MIL-DTL-24695C(SH)
4.3.1.2.1.1 Proof pressure (uncapped valve). The valve, with the cap removed, shall withstand a proof pressure
of 465 bars (6,750 lb/in2) applied to the inlet with the outlet port blocked without evidence of permanent
deformation, malfunction, or leakage other than a slight wetting insufficient to form a drop. The proof pressure shall
be applied once.
4.3.1.2.1.2 Leakage (uncapped valve). The valve shall be uncapped, actuated, and then subjected to a pressure
of 310 bars (4,500 lb/in2) with no leakage other than a slight wetting insufficient to form a drop.
4.3.1.2.1.3 Leakage (capped valve). The male connection of the valve cap and probe seal in the valve
(see 3.4.1.3) shall be subjected to a pressure of 310 bars (4,500 lb/in2) with no leakage other than a slight wetting
insufficient to form a drop. The method to accomplish this test shall be determined by the manufacturer and may
include coupling the cap to a separate valve, with the check valve device removed.
4.3.1.2.2 Hose assembly. The hose assembly shall withstand proof pressure of 620 bars (9,000 lb/in2) without
evidence of permanent deformation or external leakage. Proof pressure shall be applied once. See 4.3.
4.3.1.2.3 Adapters. The adapter shall withstand proof pressure of 465 bars (6,750 lb/inē) applied to the inlet
with the outlet port blocked without evidence of permanent deformation or rupture.
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 vent and test valves, hose assemblies, and adapters covered by this specification are
intended for use in hydraulic systems at a maximum operating pressure of 310 bars (4,500 lb/in2). Vent and test
valves are intended for permanent or temporary installation; whereas, hose assemblies and adapters are intended for
temporary test equipment. These components are intended to provide a convenient means of connecting hydraulic
system piping or components to instrumentation or gages for the purpose of pressure measurement with a minimum
of system fluid loss or contamination. They are also intended for the purpose of taking fluid samples, bleeding air
from a hydraulic system, or venting of system pressure with a minimum of safety risk to the operator. Selected
adapters are intended for coupling to MIL-V-81940/1-1 and MIL-DTL-81940/4-3 sampling and bleed valves to
support the above functions. The vent and test valves are intended for use in systems that require two barriers for
pressure containment. Material selection for valve should consider compatibility with mating system to avoid
galling of valve threads, for example: selection of NiCu alloy valve or the use of dry film lubricant per
SAE AS1701 for valve thread coating for an application that involves mating with CRES component or piping
fitting threads.
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