MIL-DTL-19803G
3.4.5 Combination fill-buildup-vent valve. The combination fill-buildup-vent valve, as a
component only, shall meet the performance requirements of MIL-PRF-25961.
3.4.6 Relief valve. The relief valve, as a component only, shall meet the performance
requirements of MIL-PRF-9050, Type II.
3.4.7 Pressure control valve. The pressure control valve shall be a pressure closing (shut-
off) valve.
3.4.8 Check valve. The check valve, if used, shall be spring loaded.
3.4.9 Test port. A test port with a cap and retaining chain shall be incorporated in the
tubing and located in such a manner that the entire converter assembly can be pressurized
through the test port.
3.4.10 Secondary overpressure safety device. A secondary overpressure safety device,
incorporating a frangible safety burst disc, shall be embodied in the plumbing of the converter.
The location of the safety device shall be such that it will ensure rapid dumping of the head
pressure from the converter in the event the pressure relief valve fails to open. The safety device
shall contain a visible means of ascertaining the condition of the frangible safety burst disc
without disassembly.
3.4.11 Shock mounts. Shock mounts and sway clearance due to shock mounting shall be
within the specified envelope.
3.4.12 Antiseize tape. Antiseize tape shall be used on all male pipe thread fittings.
Antiseize tape shall conform to and shall be applied as specified in A-A-58092. Tape shall not
be used on flare tube fittings, straight threads, coupling sleeves, or on the outer side of tube flares.
None of the tape shall be allowed to enter the inside of a fitting.
3.4.13 Mounting base. The mounting base shall conform to the configurations and
dimensional requirements on figure 4.
3.5 Performance.
3.5.1 Permanent volumetric expansion. The permanent volumetric expansion of the inner
vessel shall be not greater than 10 percent of the volumetric expansion at the test pressure when
tested as specified in 4.6.2. There shall be no evidence of mechanical or material failure.
3.5.2 Pressure tests.
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