Looking for full siphone flow rates - HELP

[BZOFIQ]

I've goggled different resources but numbers are all over the place.

I'm in planning stages of my next build and wanted to use 2 bean animal overflows. Looking to see how much of a water flow at full siphone I can get from say

1"
1-1/4"
1-1/2"

... Schedule 80 PVC pipes.

In bean animal setup is it better to run larger bulkhead and pipe for full siphon and then dial it down with a valve or should I get pipe closer to desired flow rates as to avoid having voids and air buildup in the full siphone pipes?

Thank in advance for taking time to answer.

 

[ca1ore]

You have to take into account the drop also. A 1" siphon with a 3' drop to an in stand sump will move less than one with a 10' drop to a basement sump. I have always been of the view that you should retain the ability to go larger. In my case, my main siphon is a 1 1/2" bulkhead and 4' of 1 1/2" PVC to a 1 1/2" union. After that, I go to 1"; but should I wish to go to 1 1/2" in the future I can just replace one side of the union. Easy!

 

[BZOFIQ]

We're talking about 4' of drop,

 

[drtrash]

Just did 1", moves a solid 700 gph, dead silent, i know that most people think thats not alot but any more a sump is a jacuzzi and 10x is crazy talk. Gate valve closed 25%, originally thought go bigger to be safe but silent is all i was after with moderate flow in tank

 

[BZOFIQ]

Thanks drtrash, what size thank?

I need to handle 2-3 kGPH because I'm going with 2 pump setup for extra flow and redundancy plus my sump is going to be 6ft long so I need extra flow to keep things suspended.