MIL-PRF-83178C
4.2 Qualification inspection. Qualification inspection shall be performed on two
regulators. The qualification inspection shall consist of the tests described in 4.6. At least one
regulator shall be subjected to the operating life span test.
4.3 Conformance inspection. Conformance inspection shall include the individual tests
in 4.3.1 and the sampling tests in 4.3.2.
4.3.1 Individual tests. Each regulator shall be subjected to the following tests.
a. Examination (see 4.6.1).
b. Excess flow characteristics (see 4.6.2).
c. Flow suction characteristics (see 4.6.3).
d. Added oxygen (see 4.6.4).
e. Pressure breathing characteristics (see 4.6.5).
f. Pressure relief device (see 4.6.6).
g. Static leakage (see 4.6.8).
h. Inward leakage (see 4.6.9).
i. Outward leakage (see 4.6.10).
j. Outlet leakage (see 4.6.11).
k. Supply valve leakage (see 4.6.12).
l. Emergency pressures (see 4.6.13).
m. Test mask pressures (see 4.6.14).
n. Flow indicator operation (see 4.6.15).
o. Panel lighting (see 4.6.16).
p. Test port altitude operations (see 4.6.17).
q. Pressure breathing test port leakage (see 4.6.18).
4.3.2 Sampling tests. Sampling tests shall be performed in accordance with the guidance
in ANSI/ASQ Z1.4. Sampling shall begin at the normal inspection level (see 6.4). The sampling
tests are:
a. Overload (see 4.6.19).
b. Maximum inlet pressure (see 4.6.20).
c. Altitude cycling (see 4.6.21).
d. Supply valve cycling (see 4.6.24).
e. Pressure relief device cycling (see 4.6.26).
f. Low temperature operation (see 4.6.27).
g. High temperature operation (see 4.6.28).
h. lever operating force (see 4.6.31).
i. Reliability test (see 4.6.34).
4.4 Test conditions. Unless otherwise specified in the test descriptions, all inspections
shall be performed in accordance with the test conditions specified in the applicable test method
documents applicable paragraphs in this specification.
a. Tests shall be performed at ambient atmospheric conditions.
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