The Raft Inflation Valve (part number B44800-1) is an integral
part of raft inflation systems. It is a mechanically actuated cable
pull device that discharges gas through a single outlet port.
This valve is used to inflate emergency life rafts on a variety
of commercial aircraft. It has been qualified to and is compliant
with Technical Standard Order (TSO) C70 (life rafts).
Features:
The inflation valve utilizes a simple cable pull to activate flow
and incorporates a hemi-spherical pull capability. Actuation pull
forces range from 20 to 30 pounds, over a temperature range of -40
to 160 deg F, with a bottle pressure of 3,300 psig at 70 deg F.
Using a simple shop tool, the cable can be easily reinstalled and
the valve quickly reset for actuation without the need for
disassembly.
Activation cable is connected to a lever which, when rotated
approximately 90 degrees by the pull of the cable, pushes a poppet
device away from its seat thereby releasing the gas from an attached
vessel. The poppet is a pressure-closing style which assures the
least amount of pressure decay over long periods of time. The valve
is a "dump" style and does not incorporate a regulator in the
design.
Specifications:
Operating Pressure
3,300 psig
(228 bar)
Actuation Force
30 lbs pull max 20 lbs pull min
Discharge Rate
Equivalent to supply pressure through
0.133 dia. orifice
