MIL-PRF-6164G
then allowed to return to ambient temperature. The valve shall be subjected to the leakage test in
4.6.2.1 after each of the five 100 cycle sequences.
4.6.4 Burst pressure. The valve shall be installed in a boss as specified in 4.4.3. Hydraulic or air
pressure equal to 2.5 times the valves maximum rated pressure shall be applied for at least 15
seconds. There shall be no evidence of failure or leakage.
4.6.5 M6164-3 and M6164-12 helium leak. The valve shall be subjected to the leakage test
specified in SAE-AMS-2610 while immersed in water and pressurized between 16 to 18 psig
using helium conforming to BB-H-1168, Grade B. There shall be no leakage.
4.6.6 Flow rate. With the valve fully opened, the maximum rated pressure shall be applied to
the valve stem (see figure 1). The minimum flow through the body of the valve shall be 80 LPM.
4.6.7 Audible pressure warning feature. The valve shall be installed in a boss as specified in
4.4.3. With the valve and boss pressurized between 50 psig and maximum rated pressure, the
valve body shall be loosened from the boss. The air escaping through the feature shall create an
audible sound.
4.6.8 Salt fog. If specified (see 6.2), the valve, with inlet and outlet plugged, shall be subjected
to the salt fog test in accordance with ASTM-B117 for 50 hours. There shall be no damage to the
valve. The valve shall then be subjected to the leakage test in 4.6.2.1.
4.6.9 Nut travel. The nut shall be turned CW to the closed position and then CCW to the fully
open position. The rotation of the nut between closed and opened positions shall be between 1 to
2 ¼ turns. The nut rotation shall stop at the closed and fully open positions.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house
contractor personnel, these personnel need to contact the responsible packaging activity to
ascertain packaging requirements. Packaging requirements are maintained by the Inventory
Control Point's packaging activities within the Military Service or Defense Agency, or within the
military service's system commands. Packaging data retrieval is available from the managing
Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is
not mandatory.)
6.1 Intended use. The high pressure air valves covered by this specification are intended for use
in gas-charged units such as shock-absorber struts, hydraulic-pressure accumulators, surge
cylinders, and air bottles which may be in JSSG 2009 Pneumatic Power Systems, High Pressure
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