MIL-DTL-25579G
TABLE III. Performance requirements and hose assembly sample lengths. 1/ 2/
Minimum
Minimum
Minimum high
Length of
Maximum
Length of
inside
Proof
samples for samples for
temperature
room
operating
bend
pressure
Size
impulse
burst
temperature
all other
pressure per
radius
psi (MPa)
test
burst pressure pressure psi
tests
square inch
4/ 5/
inches
in.(mm) 3/ in.(mm) 3/
(MPa)
psi (MPa)
psi (MPa)
(mm)
14.0
18.0
1500
3000
12000
7000
2.00
-3/-4
(355.6)
(457.2)
(10.34)
(20.68)
(82.74)
(48.26)
(50.8)
14.0
18.0
1500
3000
12000
7000
2.00
-4
(355.6)
(457.2)
(10.34)
(20.68)
(82.74)
(48.26)
(50.8)
16.0
18.0
1500
3000
10000
6500
2.00
-5
(406.4)
(457.2)
(10.34)
(20.68)
(68.95)
(44.82)
(50.8)
18.0
18.0
1500
3000
9000
6500
4.00
-6
(457.2)
(457.2)
(10.34)
(20.68)
(62.05)
(44.82)
(101.6)
21.0
18.0
1500
3000
8000
6000
4.63
-8
(533.4)
(457.2)
(10.34)
(20.68)
(55.16)
(41.37)
(117.6)
23.5
18.0
1500
3000
7000
5500
5.50
-10
(596.9)
(457.2)
(10.34)
(20.68)
(48.26)
(37.92)
(139.7)
27.5
18.0
1000
2000
5000
3500
6.50
-12
(698.5)
(457.2)
(6.89)
(13.80)
(34.47)
(24.13)
(165.1)
18.0
18.0 6/
1250
2500
5000
3500
7.38
-16Z
(457.2)
(457.2)
(8.62)
(17.24)
(34.47)
(24.13)
(187.4)
18.0
18.0 6/
1000
2000
4000
3000
11.00
-20Z
(457.2)
(457.2)
(6.89)
(13.80)
(27.58)
(20.68)
(279.4)
18.0
18.0 6/
1000
2000
4000
3000
14.00
-24Z
(457.2)
(457.2)
(6.89)
(13.80)
(27.58)
(20.68)
(355.6)
1/
Dimensions are in inches.
2/
Metric equivalents are given for information only.
3/
The number of samples required for qualification testing as specified in 4.2.1.
4/
Assemblies with aluminum flange fittings shall be proof-pressure tested to the values listed under the
proof pressure column as a minimum.
5/
Proof-pressure tolerances are +5%, -0%.
6/
Samples for the low temperature flexibility and the vacuum tests shall be 30 inches long for these sizes.
3.6.2 Proof pressure. When subjected to the applicable proof pressure specified in table III and tested in
accordance with 4.5.2, the hose assembly shall not leak through the wall of the hose or around the end fittings.
The fittings shall not exhibit any visual evidence of damage or permanent deformation.
3.6.3 Leakage. There shall be no leakage through the wall of the hose or around the fittings when the hose
assembly is subjected to testing in accordance with 4.5.3.
3.6.4 Room temperature burst pressure. When subjected to testing in accordance with 4.5.4, the hose
assembly shall not leak or burst below the applicable room temperature burst pressure specified in table III.
There shall be no leakage around the end fittings, and the end fittings shall not loosen or separate from the
hose.
9
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