MIL-PRF-9439F
SAE INTERNATIONAL
- Aviator s Breathing Oxygen Purity Standard
SAE AS8010
SAE AS71051
- Pipe Threads, Taper, Aeronautical National Form,
Symbol ANPT-Design and Inspection Standard
(SAE documents may be obtained at https://www.sae.org/ or from Society of Automotive
Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a
conflict between the text of this document and the references cited herein, the text of this document
takes precedence. Nothing in this document, however, supersedes applicable laws and regulations
unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 First article. When specified (see 6.2), a sample shall be subjected to first article
inspection in accordance with 4.2.
3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,
or environmentally preferable materials should be used to the maximum extent possible,
provided that the material meets or exceeds the operational and maintenance requirements, and
promotes economically advantageous life cycle costs.
3.3 Materials. All materials shall be corrosion-resistant or suitably treated to resist
corrosion due to electrolytic decomposition, salt spray, and any other atmospheric condition that
may be encountered during operational use or storage. The use of toxic chemicals, hazardous
substances, or ozone depleting chemicals shall be avoided, whenever feasible.
3.3.1 Safety specific materials. All materials used shall be capable of operating safely in
a pure oxygen environment without creating a fire or health hazard. Lubrication shall be
compatible with pure oxygen environment (see 6.5). Aluminum alloys shall not be used.
3.4 Interface.
3.4.1 Dimensions. The dimensions of the valve shall be in accordance with figure 1.
3.4.2 Valve outlet. The valve outlet shall be in accordance with FED-STD-H28/9 (see
figure 1).
3.4.3 Threads. Inlet pipe threads shall be in accordance with SAE-AS71051.
3.4.4 Handwheel markings. Handwheel shall be marked as shown in figure 1.
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