Page 4 - DFF-series

ISO 8573-1:2010 Class A: B: C
A - the purity class for solid particles
B - the purity class for water (liquid, vapor and aerosol)
C - the purity class for oil (liquid, vapor and aerosol)
If a purity class is not specified for any type of If the level of contamination corresponds to class X, then
contamination A, B or C, the corresponding letter is the highest concentration of contamination should
changed to a dash. In the example below, there is be indicated in brackets. In the example below, the
no classification for the water content (liquid, vapor concentration of water in the liquid phase is 15 g / m³:
and aerosol) in the compressed air: ISO 8573-1:2010 Class A: X (15): C
ISO 8573-1:2010 Class A: -: C

Example:

The company requires compressed air prepared according to ISO 8573-1:2010 Class 1: 2: 1. The selection of
equipment should be made according to the following criteria:

Class 1 Class 2 Class 1

purity class for solid particles: purity class for total water content purity class for the total oil content
(liquid, vapor and aerosol): (liquid, vapor and aerosol):
The maximum permissible number
of particles with a size of 0.1 - 0.5 Dew point temperature -40°C or No more than 0.01 mg of the total
micron is 20,000 particles, with a lower, no water in the liquid phase oil content (aerosol, liquid and
size of 0.5 - 1 micron is 400 par- allowable in a cubic metre of vapour) allowable in a cubic metre of
ticles, with a size of 1 - 5 micron compressed air. compressed air.
is 10 particles.

4 www.comprag.com FILTERS FOR COMPRESSED AIR LINES DFF-series