AutoPumps are air-powered positive displacement pumps that require
no surface timer-based controllers, bubblers or sensors in the well to
operate. The pump is activated by an internal float in response to the
natural well recharge. Because the AutoPumps fill by gravity and
discharge by air displacement, no emulsification is created during its
operation.
Fill Cycle
The fluid pushes the inlet check-valve open and fluid enters the pump.
As the fluid level rises, air is expelled through the exhaust air valve and the internal float rises to the top of its stroke.
In
this upper position, the float triggers a lever assembly, which closes
the air exhaust valve and opens the air inlet allowing air to enter and
pressurize the pump.
Discharge Cycle
With the air
inlet open, air pressure builds up within the pump body. This causes
the fluid inlet check-valve to close and forces the fluid to be
displaced up and out of the fluid outlet.
As the fluid level falls, the float moves downward to the bottom of its stroke.
In
this lower position, the float triggers the lever assembly to close the
air supply and open the air exhaust valve. And a new cycle begins.
