MIL-PRF-23256C
per MIL-R-81202. The test fixture shall provide an operating pressure of 3,800 ±100 psig to the
seal valve assembly inlet. The seal valve shall be connected to a test fixture and the outlet port of
the seal valve shall be mated with an operational control valve MIL-V-23254. The seal valve shall
connect the control valve with 50 ±5 inch-pounds clockwise torque. Unless otherwise specified
herein, the test fixture shall be used for all tests of 4.5.2 through 4.5.14.
4.4.5 Installation Torque. The torque required for installation of seal valve to the receiver
assembly or test fixture shall be 400 ±25 inch-pounds. The torque required for installation of
filter cartridge assembly to the seal valve shall be 250 to 275 inch-pounds.
4.4.6 Flow measurements. All volume and flow measurements shall be corrected to normal
temperature and barometric pressure (NTP) conditions when comparison of volume and flow data
is required. NTP conditions are 29.92 inches (760 millimeters) of mercury and 70°F (21.1°C).
4.5 Methods of inspection.
4.5.1 Visual examination and dimensional inspection.
4.5.1.1 Visual examination. The seal valve assembly shall be visually examined for critical
defects listed in table IV and shall pass the requirements specified in 3.5.1.1.
4.5.1.2 Dimensional inspection. The seal valve assembly shall be dimensionally inspected for
conformance to the requirements of 3.5.1.2.
TABLE IV. Classification of defects for visual examination of the seal valve assembly.
Critical
Minor
101. Material imperfections - foreign matter
201. Marking - missing, insufficient,
embedded.
incorrect, not legible, or not
permanent.
102. Surface - contains water, hydrocarbons,
and foreign matter or cracks, nicks,
or other flaws.
103. Any missing component, or component
malformed, fractured, or damaged.
104. Any loose component or component not
securely retained.
105. Incorrect assembling or improper positioning
of components.
106. Any malfunctioning part or part that works
with difficulty.
107. Faulty workmanship or other irregularities.
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