压缩后，空气中的颗粒和水分含量将会增加。 混合在一起形成广泛损害的磨损性混合物。

仪器和工具会发生故障，喷枪和气动部件容易引起失效，造成维修保养费用增加和最终产品的损坏。 
在正确的组合中使用时，阿特拉斯•科普柯 DD - PD - DDp 和 QD 过滤器系列在正常工作条件下可提供 9 到 7200 升/秒的高质量空气。
DD 系列：用于一般性保护的聚合颗粒过滤器，可消除小至 0.1 毫克/立方米 (0.1 ppm) 的液状水和油雾以及小至 1 微米的颗粒。
DDp 系列：用于除尘的颗粒过滤器，可消除小至 1 微米的颗粒。
PD 系列：高效聚合颗粒过滤器，可消除小至 0.01 毫克/立方米 (0.01 ppm) 的液体水分和油雾以及小至 0.01 微米的颗粒。
QD 系列：活性炭过滤器，用于消除最大残留油量为 0.003 毫克/立方米 (0.003 ppm) 的油蒸气和碳氢化合物气味，必须安装在 PD 过滤器后面。

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After compression, the particles in the air and moisture content will increase. Mix together to form mixture of extensive damage up to wear and tear.

The malfunction of the instrument and tools will be easy to cause failures, spray gun, and pneumatic components caused by increased maintenance costs and damage to the final product.

When used in the right combination, atlas, shorter DD - PD - DDp and QD series filter under normal working conditions can provide 9 to 7200 liters/s of high quality air.

DD series: used for general protection aggregation of particle filter, can eliminate small to stere of 0.1 milligram/(0.1 parts per million (PPM) of liquid water and oil mist as well as small as 1 micron particles.

DDp series: used for dust particle filter, can eliminate small to 1 micron particles.

PD series: high polymer particle filter, can eliminate small to stere of 0.01 milligram/(0.01 parts per million (PPM) of liquid water and oil mist and particles as small as 0.01 microns.

QD series: activated carbon filter, used to remove residual oil as the largest stere of 0.003 milligram/(0.003 parts per million (PPM) of oil steam and smell of hydrocarbons, the filter must be installed in PD.