Compressed air filter applications by grade

China promulgated two national standards for air filters (GB/T14295-93) and high-efficiency air filters (GB/T13554-92) in 1992 and 1993 respectively, which classify compressed air filters into the following five levels:

wWe introduce you to all levels of compressed air filter uses:

1, coarse filter - mainly used for the first to pre-filtering of the air supply system, retaining suspended particles of more than 5μm and more than 10μm settling particles and various foreign matter, to prevent these impurities from entering the clean space, so the efficiency of coarse filter to 5μm prevail.

2, medium efficiency filter - because there is a pre-filter in front of the retention of large diameter particles, it can be used as the final filter of the general air conditioning system and high efficiency filter pre-filter, so it is mainly used to retain 1 ~ 10μm suspended particles, its efficiency that is to filter 1μm shall prevail.

3, high efficiency filter - can be used as the end filter of the general purification degree system, but also to improve the system purification effect, as the pre-filter of the high efficiency filter, so as to better protect the latter high efficiency filter, so mainly used to retain 1 ~ 5μm suspended particles, his efficiency also to filter 1μm shall prevail.

4、Sub-high efficiency filter - can be used as the end filter of clean room to achieve a certain level of air cleanliness, but also as the pre-filter of high efficiency filter to further improve and ensure the cleanliness of air supply, but also as the final filter of fresh air to improve the quality of fresh air. So the same as the high efficiency filter, it is mainly used to retain submicron particles below 1μm, its efficiency that is to filter 0.5μm shall prevail.

5, high efficiency filter - it is the most important final filter in the clean room, to achieve ≤ 0.5μm of each cleanliness level for the wood point, its efficiency is used to filter 0.3μm shall prevail. If further subdivided, if to achieve 0.1μm cleanliness level for the purpose, then the efficiency of 0.1μm shall prevail, customarily known as ultra-high efficiency filter.

Lingyu ~ 1.0 0.01 micron precision moisture removal compressed air filter