MIL-DTL-6000D
TABLE II. Hose pressure requirements.
Operating
Proof pressure
Burst pressure
Hose size, inches
pressure
minimum
minimum
(based on ID)
psi (MPa)
psi (MPa)
psi (MPa)
1/4 to 1, inclusive
250 (1.7
500 (3.4)
1,000 (6.9)
1-1/4 to 1-1/2, inclusive
200 (1.4)
400 (2.8)
800 (5.5)
1-3/4 to 2, inclusive
150 (1.0)
300 (2.1)
600 (4.1)
2-1/2 to 3, inclusive
100 (0.69)
200 (1.4)
400 (2.8)
3-1/2
87.5 (0.60)
175 (1.2)
350 (2.4)
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75 (0.52)
150 (1.0)
300 (2.1)
3.5.2.3 Length change. When tested as specified in 4.8.2.3, the length of the hose shall not change
by more than 10 percent.
3.5.3 Installation. When tested as specified in 4.8.3, the force necessary to install a fitting end in
accordance with SAE-AS5132 into a 1 inch size hose shall not be greater than 50 pounds (22.7 kg).
3.5.4 Circulation.
3.5.4.1 High temperature - 200 hours. When tested as specified in 4.8.4.1, the hose and fitting shall
not leak, crack, break, fitting blow out or detach from the hose.
3.5.4.2 High temperature - 50 hours. When tested as specified in 4.8.4.2, the hose and fitting shall
not leak, crack, break, fitting blow out or detach from the hose.
3.5.5 Low-temperature flexibility. When tested as specified in 4.8.5, the hose shall not break or show
cracks in the tube or coating.
3.5.6 Bend radii. When tested as specified in 4.8.6, the minimum outside diameter of the hose shall
not be less than 75 percent of the original outside diameter of the hose.
3.5.7 Adhesion. When tested as specified in 4.8.7, the minimum tension required to cause
separation between the tube and adjacent parts at the specified rate shall not be less than 15 pounds per
inch of width (6.8 Kg per 2.54 mm of width).
3.5.7.1 Iso-octane. When tested as specified in 4.8.7.1, the minimum tension required to cause
separation between the tube and adjacent parts at the specified rate shall not be less than 6 pounds per
inch width.
3.5.8 Volume change.
3.5.8.1 Ethylene glycol immersion. When tested as specified in 4.8.8.1, the decrease in tube volume
shall not be greater than 10 percent.
3.5.8.2 Oil immersion. When tested as specified in 4.8.8.2, the tube shall show no decrease in
volume.
3.5.8.3 Fuel immersion. When tested as specified in 4.8.8.3, the increase in tube volume shall not
be greater than 85 percent.
3.5.9 Tensile strength. When tested as specified in 4.8.9, the original tensile strength of the tube
shall not be less than 1,000 psi (6.9 MPa).
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