MIL-PRF-27415C
4.4.1 Argon content. The argon content in percent shall be found by determining the aggregate
impurities by the methods described in 4.4.2. The aggregate impurities shall include all the impurities
listed in Table I, regardless of Grade. The percent argon is the value obtained when the aggregate
impurities, expressed as volume percent, are subtracted from 100 percent.
4.4.2 Impurities. The analytical procedures described in CGA G-11.1 shall be used to determine
the concentrations of those impurities listed in Table I.
4.5 Filled container tests (Type I only).
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. Then the valve shall be opened and the internal pressure observed on the
gauge.
4.5.1.1 Service pressures lower than 25 MPa (3625 psi). The gauge shall have scale divisions
not greater than 100 kPa (15 psi). 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.
4.5.1.2 Service pressures greater than 25 MPa gauge (3625 psig). The gauge shall have scale
divisions not greater than 700 kPa (100 psi). If the internal pressure differs from the applicable filling
pressure value by more than 700 kPa (100 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 argon 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.
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 argon is intended to be used as a welding, purging, pressurizing,
atmospheric inerting agent or missile checkout gas in various military and space application systems.
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business