Functional Principle Of Electric Hand Spray Guns - WAGNER W 140 P Training Manual

Functional Principle of Electric Hand
Spray Guns
The heart of the airless unit is the
piston which causes atomisation
by high pressure.
The oscillator pushes the piston
forwards. As soon as the piston
spring moves the piston backwards,
a vacuum is set up in the pump
cylinder and this sucks in the
spraying material. In the next
forward movement of the piston, the
suction aperture is closed and the
spray material is pressed outwards
under high pressure through the
valve system – with no air.
The spray flow rate and the
spraying pressure can be
smoothly adjusted with the
regulating screw
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