MIL-PRF-27401G
Upon completion of a valid test the filter shall be removed from the housing and weighed to the nearest
0.1 mg.
4.5 Containers of Type I nitrogen.
4.5.1 Filling pressure. Containers shall be stabilized to 21°C (70°F). Containers shall be tested
for proper filling pressure by attaching a calibrated Bourdon-tube gauge or calibrated electronic equivalent
gauge to the valve outlet. The gauge shall have scale divisions not greater than 100 kPa (15 psi). Then
the valve shall be opened and the internal pressure observed on the gauge. If the internal pressure differs
from the applicable filling pressure value by more than 100 kPa (15 psi), the container, and all other
containers filled from the same manifold at the same time, shall be rejected.
4.5.2 Leakage. Each Type I nitrogen container shall be tested for leaks at the neck threads,
stem packing, and safety device of the valve with leak detection fluid. Valve seat leakage shall be tested
after filling has been completed by connecting a hose to the valve outlet and placing the other end of the
hose under the surface of a liquid. Methods of leak detection and/or the leak check guidance in CGA P-
15 may also be used.
4.5.3 Inspection and Maintenance. Compressed gas cylinders shall be inspected, maintained,
and charged according to MIL-STD-1411.
4.5.3.1 Valves. Valves shall conform to A-A-59860.
4.5.3.2 Color Coding. Government-owned cylinders shall be color coded according to MIL-STD-
101.
FIGURE 1. Filter, Cryogenic Liquids
8
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business