Why treat compressed air
A charged surface attracts dust from the surrounding environment even from metres away. Deionization instantly breaks this magnet-like attraction.
Dust already settled on the part isn't just resting there: it is “glued” on by static electricity. Blowing with ordinary air isn't enough; deionizing air is needed to break the electrical bond and let the air flow carry the dust away.
If the substrate is unevenly charged, it will repel or attract the paint irregularly, creating thickness defects or pigment build-up.
The Evans system advantage
From the light fabrication workshop to the industrial painting line for large structures, Evans sizes the air treatment to the flow required by blasting machines and guns, and to the anticorrosion cycle applied.
Site survey, sizing, installation and testing included.
Request information →Small components and structures. Compact installation on the existing compressor.
Complete anticorrosion cycles — blasting, primer, finish. Modular system across several stations.
Beams, tanks, industrial machinery. Centralized system with remote air quality monitoring.
The Evans system can be interconnected with the painting line: real-time monitoring of pressure, temperature and dew point, automatic alerts, and data for the Industry 5.0 tax credit.
FAQ
Compressed air touches the surface at every stage of the cycle: blow-off, blasting and painting. If it carries electrostatic charges, the part becomes charged and attracts dust from the environment, which gets trapped under the primer. If it contains moisture or oil, it triggers flash rust and compromises adhesion. Evans air arrives filtered, dried and deionized, eliminating all three variables.
Flash rust forms when blasted steel is exposed to moisture before the first coat of primer. By feeding the blasting machine and guns with dry air, Evans removes the most common source of moisture in this critical stage, extending the useful time between cleaning and protection.
Yes. Many anticorrosion specifications for steel structures require documented film thicknesses and application conditions. Evans air guarantees consistent spraying conditions — pressure, humidity, no oil and no static charges — that support compliance with these specifications, regardless of who inspects the painting cycle.
Yes. Evans sizes the treatment to the total flow required by blasting and painting, installing downstream of the existing compressor without changing the main network.
Because the dust on the part isn't just resting there: it is held by static electricity. An ordinary air jet doesn't break this bond, so some of the dust stays on the surface and ends up under the film. Deionized air neutralizes the charge: the dust comes away and the air flow carries it off, leaving the part clean for the primer.
It neutralizes the electrostatic charges on the surface of the part. A charged surface attracts dust from the environment even from a distance and holds it; if the charge is uneven, it repels or attracts the paint irregularly, causing differences in thickness and pigment build-up. With deionized air the surface returns to neutral, dust is removed easily and the paint is deposited evenly.
