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Air Flow Rates<br />
Disposable Type Filter Elements<br />
Air flow rates in Nm³/hr at stated line pressure with a 0.1 Bar pressure drop<br />
Flow rates will depend on which filter element grade is installed in the filter housing. First check the size of the filter element installed using the<br />
housing data sheets and then use the charts below to read the flow rate at the desired pressure against the element grade. Replace the □ in the part<br />
number shown with the required grade, for example 12.57.7K would be a grade 7 on the charts below.<br />
The maximum flow rate also depends on the flow path though the housing - for housings with a smaller port size please consult us for the exact figure.<br />
12.32.□<br />
Air Pressure (Bar), 1/4" Port Size<br />
Grade 1 2 4<br />
7 10<br />
16 34 100 200 350 700<br />
4<br />
5<br />
6<br />
7<br />
8<br />
1.6<br />
3.2<br />
5.5<br />
6.3<br />
7.1<br />
2.6<br />
5.3<br />
9.2<br />
10.5<br />
11.8<br />
3.7<br />
7.4<br />
12.9<br />
14.7<br />
16.5<br />
5.3<br />
10.5<br />
18.4<br />
21.0<br />
23.6<br />
6.3<br />
12.6<br />
22.1<br />
25.2<br />
28.4<br />
7.9<br />
15.8<br />
27.6<br />
31.5<br />
35.4<br />
11.8<br />
23.6<br />
41.3<br />
47.3<br />
53.2<br />
18.4<br />
36.8<br />
64.3<br />
73.5<br />
82.7<br />
28.9<br />
57.8<br />
101.1<br />
115.5<br />
129.9<br />
36.8<br />
73.5<br />
128.6<br />
147.0<br />
165.4<br />
52.5<br />
105.0<br />
183.8<br />
210.0<br />
236.3<br />
12.57.□<br />
Air Pressure (Bar), 1/4" Port Size<br />
Grade 1 2 4<br />
7 10<br />
16 34 100 200 350 700<br />
4<br />
5<br />
6<br />
7<br />
8<br />
2.6<br />
5.1<br />
8.9<br />
10.2<br />
11.5<br />
4.3<br />
8.5<br />
14.9<br />
17.0<br />
19.1<br />
6.0<br />
11.9<br />
20.8<br />
23.8<br />
26.8<br />
8.5<br />
17.0<br />
29.8<br />
34.0<br />
38.3<br />
10.2<br />
20.4<br />
35.7<br />
40.8<br />
45.9<br />
12.8<br />
25.5<br />
44.6<br />
51.0<br />
57.4<br />
19.1<br />
38.3<br />
66.9<br />
76.5<br />
86.1<br />
29.8<br />
59.5<br />
104.1<br />
119.0<br />
133.9<br />
46.8<br />
93.5<br />
163.6<br />
187.0<br />
210.4<br />
59.5<br />
119.0<br />
208.3<br />
238.0<br />
267.8<br />
85.0<br />
170.0<br />
297.5<br />
340.0<br />
382.5<br />
25.64.□<br />
Air Pressure (Bar), 1/2" Port Size<br />
Grade 1 2 4<br />
7 10<br />
16 34 100 200 400 700<br />
4<br />
5<br />
6<br />
7<br />
8<br />
5.6<br />
11.1<br />
19.4<br />
22.2<br />
25.0<br />
9.3<br />
18.5<br />
32.4<br />
37.0<br />
41.6<br />
13.0<br />
25.9<br />
45.3<br />
51.8<br />
58.3<br />
18.5<br />
37.0<br />
64.8<br />
74.0<br />
83.3<br />
22.2<br />
44.4<br />
77.7<br />
88.8<br />
99.9<br />
27.8<br />
55.5<br />
97.1<br />
111.0<br />
124.9<br />
41.6<br />
83.3<br />
145.7<br />
166.5<br />
187.3<br />
64.8<br />
129.5<br />
226.6<br />
259.0<br />
291.4<br />
101.8<br />
203.5<br />
356.1<br />
407.0<br />
457.9<br />
138.8<br />
277.5<br />
485.6<br />
555.0<br />
624.4<br />
185.0<br />
370.0<br />
647.5<br />
740.0<br />
832.5<br />
25.178.□<br />
Air Pressure (Bar), 3/4" Port Size<br />
Grade 1 2 4<br />
7 10<br />
16 34 100 200 400 700<br />
4<br />
5<br />
6<br />
7<br />
8<br />
15.8<br />
31.5<br />
