This is most evident when a float is used--either as a switch or level measurer that sends a signal to a control valve, or as a one piece float control
(like the ball-cock in a water tank, which both measures the level and controls the flow in a single device).
When the tank is full, a float control
switch turns off the pump and the delivery line drains back to the source.
This factory-installed ACS option includes the hand controls, foot pedals, dash panel switch and the lift-arm float control
button, which is mounted on the left control handle facing the operator.
The second is controlled by an automatic float control
system, operating as the 'lag' pump to provide an additional 1,800 gpm.
The flow of surface water into the raw water basins is controlled by a hydraulic pilot float control
Dozer float control
is also fitted as standard, allowing for easier ground leveling.