MIL-PRF-87108B
transfer assembly shall be allowed to reach ambient conditions. When the pressure has stabilized
at a minimum value, the pressure shall be further reduced manually to 100 psig. The pressure at
the transfer assembly shall be maintained for at least 30 minutes after temperature stabilization.
There shall be no leakage from the transfer assembly.
4.6.7 Vent leakage. With the inlet of an open transfer assembly plugged, a gas pressure of 2.0
psig shall be applied at the outlet of the transfer assembly. Any gas leakage shall be trapped in a
suitable container with a maximum volume of 1 cubic inch. There shall be no pressure decay
greater than 0.2 psig/min. Nitrogen, oxygen, air, or carbon dioxide may be used for this test.
4.6.8 Vent flow. A gas pressure equivalent to 8 inches of water shall be applied to the outlet of
a closed transfer assembly. The gas flow past the vent opening shall be less than 61 cubic inches
per minute. Nitrogen, oxygen, air, or carbon dioxide may be used for this test.
4.6.9 Actuator operation. A charged inflation device, with the transfer assembly in the closed
position, shall be connected to an LRU-16/P or LRU-17/P life raft. Using a measuring device that
is accurate to 0.25 lbs, the force required to actuate the transfer assembly shall be determined.
The force applied to the actuator shall be parallel to the longitudinal axis of the transfer assembly.
The transfer assembly shall open fully with an operating force of at least 15 lbs but not more than
21 lbs. The inflation device shall inflate the LRU-16/P or LRU-17/P inflatable life raft to its
designed shape, size, and minimum pressure within a maximum of 30 seconds. No damage to the
transfer assembly body or the actuator shall occur as the result of the inflation or actuator
operation.
4.6.10 Operation at 70 °F. An inlet check valve (see 4.5.6) is required for this test and shall be
installed in the transfer assembly. A charged inflation device, with the diffuser removed, shall be
stabilized at a temperature of 70 ± 5 °F. Once stabilized, it shall be weighed on a scale or balance
accurate to at least 0.002 lbs, to the nearest 0.01 lb. While maintaining the inflation device at 70
± 5 °F , it shall be securely restrained in a horizontal position and the transfer assembly activated
for not more than 5 seconds. The transfer assembly shall then be securely closed. The venting of
inflating medium into the atmosphere shall be observed. Immediately following the discharge, the
transfer assembly shall be wiped dry and reweighed. The inflation device shall have discharged a
minimum of 90 percent of the inflating medium charge, by weight, in not more than 5 seconds,
without leakage from the transfer assembly body. For this test, a cocking tool may be substituted
for the actuator.
4.6.11 Operation at -20 °F. An inlet check valve shall be installed in the transfer assembly. A
charged inflation device, with the diffuser removed, shall be stabilized at a temperature of
20 ± 2 °F. Once stabilized, it shall be weighed on a scale or balance accurate to at least 0.002
lbs, to the nearest 0.01 lb. While maintaining the inflation device at 20 ± 2 °F, it shall be
securely restrained in a horizontal position and the transfer assembly activated for not more than 5
seconds. The transfer assembly shall then be securely closed. The venting of inflating medium
into the atmosphere shall be observed. Immediately following the discharge, the transfer assembly
shall be wiped dry and reweighed. The inflation device shall have discharged a minimum of 50
10
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business