55.1<br />
63.0<br />
70.9<br />
26.3<br />
52.5<br />
91.9<br />
105.0<br />
118.1<br />
36.8<br />
73.5<br />
128.6<br />
147.0<br />
165.4<br />
52.5<br />
105.0<br />
183.8<br />
210.0<br />
236.3<br />
63.0<br />
126.0<br />
220.5<br />
252.0<br />
283.5<br />
78.8<br />
157.5<br />
275.6<br />
315.0<br />
354.4<br />
118.1<br />
236.3<br />
413.4<br />
472.5<br />
531.6<br />
183.8<br />
367.5<br />
643.1<br />
735.0<br />
826.9<br />
288.8<br />
577.5<br />
1010.6<br />
1155.0<br />
1299.4<br />
393.8<br />
787.5<br />
1378.1<br />
1575.0<br />
1771.9<br />
525.0<br />
1050.0<br />
1837.5<br />
2100.0<br />
2362.5<br />
38.152.□<br />
Air Pressure (Bar), 1" Port Size<br />
Grade 1 2 4<br />
7 10<br />
16 34 100 200 400<br />
4<br />
5<br />
6<br />
7<br />
8<br />
20.3<br />
40.5<br />
70.9<br />
81.0<br />
91.1<br />
33.8<br />
67.5<br />
118.1<br />
135.0<br />
151.9<br />
47.3<br />
94.5<br />
165.4<br />
189.0<br />
212.6<br />
67.5<br />
135.0<br />
236.3<br />
270.0<br />
303.8<br />
81.0<br />
162.0<br />
283.5<br />
324.0<br />
364.5<br />
101.3<br />
202.5<br />
354.4<br />
405.0<br />
455.6<br />
151.9<br />
303.8<br />
531.6<br />
607.5<br />
683.4<br />
236.3<br />
472.5<br />
826.9<br />
945.0<br />
1063.1<br />
371.3<br />
742.5<br />
1299.4<br />
1485.0<br />
1670.6<br />
506.3<br />
1012.5<br />
1771.9<br />
2025.0<br />
2278.1<br />
51.230.□<br />
Air Pressure (Bar), 2" Port Size<br />
Grade 1 2 4<br />
7 10<br />
16 34 100 200 400<br />
4<br />
5<br />
6<br />
7<br />
8<br />
41.9<br />
83.7<br />
146.5<br />
167.4<br />
188.3<br />
69.8<br />
139.5<br />
244.1<br />
279.0<br />
313.9<br />
97.7<br />
195.3<br />
341.8<br />
390.6<br />
439.4<br />
139.5<br />
279.0<br />
488.3<br />
558.0<br />
627.8<br />
167.4<br />
334.8<br />
585.9<br />
669.6<br />
753.3<br />
209.3<br />
418.5<br />
732.4<br />
837.0<br />
941.6<br />
313.9<br />
627.8<br />
1098.6<br />
1255.5<br />
1412.4<br />
488.3<br />
976.5<br />
1708.9<br />
1953.0<br />
2197.1<br />
767.3<br />
1534.5<br />
2685.4<br />
3069.0<br />
3452.6<br />
1046.3<br />
2092.5<br />
3661.9<br />
4185.0<br />
4708.1<br />
51.476.□<br />
Air Pressure (Bar), 2" Port Size<br />
Grade 1 2 4<br />
7 10<br />
16 34 100 200 400<br />
4<br />
5<br />
6<br />
7<br />
8<br />
86.9<br />
173.7<br />
304.0<br />
347.4<br />
390.8<br />
144.8<br />
289.5<br />
506.6<br />
579.0<br />
651.4<br />
202.7<br />
405.3<br />
709.3<br />
810.6<br />
911.9<br />
289.5<br />
579.0<br />
1013.3<br />
1158.0<br />
1302.8<br />
347.4<br />
694.8<br />
1215.9<br />
1389.6<br />
1563.3<br />
434.3<br />
868.5<br />
1519.9<br />
1737.0<br />
1954.1<br />
651.4<br />
1302.8<br />
2279.8<br />
2605.5<br />
2931.2<br />
1013.3<br />
2026.5<br />
3546.4<br />
4053.0<br />
4559.6<br />
1592.3<br />
3184.5<br />
5572.9<br />
6369.0<br />
7165.1<br />
2171.3<br />
4342.5<br />
7599.4<br />
8685.0<br />
9770.6<br />
Notes (1) The above flow rates are for air at 20ºC. Flow rates for other gases can be derived from relative viscosity data.<br />
(2) Flow rates are generally proportional to pressure drop. If an initial drop of 0.2 bar can be tolerated flow rates can be doubled.<br />
CF/2.0/031
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