MIL-PRF-83870C
TABLE II. Performance requirements
M83870-1
M83870-2
M83870-3
M83870-4
M83870-5
Operating fluid temperature range (°F)
-65 to 350
-65 to 350
-65 to 350
-65 to 350
-65 to 350
Absolute rating (micron)
20
20
20
20
20
Rated flow (gal/min)
6.0
6.0
10.0
10.0
10.0
Efficiency
Add quantity: F-9 beads (g)
0.30
0.30
0.30
0.30
0.30
Contaminant removal by
94
94
94
94
94
weight (percent)
Pressure Buildup and Collapse
Pressure drop (clean element)
10.5
10.5
10.5
10.5
10.5
(psi)
AC dust add increments (g)
0.30
0.30
0.30
0.30
0.30
AC dust minimum weight (g)
2.75
6.30
3.60
3.00
3.00
Element pressure drop (psi)
40
40
40
40
40
Min collapse pressure (psi)
200
200
200
200
200
Flow Fatigue
Hydraulic fluid temperature (°F)
350± 5
350± 5
350 ±5
350 ± 5
350 ± 5
Flow rate (gal/min)
6.0
6.0
10.0
10.0
10.0
Cycling rate (cpm)
300
300
300
300
300
(a) Number of fatigue cycles
1,125,000
1,125,000
1,125,000
1,125,000
1,125,000
20
Element pressure drop (psi)
20
20
20
20
(b) Number of fatigue cycles
112,000
112,000
112,000
112,000
112,000
Element pressure drop (psi)
50
50
50
50
50
(c) Number of fatigue cycles
12,000
12,000
12,000
12,000
12,000
Element pressure drop (psi)
100
100
100
100
100
(d) Number of fatigue cycles
500
500
500
500
500
Element pressure drop (psi)
200
200
200
200
200
Max Particle Passed (micron)
20
20
20
20
20
Add rate F-9 beads (g)
0.30
0.30
0.30
0.30
0.30
Note: AC dust is standardized fine air cleaner dust.
4
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