MIL-PRF-25961H
(Application for copies should be addressed to ASTM International, 100 Barr Harbor
Drive, P.O. Box C700, West Conshohocken, PA 19428-2959)
2.3 Order of precedence. 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 Qualification. The valve furnished under this specification shall be the product that is
authorized by the qualifying activity for listing on the applicable qualified products list before
contract award (see 4.1 and 6.3).
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 promote
economically advantageous life cycle cost.
3.3 Workmanship. The valve, including all parts, shall be constructed in accordance with
commonly accepted industrial workmanship standards.
3.4 Materials. All materials shall be corrosion resistant or suitably treated to resist
corrosion due to electrolytic decomposition, salt air, and any other atmospheric condition that
may be encountered during operational use or storage. Materials shall be compatible with LOX
at -297°F.
3.4.1 Nonmetallic Materials. Unless otherwise specified, all nonmetallic materials shall
be tested in accordance with ASTM D 2512 and shall demonstrate no reaction when subjected to
98 J impact energy. For additional guidance selecting nonmetallic materials for LOX usage see
6.5.
3.5 Interface.
3.5.1 Dimensions. The dimensions of the valve shall conform to Figures 1 through 5.
3.5.2 Cap. The fill inlet port shall have a cap conforming to MS27566.
3.5.3 Filler valve CRU-59/E. The CRU-50/A valve shall have a fill inlet port that mates
with a CRU-59/E valve as specified in MIL-PRF-38201 (see Figure 5).
3.5.4 Threads. All pipe threads shall conform to ASME B1.20.1.
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