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|  MIL-V-17360E
4.5.3.1 Alternative leakage test. This test shall be considered as
evidence of conformance with 4.5.3 if performed on 100 percent of production
While pressurized at a minimum of 1000 lb/in2 on the inlet side at approximately
70 F, each valve shall be submerged in water for a minimum of 60 seconds.
Evidence of leakage or other signs of failure shall be cause for rejection.
4.5.4 Salt spray corrosion test. Each valve (except for siphon tube) shall
be subjected to the salt spray (fog) test in accordance with ASTM B 117, except
that the salt solution shall be 20 percent, for a period of not less than 200
hours . For the purposes of this test, the inlet and discharge openings of the
valve shall be plugged to prevent salt spray from entering the valve, At the
conclusion of the above exposure, the valve shall perform satisfactorily, as
demonstrated in the following tests.
4.5.5 Shock test. The valve shall be mounted on its respective cylinder
and subjected to shock testing for grade A, class I, type A, lightweight equip-
ment, as specified in MIL-S-901. The cylinder on which the valve is mounted
shall be filled to 68 percent or more of its volume with water and pressurized to
850 lb/in2 with air or nitrogen. At the end of the shock test, the valve shall
stand for a minimum of 10 minutes. Distortion or leakage shall be evidence of
The valve shall be operated for a minimum of two short blasts. Failure
failure.
to operate properly shall be evidence of failure. Successful shock testing for
conformance with MIL-E-2185, MIL-E-2186, or MIL-E-24269 (as applicable) shall be
considered evidence of conformance with the shock requirements specified herein.
4.5.6 Discharge duration test. The valve with siphon tube shall be mounted
on its respective cylinder. For a class B valve, the cylinder shall be as speci-
fied in MIL-E-24269 and charged with 15 + 0.5 pounds of carbon dioxide. For a
class C valve, the cylinder shall be as specified in MIL-E-2185 or MIL-E-2186 and
charged with 50 + 1 pounds of carbon dioxide. The cylinder and valve shall be
conditioned to 70 F. The valve shall be fully and continuously opened until the
gas point is reached. The duration of discharge from actuation to gas point
shall be recorded. Failure to meet the discharge duration criteria of 3.4.3.1
or 3.4.3.2 (as applicable) shall constitute failure of this test.
4.5.7 Low temperature storage and operation test. The valve with siphon
tube shall be mounted on its respective cylinder and charged with carbon dioxide.
After the valve and cylinder have been dried to eliminate moisture, they shall
be placed in a cold room, and the temperature reduced to minus 40 F. A small-
diameter tube shall be attached to the discharge connection to determine leakage.
The length of the tube shall be kept to a minimum; its free end shall be immersed
into an antifreeze solution. The antifreeze solution shall not come in contact
with the valve. The valve shall remain at minus 40F for a period of 6 hours.
Examine the valve for leakage. Operate the valve for at least four short bursts.
Examine the valve for leakage. Failure to operate or evidence of leakage or
damage shall be cause for rejection.
4.5.8 High temperature storage and operation test. The valve with siphon
tube shall be mounted on its respective cylinder and charged with carbon dioxide
to not more than 60 percent of the cylinder volumes The valve and cylinder shall
be submerged in water at 130 F for a period of 4 hours. Examine the valve for
leakage.
Operate the valve for at least four short bursts. Examine the valve
for leakage. Failure to operate or evidence of leakage or damage shall be cause
for rejection.
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