MIL-DTL-83797C
4.4.1 Hose assembly. When a hose assembly is required for a qualification inspection each hose
assembly shall consist of a hose as specified herein assembled with fittings from two different
manufacturers qualified to MIL-DTL-83798. Each hose assembly test sample shall consist of a hose as
specified herein, coupled with fittings in accordance with MIL-DTL-83798. Unless otherwise specified,
fittings for the test samples may be straight, 45°, 90°, flared, flareless, or flanges.
4.4.2 Qualification inspection routine. Samples shall be subjected to qualification inspection
specified in table III.
TABLE III. Qualification inspection.
Test
Requirement
Inspection
method
paragraph
paragraph
Examination of hose
Cleanliness
Dimensions
Reduction in diameter
Field attachability
Inner tube bulge, straight
coupling 1/
Proof pressure
Elongation or contraction
Bending and vacuum
Fuel immersion
Oil immersion
Cold temperature,
deflection test
Oil circulation test
Leakage 1/
Corrosion
Burst pressure 1/
1/ These are destructive tests.
4.4.2.1 Samples for qualification. Samples for qualification shall be representative of the products
proposed to be furnished to the Government. Samples, consisting of 12 hose assemblies of each size
and two lengths of hose of the lengths specified in tables IV and V, as applicable, shall be subjected to
qualification testing. Except for examination of hose and proof pressure, at the discretion of the
manufacturer, hose or hose assembly samples maybe subjected to multiple tests.
4.4.3 Acceptance of qualification inspection data. Required qualification tests at the hose assembly
level that were already performed at the bulk hose level may be eliminated if documented approval has
been obtained from the qualifying activity.
4.4.4 Alternate qualification inspection criteria. Hose shall meet the qualification requirements of
4.4.2. Alternatively, when the identical fittings are manufactured and tested in accordance with
MIL-DTL-83798, and identical hose assemblies are manufactured and tested in accordance with
MIL-DTL-83796, using identical hose in accordance with MIL-DTL-83797, it is not necessary to test the
hose to meet the qualification requirements of this specification. This applies when substantially identical
test requirements and test procedures are required for the assembly and the individual components and
upon documented approval by the qualifying activity.
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