11
How it Works
First, when you start the GAS-POWERED ENGINE, or ELECTRIC MOTOR, of
your sprayers, the motor drives a crankshaft inside the water pump that starts
the pistons or plungers.
Fresh water, coming in from your fluid supply tank, through the intake hose,
picking up fluid near the bottom of the sprayer tank to the inlet side of the
pump manifold.
The CAT pump produces flow and sends it to the unloader. Pressure is
created by restricting the flow at the nozzle. At a given flow, the smaller the
restriction nozzle the higher the pressure; the larger the restriction nozzle the
lower the pressure.
The unloader acts like a traffic cop, sending the preset amount of flow
through the hose and towards the spray gun and nozzle, and sending the by-
pass fluid back to the pump manifold or through the recirculation hose and
back into the tank (depending on the ball valve position). See page 14 - 16
to learn about the unloader.
Water is pushed through the high pressure hose, through the spray gun that's
controlled by a trigger. The trigger on the spray gun is actually a valve that
controls the flow through the wand. Squeezing the trigger opens the valve,
releasing the trigger closes the valve. The spray gun has a trigger lock
feature that will lock the trigger closed for safety to prevent accidental
activation of the spray gun.
The pump produces flow. The pressure is created by restricting the flow
through the use of an appropriate sized nozzle or tip.
The sizes and flow rate calculations of the nozzles and tips provided with the
Fox sprayer line have been predetermined at the factory. Altering the size and
flow rates of the nozzles and tips can hinder sprayer performance. Wear in a
nozzle or tip can cause pressure drop.
Note: Spray angle does not affect nozzle flow rate.
For twenty-five years, Siebring Manufacturing has been listening to and
incorporating customer suggestions and criticisms to develop a dependable
and user friendly product. The paragraphs below briefly describe the
Siebring “FOX” line of sprayers and how they operate.
