Atmospheric air contains a mass of pollutants including dust, water aerosols, hydrocarbon and other gaseous contaminants by the addition of liquid oil, oil aerosols, oil vapor, (if an oil-lubricated compressor is used) liquid water, water aerosols, water vapor, pipe rust and scale as well as any extra micro-organisms that may be living, growing and multiplying in the compressed air lines. All of these unwanted, contaminants will arrive at the point-of-use of a compressed air system but can be removed by various filters depending on the level of clean compressed air required.

The 3A Accepted Practices for Supplying Air Under Pressure in Contact With Milk, Milk Products and Product Contact Surfaces, Number 604-05 recognizes the need for clean compressed air in the food industry. It pertains to the sanitary aspects of the equipment and filters used in the supplying of air under pressure for contact with food, food products, other comestibles, product contact surfaces and solution contact surfaces or primary and secondary contamination refer to Section D6 of the 3A Practice and 'final filters', for their location and use.

Model					Capacity Nm3/min	Element quantity	Dimension(mm)		Air Connection	Weight(tg)
E-	D-	C-	B-	A-			A(W)	B（H）
0.5	0.5	0.5	0.5	0.5	0.6	1	105	250	ZG1″	2
001	001	001	001	001	1.2	1	105	250	ZG1″	2
002	002	002	002	002	2.4	1	105	310	ZG1 1/2″	3
004	004	004	004	004	3.8	1	137	400	ZG1 1/2″	4
005	005	005	005	005	5	1	137	400	ZG1 1/2″	5
007	007	007	007	007	6.8	1	137	425	ZG1 1/2″	5
008	008	008	008	008	8.5	1	137	620	ZG1 1/2″	10
010	010	010	010	010	10.7	1	137	620	ZG1 1/2″	10
013	013	013	013	013	13.5	1	137	620	ZG2″	10
018	018	018	018	018	18	1	137	620	DN80	10
024	024	024	024	024	24	2	153	940	DN80	14
036	036	036	036	036	36	2	456	1033	DN80	65
045	045	045	045	045	45	2	456	1128	DN100	68
054	054	054	054	054	54	3	513	1215	DN125	96
066	066	066	066	066	66	3	513	1215	DN125	96

To note: Filter efficient :
E Series: solid particles: 3μ,oil content : 5 ppm
D Series: solid particles: 1μ,oil content : 1 ppm
C Series: solid particles: 0.01μ,oil content : 0.01 ppm
B Series: solid particles: 0.01μ,oil content : 0.001 ppm
A Series: solid particles: 0.01μ,oil content : 0.003ppm