MIL-DTL-87223A (USAF)
TABLE II. Conformance inspection.
Test
Classification of
Acceptance
Test or Inspection
Method
Sample Size
Characteristics
Criteria
Visual examination
4.5.1
Every valve for
Critical
Reject all
critical defects.
valves with any
critical defects.
Inspection level II
Minor
An acceptable
for minor defects.
quality level of
2.5 defects per
hundred units
for minor
defects.
Dimensions and
4.5.1.1.1
Inspection level S-2
Major
Acceptance
configuration
number of 0,
rejection
number of 1.
Minimum operating
4.5.2
Every valve
Major
Acceptance
acceleration force
number of 0,
rejection
number of 1.
Outlet pressure
4.5.3
Every valve
Critical
Acceptance
regulation
number of 0,
rejection
number of 1.
Leakage
4.5.4
Every valve
Major
Reject all
defective units.
Anti-chatter
4.5.5
Inspection level I
Major
Acceptance
number of 0,
rejection
number of 1.
Response time
4.5.6
Every valve
Critical
Reject all
defective units.
Endurance 1/
4.5.13
See 4.3.1
Major
See 4.3.1
1/ This test is considered destructive. Valves subjected to this test shall not be considered or
shipped as part of the contract or purchase order.
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