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Proof pressure for quality conformance |
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|  MIL-V-81995(AS)
4.5.20
Individual inspection tests.
4.5.20.1
Examination. Each valve shall be subjected to a
careful inspection to insure all external dimensional tolerances are
within specification and drawing limits and that all parts are correctly
assembled.
4.5.20.2
Dielectric strength. The valve's electrical circuit
shall be subjected to a dielectric strength test which meets the requirements
of MIL-G21480.
4.5.20.3
Proof pressure for quality conformance. With the
valve in the closed position and the outlet port open to atmospheric
pressure, apply an air pressure equal to two times the maximum inlet air
pressure, as specified in the specification sheet, to the inlet port of
the valve for a period of 1 minute Repeat this test except that the
valve shall be in the open position and the outlet port shall be capped.
4.5.20.4
cycling. The valve shall be operated for 5 cycles
at ambient temperature using air at rated inlet pressure and temperature
and 14-volt do electrical power applied to the receptacle terminal.
4.5.20.5
Actuation. The valve shall be connected to a 28-
volt do electrical power source and actuated twice at each of the inlet
conditions specified in the specification sheet, Valve operation shall
be smooth and the opening and closing rates shall be within the limits
specified herein and in the specification sheet. Current draw shall not
exceed that specified in 3.6.10.
4.5.20.6
Leakage for quality conformance. Internal and total
leakage shall be measured with the valve in the closed position and with
the valve inlet air at ambient temperature and minimum pressure and then
at maximum temperature and maximum pressure specified in the specification
sheet and shall not exceed the limits specified in the specification
sheet.
5.
PACKAGING
5.1
Application. The requirements specified herein
apply only to direct purchases by or direct shipments to the Government.
5.2
Presentation. All ports shall be sealed by closures
conforming to MIL-C-5501. All exterior surfaces of the component shall
be protected by corrosion-preventative compounds conforming to MIL-C-
11796 or MIL-C-16173. The component shall then be wrapped or bagged in
Grade A greaseproof paper conforming to MIL-B-l2l and sealed with tape
conforming to PPP-T-600
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