Mainline Tubing Sizing guideline

[pls009]

Is there a good resource online to help with mainline tubing sizing? I apologize if it is here already but didn't locate it when searching. I am going to set up a gravity system that will hopefully be converted to vac within a short time period - would like to do it right the first time if possible. I am estimating a hillside with about 1,000 feet of mainline and possibly a couple shorter branches of mainline coming off of this and a total of around 300-350 taps feeding downhill into the mainline. Thanks so much for the advice and guidance. Paul

[unc23win]

http://leaderevaporator.com/p-37-leader-light-blue-30p-plastic-mainline-tubing.aspx Leaders numbers are a good estimate for vacuum many people will run dual lines one wet and one dry. There may be some information online at PMRC site I can't remember off hand.

[maple flats]

Another good one is the Maple Tubing Notebook, by Steve Childs (Cornell Maple Specialist), available thru Cornell.