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|  MIL-V-17501F(SH)
3.7.1 Atmosphere. The valves shall be constantly exposed to a marine environment that shall
be understood to include extremes of ambient temperatures, high humidity in a sea atmosphere,
and conditions conducive to electrolytic corrosion of dissimilar metals.
3.7.2 High impact shock The valves shall be constructed to withstand high impact shock and
remain functionally reliable. The valves shall pass the shock test specified in 4.6.1. For general
information on shock tests, MIL-S-901 should be consulted.
3.7.3 Vibration. The valves shall be exposed to ship environmental vibrations. They shall meet
the vibration requirements as specified in 4.6.2.
3.8 Safety criteria. The construction shall be so that valve operation and any necessary
maintenance shall be effected in a safe manner. Exposed edges shall be rounded and made smooth
to prevent injury to personnel. There shall be no pockets that can retain pressure after pressure
to the valve has been released.
3.9 Interchangeability. In no case shall parts be physically interchangeable or reversible unless
such parts are also interchangeable or reversible with regard to function, performance, and strength.
3 . 1 0 Cleanliness.
Parts shall be thoroughly cleaned after manufacture. After assembly,
internal areas shall be purged clean of all construction debris, then the openings shall be sealed
against contamination.
Valves and valve parts shall be marked as specified below.
3.11 Marking.
3.11.1 Direction of flow. If the valves are constructed so that flow through the valves is
permissible in one direction only, an arrow indicating the direction of flow shall be cast on or
otherwise made a permanent part of the valve body. Stamping or other practices which reduces
body thickness shall not be acceptable.
3.11.2 Valve parts. Parts shall be marked for identification on a nonworking surface. Marking
shall be in accordance with MIL-STD-130. In addition, when specified (see 6.2), the discs shall
be stamped to indicate the intended use and the design capacity of the valve. Furnished union
connections shall contain the required markings as specified in MIL-F-1183.
3 . 1 1 3 Identification plate. An identification plate in accordance with MIL-P-15024, and
MIL-P-15024/5 shall be permanently attached to all valves. Type 11 valves identification information
may be contained on the valve dial plate (see 3.6.12). Identification plates shall contain the
following information:
Contractor's name or trademark
Valve size and rating
Contractor's identification number (Commercial and Government Entity (CAGE))
MIL-V-17501 (military specification number)
Component identification number (CID)
Contract number.
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