3.6.2 Oxygen-ratio. The percentage, by volume, of oxygen delivered
with respect to the total oxygen-air mixture delivered, when tested as
specified in 4.8.3, shall be in accordance with Table II.
3.6.3 Pressure-breathing characteristics. The outlet pressure of the
regulator, when tested as specified in 4.8.4, shall be in accordance with
3.6.4 Relief valve. When tested as specified in 4.8.5, the relief
valve shall begin to vent at a pressure no greater than 27 inches of water
pressure and shall vent a minimum of 45 lpm at a pressure no greater than
40.7 inches of water pressure (3.0 inches of mercury). Relief valve leakage
shall not exceed 0.01 lpm with a pressure of 17 inches of water pressure
applied after completion of the flow test.
3.6.5 Inward leakage. The inward demand chamber leakage of the
as regulator, where tested as specified in 4.8.6, shall not exceed 0.20 lpm.
3.6.6 Over-all regulator leakage. The over-all regulator leakage, when
tested as specified in 4.8.7, shall not exceed 0.01 lpm.
3.6.7 Outward leakage. The outward demand chamber leakage of the
regulator, when tested as specified in 4.8.8, shall not exceed 0.12 lpm. This
leakage includes the allowable relief valve leakage.
3.6.8 Demand valve leakage. When tested as specified in 4.8.9, there
shall be no demand valve leakage.
3.6.9 Supply valve leakage. The regulator, when tested aS specified
in 4.8.10, shall not show any evidence of leakage.
18.104.22.168 Pressure Gage Scale Error. The regulator pressure gage scale
tolerance when tested as specified in 22.214.171.124, shall be within the limits
specified in Table IV.
3.6.10 Lighting circuit. The lighting circuit of the regulator, when
tested as specified in 4.8.11, shall provide electrical continuity to
facilitate either 6 volt or 28 volt circuitry.
3.6.11 Emergency and test pressure. The regulator, when tested as
specified in 4.8.12, shall operate satisfactorily.
3.6.12 Flow Indicator. The white flow indicator of the regulator,
when tested as specified in 4.8.13, shall be fully visible. When the flow
is reduced to zero lpm, at all altitudes, the flow indicator shall not be
visible. The white flow indicator shall not operate in the "Normal Oxygen"
position without an oxygen flow.
3.6.13 Overload. The regulator, when tested as specified in 4.8.14,
shall not show any evidence of leakage or damage.
3.6.14 Low temperature operation. The regulator, when tested as
specified in 4.8.15, shall operate satisfactorily.