How much flow in siphon and free channel of different sizes???

[AlfonsoD]

Hi,

I would like to find a source or recive from you a estimation on how much flow pass throug different plumbing sizes at open channel and siphon.

I know that there was some charts somewhere but now that I need them I can't find any.

Thanks!

[gary faulkner]

If you are talking about gravity drains.

1" = 600 gph
1.25"= 1200 gph
1.5" = 1800 gph
2" = 3600 gph

HTH

[AlfonsoD]

Thank you, I understad that those are "open channel", ie with normal drain or durso with air intake at the top, but what will happen if you set same size but in siphon mode?

[BeanAnimal]

The flow through a siphon depends on the head pressure pushing the siphon and the friction in the tubing. I have well over 1500 GPH being sucked silently through a 1" bulkhead with a 1.25" standpipe.

See my website at www.beananimal.com (there is a link there to the RC thread also). that explain my overflow design.

[AlfonsoD]

<a href=showthread.php?s=&postid=12653246#post12653246 target=_blank>Originally posted</a> by BeanAnimal
The flow through a siphon depends on the head pressure pushing the siphon and the friction in the tubing. I have well over 1500 GPH being sucked silently through a 1" bulkhead with a 1.25" standpipe.

See my website at www.beananimal.com (there is a link there to the RC thread also). that explain my overflow design.

BeanAnimal thank you very much…..in fact I read your article prior to this thread and I really enjoyed it…..also I learned a lot.

The whole 2.000 gph are going through the siphon or some part is flowing through the open channel?


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