QED AP4+ - Page 9

As Pump Fills,
Float Rises
Lower
Float Stop
Check Valve
Unseated
Allowing
Liquid into
Pump
Pivoting Lever
Tipped Downward
By Descending
Float
Upper
Float Stop
Compressed Air
Flowing Into
Pump
As Pump Empties,
Float Descends
Lower
Float Stop
Check Valve Seated
Sealing Inlet
Pivoting Lever
Tipped Upward
By Rising Float
Air Exhausting
From Pump
Pump FillingPump Emptying
6
Figure 3 - How it Works