MIL-PRF-8622C
3.5.12 Oxygen test.
3.5.12.1 Oxygen ignition. The nonmetallic material and valve shall not ignite and there shall be
no evidence of charring or deterioration when tested as specified in 4.5.13.
3.5.12.2 Oxygen purge. The valve shall not ignite and there shall be not any evidence of charring
or deterioration when tested as specified in 4.5.13.2.
3.5.13 Disassembly and examination. The valve shall show no evidence of deterioration or wear
due to testing that will affect the valve performance when examined as specified in 4.5.14.
3.6 Interchangeability. All parts having the same manufacturer's part number shall be
interchangeable functionally and dimensionally.
3.7 Weight. The total weight of the valve assembly, exclusive of the outlet cap, shall be not
greater than 14 ounces.
3.8 Identification of product. The valves shall be marked for identification in accordance with
MIL-STD-130 except that the national stock number shall be omitted.
3.9 Superseding part numbers. This valve assembly supersedes the MS22012 valve assembly.
The new part numbers which supersedes the corresponding old MS part numbers are as shown in
table II.
3.10 Workmanship. The valves shall be uniform in quality and shall be free from irregularities,
defects or foreign material which could adversely affect safety, performance, reliability, or
durability.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as
follow:
a. First article inspection (see 4.2)
b. Conformance inspection (see 4.3)
4.2 First article inspection. First article inspection consists of examination and test of the
production item after award of a contract to determine the production item conforms to the
requirements of this specification. First article inspection shall consist of all examinations and
tests of this specification.
4.2.1 First article samples. Unless otherwise specified (see 6.2), the manufacturer shall submit 4
valves and 6 elastomer test slabs, 5 inches by 6 inches by 0.075 inch, composed of identical
ozone-resistant composition and cure that was used in manufacturing the elastomer components.
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