The Sullivan Air Lift Pumping System

Standard T, erms Used in Air Lift Work The sketch on this page illustrates the terms regularly used in referring to air lift pumping, and these terms and their application should be thoroughly understood as a preliminary to study of the subject. They are explained more fully below. i. Static Head: Normal water level when not pumping, measured from surface or top of well casing. 2. Drop: Point to which the water level drops below the static head while being pumped. FT I IO Ld 3. Pumping Head: Level of water when pumping as compared to ground surface or top of well casing. Static Head4-I)rop = Pumping Head. 4. Elevation: Point above the ground surface or top of well casing to which water is raised. -E F U_ D EAD. SURFACE. i C E IC TO G P I“ OO/o d- ID ---- à o cr I I I - I id . 0 ' CE BMERGE E Si SUBMERGE 0 0 NG STAR ERGENCE ans- i • t1 i _JL 5. Total Lift: Distance water is elevated, from level when pumping, to point of discharge, at an elevation, and includes: Elevation+Static Head+Drop = T otal Lift. 6. Lift: Distance the water is elevated from level when pumping to point of discharge at surface, and includes: Static head + Drop = Lift (orpumpinghead). 7. Submergence: Dis- tance below the pump- ing head at which the air picks up the water. 100 per cent: vertical distance air travels with water from point in- troduced to point dis- charged, and includes: Total Lift or Lift+ Submergence = 100 per cent. Starting Submerg- ence: Distance below the static head at which the air picks up the water and includes: 8. The the the in-