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Page Title:
Table I. Materials and application. |
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|  MIL-V-17501F(SH)
3. REQUIREMENTS
3 . 1 Qualification. Valves furnished under this specification shall be products which are
authorized by the qualifing activity for listing on the applicable qualified products list at the time
of award of contract (see 43 and 6.5).
3.2 Materials. The materials of parts shall be as specified in table I. Alternate materials not
specified herein shall not be used unless prior approval by Naval Sea Systems Command
(NAVSEA) has been received. Such materials shall be suitable for long-term reliable service under
the operating conditions specified. Such materials shall be subject to the results of qualification
tests and examinations and to acquiring activity concurrence. In selecting materials, contractors
should consider that, in addition to service usage, these valve assemble.. shall be subject to periods
of inactivity. Lightness of weight shall be a consideration; use of magnesium is not approved. For
parts working against each other, materials shall be selected to prevent galling, seizing, and
excessive wear. Material identification shall include the commercial, industrial, federal, or military
specification to which the material conforms and shall indicate the type, grade, or class of the
material if classified in the applicable material specification. Materials used in the construction of
components shall be shown and identified on the appropriate drawings and associated lists of those
components (see 6.3).
TABLE I. Materials and application.
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