MIL-DTL-9370E
TABLE III. Classification of defects for visual examination of the valve. (Continued)
Critical
Minor
4.
Any component loose or otherwise not
securely retained.
5.
Incorrect assembling or improper
positioning of components.
6.
Any functioning part that works with
difficulty.
7.
Faulty workmanship or other
irregularities.
4.6.1.2 Dimensions and configuration. The dimensions and configuration shall be checked
to determine conformance to the specified dash number of MS24350.
4.6.2 Minimum operating acceleration force. A buzzer shall be installed as specified in
4.5.4.1 during this test. The pressure regulating valve shall be subjected to inlet pressures of 30,
100, 200, and 300 psi. The acceleration force required to open the valve at each inlet pressure
shall be as specified in 3.5.1.
4.6.3 Outlet pressure regulations. A buzzer shall be installed as specified in 4.5.4.1 and a
tank connected as specified in 4.5.4.2 during this test. A source of pressurized gas shall be
connected to the inlet port and a mercury manometer connected to the outlet. The inlet gas
pressure shall be increased and maintained at 30 psig while acceleration forces of 2g, 4g, 6g, 8g,
10g, 8g, 6g, 4g, 2g, and 1g are applied in this sequence to the valve. Each force shall be
maintained for at least 30 seconds before applying the next force. After completing the 30 psig
inlet pressure phase, the inlet pressure shall be increased to 100, 200 and 300 psig, and the test
repeated at each of these inlet pressures. The outlet pressures shall be as specified in 3.5.2.
4.6.4 Leakage. A source of pressurized gas shall be connected to the inlet connections, and
a flow meter shall be connected to the outlet connection. The inlet pressure shall be increased to
and maintained at 300 psig for at least one minute while a force of 1g is applied to the valve.
The leakage shall be not greater than that specified in 3.5.3.
4.6.5 Anti-chattering. A buzzer shall be installed as specified in 4.5.4.1 and a tank
connected as specified in 4.5.4.2 during this test. A source of pressurized gas shall be connected
to the inlet connection. The inlet pressure shall be increased to and maintained at 300 psig. The
pressure regulating valve shall be fully opened manually and held open until there is a flow
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