MIL-DTL-8789F
3.6.5 Impulse. The hose assembly shall not show any evidence of leakage, burst, or fitting loosening
or blow-off, when tested in 4.9.6.
3.6.6 Low temperature flexibility. The hose assembly shall not leak or fail during or at the completion
of the test, when tested in 4.9.7. There shall be no visual evidence of damage or permanent deformation.
3.6.7 Over-tightening torque. The fitting assembly shall not show any evidence of material failure,
deformation of the assembly or difficulty in turning the swivel nut on the nipple by hand, when tested in
3.7 Brazing. Unless otherwise specified, fittings requiring brazing shall be copper hydrogen brazed
in accordance with AWS C3.4.
3.8 Welding. Fittings requiring welding shall be welded in accordance with AWS D17.1.
3.9 Identification of product. Each end fitting assembly shall be identified with a durable permanently
attached tag. This tag shall show the PIN, Commercial and Government Entity (CAGE) code, and
manufacturer's name or trademark.
3.10 Workmanship. All parts of the end fitting shall be uniform in quality and free from irregularities,
defects, or foreign matter.
4. VERIFICATION
4.1 Classification of inspection. The inspection requirements specified herein are classified as
follows:
a. Qualification inspection (see 4.5).
b. Conformance inspection (see 4.6).
4.2 Inspection conditions. Unless otherwise specified, all required inspections shall be performed in
accordance with the test conditions specified in 4.8.
4.3 Test equipment and inspection facilities. Test and measuring equipment and inspection
facilities of sufficient accuracy, quality, and quantity to permit performance of the required inspection
shall be established and maintained by the contractor. The establishment and maintenance of a
calibration system to control the accuracy of the measuring and test equipment shall be in accordance
with NCSL Z540 -1 or equivalent.
4.4 Responsibility for compliance. All items shall meet all requirements of sections 3, 4, and 5. The
inspection set forth in this specification shall become a part of the contractor's overall inspection system
or quality program. The absence of any inspection requirements in the specification shall not relieve the
contractor of the responsibility of ensuring that all products or supplies submitted to the Government for
acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing
operations, is an acceptable practice to ascertain conformance to requirements, however, this does not
authorize submission of known defective material, either indicated or actual, nor does it commit the
Government to accept defective material.
4.5 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to
the qualifying activity on sample units produced with equipment and procedures used in production.
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