Filter
Top Products
B. The MD1127 Life preserver
1. Design and Construction
The MD1127 incorporates a dual chamber inflatable cell, which is
separated by an internal floating baffle. The floating baffle allows either
chamber to fully inflate the life preserver. The life preserver is styled as a
protective collar fitted around the neck and front chest. The protective collar
is constructed from a highly durable 6 oz. Nomex Omniweave. The outer
shell of the MD1127 is not integral with the inflation cell, but acts as a cell
enclosure by opening the Velcro
®
seals; when deflated, the inflation cell is
folded and placed back into the cell enclosure as shown in Figure 4.
The MD1127 includes a small carry pouch attached to the waist belt, and
two small pockets located on each of the insides of the front cover. A safety
whistle is supplied with the life preserver, attached to the bottom right section
of the bladder. A sea light is attached to the left side of the bladder.
2. Inflation System
The MD1127 dual chamber inflatable cell design incorporates a primary
inflation cell accessed from a CO
2
inflation system and an oral inflation
system, along with a secondary cell accessed from its own oral inflation
system. In case the primary inflation cell has been punctured, or fails to
inflate, the life preserver may be inflated orally by the secondary inflation
cell. The oral inflation systems consist of an oral tube and oral valve. The oral
valve is normally closed, and is opened by depressing the mouthpiece when
inflating or deflating.
3. Inflation Cell
The polyurethane coated nylon dual chamber inflation cell is not integral with
the outer shell of the life preserver, but is connected to the outer shell only
by the inflation system. The dual chamber cell is in the form of an inflatable
head support collar, which fits around the neck and chest. The primary
chamber of the cell is located on the outer front side of the inflation cell,
while the secondary cell is located on the inner side of the inflation cell.
The dual chamber cell is fully inflated with one 35 gram cylinder of
compressed CO
2
gas.
4. Fasteners
The MD1127 has easy-to-use, Velcro
®
, hook and loop fasteners on each
side of the front cover. This allows the life preserver to be opened when
inflated, and easily folded when deflated. When inflating, the Velcro
®
fasteners burst open allowing the inflation cell to expand out of the cell
enclosure.
5. Belt
A durable nylon waist belt is attached to the life preserver. This belt is
fastened and fitted using a quick-release buckle and waist belt adjuster.
To tighten the belt, pull the extra webbing from the waist belt adjuster, as
shown in Figure 5. After adjusting the fit, the excess webbing is led through
a belt loop to keep it out of the way.
6. Markings
The life preserver is marked with indelible stencil and all markings appear
in both English and French. The life preserver is marked with donning
instructions, which are located on the left back cover. The donning instruc-
tions are printed clearly enough to be read even in dimly lit surroundings.
3 4
a) Starting from the end farthest from the oral valve, tightly roll
up the life preserver.
b) Depress the oral valve to release the trapped air.
Figure 1: Deflating the buoyancy cell
PA3007_MD1127_23Apr99 3/13/06 9:48 AM Page 6