Going to use shur flow pump next year

[markr]

I have been on this sight for awhile now and my partner and i have decided to use the shur flow pump method next year to cut down on our sap picking time. My question is how much drop do my lines have to have to get the same natural vac that is created on a bucket

[mol1jb]

I have been on this sight for awhile now and my partner and i have decided to use the shur flow pump method next year to cut down on our sap picking time. My question is how much drop do my lines have to have to get the same natural vac that is created on a bucket

Dont quite understand what you are asking. In general with even very flat terrain a shurflo pump on 3/16 lines will work very well. For just natural vac on 3/16 any drop will generate vac but for max natural vac you need 30ft drop after the last tap.