MIL-DTL-27166F
3.6.5.2 Humidity.
The valves shall be capable of withstanding, without degradation of performance attributes,
relative humidity up to 95 percent at 160 °F (71 °C) during operation and nonoperation.
3.6.5.3 Vibration.
The valves shall be capable of withstanding, without degradation of performance attributes,
vibration incident to service use during operation and nonoperation.
3.6.5.4 Sand and dust.
The valves shall be capable of withstanding, without degradation of performance attributes,
sand and dust particles encountered in desert areas during operation and nonoperation.
3.6.5.5 Rough handling.
The valves shall be capable of withstanding, without degradation of performance attributes,
rough handling which may be encountered during shipping and service life.
3.6.5.6 Salt fog.
The valves shall be capable of withstanding, without degradation of performance attributes,
exposure to salt atmosphere as encountered in coastal areas.
3.7
Identification of product.
The valves shall be marked for identification in accordance with MIL-STD-130.
3.8
Workmanship.
All parts of each valve shall be constructed and finished in accordance with good commercial
practice. Particular attention shall be given to the machining of mating parts, finish of sealing
surfaces, freedom of parts from burrs and sharp edges, and the removal of chips and other
foreign material prior to and after assembly.
4.
VERIFICATION
4.1
Classification of inspections.
The inspection requirements specified herein are classified as follows:
a. First article inspection (see 4.3).
b. Conformance inspection (see 4.4).
4.2
Inspection conditions.
Unless otherwise specified, all inspections shall be performed in accordance with the test
conditions specified in 4.5.
4.3
First article inspection.
When specified, in the contract or purchase order, first article inspection shall be performed by
the contractor, after award of contract and prior to production, at a location acceptable to the
Government. First article inspection (see table I) shall be performed on sample units which
have been produced with equipment and procedures normally used in production. First article
approval is valid only on the contract under which it is granted, unless extended by the
Government to other contracts. A certified test report (see 6.3) shall be submitted to the
cognizant engineering activity.
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