down in price now that the newer
>model is out, so I was thinking of getting a second one. Do you think my
>2" pipe would support 7200gph?

Depends how long, how many fittings, static head and what flow is acceptable...
http://www.mdminc.com/friction_loss_chart.htm

You say one pipe. How does the water go the other way -- stream?

It depends on length and Pump pressure, and head pressures.
120 GPM would not be uncommon with a good pump.
although I say 100 with a Home Depot style pump.


7200 GPH \ 60 M =120 GPM
3600 GPM \ 60 M = 60 GPM

Cost and desired water flow will answer your question.