Electric prayers are generally simpler, have fewer parts, and are much cheaper thangas-powered sprayers. Typicaly, the pump and motor are one unit, which is cheaper (compared to gas power) and requires no extra assembly, saving labor and assembly costs.
In a low-volume (LV) sprayer, spray material in a water or oil carrier
is injected into a high-speed air stream developed by a fan, blower or compressor.
In most LV sprayers, a small pump is used to inject a
concentrate pesticide solution into the air stream.
The speed of the air stream may be as high as 200 mph.
Advantages include delivering spray to hard-to-reach places,
such as trees, as well as application at high pressure and high
capacity or low pressure and low volume. A disadvantage is
that spray guns are not suited for treating large areas.
The major components of a sprayer are tank, pump, agitator,
flow control, and nozzles. Sprayer tank, wand, pump and gauge.
Use synthetic rubber or plastic hoses that have a burst strength
greater than peak operating pressures, resist oil and solvents
present in pesticides, and are weather resistant.