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|  MIL-V-85033A(AS)
The charging valve shall be examined to ascertain that the
b.
packaging, packing and marking are in accordance with Sec-
tion 5.
4.6.3 Functional tests. To perform the functional tests specified herein,
requires the opening and closing of the charging valve. To open the valve,
turn the hex nut counterclockwise. Take care not to jam the valve in the open
position. To close the valve, turn the hex nut clockwise with a torque of 50
5 inch-pounds. During the closing procedure, a pressure of 75 25 psig shall
be applied to the inlet or outlet port to ensure purging. The charging valve
shall be subjected to the following tests.
4.6.3.1 Proof pressure. The charging valve shall be subjected to a proof
pressure test. The outlet port of the charging valve shall be pressurized to
5500 100 psig under the following conditions:
Charging valve closed; inlet port opened to atmosphere.
a.
Charging valve opened; inlet port sealed with the MS20813 cap
b.
supplied.
Each condition shall be maintained for three minutes. There shall be no
visual indication of permanent deformation.
.
4.6.3.2 Leakage. The charging valve shall be checked for leakage with its
outlet port pressurized to each of the following pressures for three minutes.
200 psig
a.
b.
1000 psig
c.
2200 psig
d.
3000 psig
e.
3800 psig.
Leakage shall not exceed 0.2 cubic centimeters per minute at any of the pres-
sures between 200 and 3800 psig.
4.6.3.3 Operating p ressure. The charging valve shall be subjected to an
operating pressure test. The inlet port shall be pressurized to 3800 100
psig. The charging valve shall be slowly opened to allow pressurization of
the fixture. The charging valve shall then be reclosed and the inlet pressure
line removed. The valve shall operate properly and leakage shall not exceed
0.2 cubic centimeters per minute, with the 3800 psig remaining in the fixture.
13
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