MIL-PRF-25961H
3.10 Toxic chemical, hazardous substances, and ozone depleting chemicals (ODCs). The
use of toxic chemicals, hazardous substances or ODCs shall be avoided, whenever feasible.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. Qualification (see 4.2).
b. Conformance inspection (see 4.3).
4.2 Qualification inspection. Qualification inspection shall be performed on a minimum
of two valves and shall include all the tests and examinations in 4.6.
4.2.1 Verification inspection. When required by the procuring activity (see 6.2),
verification inspection shall be performed on two valves and shall include all the tests and
examinations in 4.3 and in 4.6.14 and 4.6.17. Verification inspection shall be performed when a
qualified manufacturer has not produced a CRU-50A valve for three years or there has been a
4.3 Conformance inspection. Conformance inspection shall include the tests in 4.3.1 and
4.3.2.
4.3.1 Individual tests. Each valve shall be subjected to the tests below.
a. Visual examination (see 4.6.1).
b. Cleanliness (see 4.6.2).
c. Fill check element leakage (see 4.6.3).
d. Fill inlet port and vent port back pressure leakage (see 4.6.4).
e. Gas port leakage (see 4.6.5).
4.3.2 Sample tests. In addition to the tests indicated in 4.3.1, valves shall be sample
inspected based on ANSI/ASQ Z1.4 (see 6.7 for guidance). A sample of valves shall be
subjected to the following examinations and tests and shall not be used as deliverable items.
a. Visual examination (dimensional only) (see 4.6.1).
b. Fill cycle flow rate (see 4.6.7).
c. Vent cycle flow rate (see 4.6.8).
d. Buildup cycle flow rate (see 4.6.9).
e. Functional test (see 4.6.13).
f. Proof pressure (see 4.6.15).
4.4 Inspection condition.
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