Top Coatings B Flashcards
Key factors when comparing spray systems
Atomization
Transfer efficiency
Application rate
In which spray system does the fluid tip protrude above the air cap?
Suction feed
In which spray system is the fluid tip flush with the air cap?
Pressure feed
Components of a conventional spray gun
Gun body, air inlet, cheater valve, fluid inlet, trigger, fluid needle, fluid tip, packing nut, lock ring, air cap, fluid control valve, pattern control valve
What valve is in line with the tip of the spray gun?
Fluid control valve
A spray pattern that is heavy in the middle could mean
too little air flow
Spray pattern divided in the middle
too much air
Spray pattern heavy at top or bottom
Restriction in fluid needle or air cap horn
Boomerang spray pattern
dirty or deformed air cap horn
restriction at fluid needle
You should always spray at a perpendicular angle
True
What percentage of overlap should you aim for
50%
Four types of spray systems
conventional
airless
HVLP
air-assisted airless
What does atomization mean
the breaking up of a finish into a fine spray
What atomizes in an airless system
forcing finish through a small hole with pressure
Spray system that had the highest application rate
Airless
