Click here to make tpub.com your Home Page

Page Title: Piercing pin and lever
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 




img
MIL-I-23145B
The inflation assembly, when inspected as specified in
3.4.3.1 At 40 psig
4.6.5.1, shall show no evidence of leakage.  This inspection shall be conducted in
sequence with 3.4.3.2.  Upon completion of this inspection, the inflation assembly
shall be inspected for conformance to leakage at 2 psig, 3.4.3.2.
3.4.3.2 At 2 psig.  The inflation assembly, when inspected as specified in
4.6.5.2, shall show no evidence of leakage. In addition, the inflation assembly
shall not show any evidence of material or mechanical failure.
3.4.4 Operating force.  The inflation assemblies, when inspected as specified in
4.6.6 without the carbon dioxide filled cylinder, shall require a load of not more
than 2.0 pounds for effective operation.  The assembly shall not be safety wired,
The lever shall travel through one normal cycle.  The piercing pin shall move in a
straight line, shall not waver from side to side, shall advance to its maximum point
of travel, and shall retract to its original position.
3.4.5 Piercing pin and lever.
3.4.5.1 Position and travel.  The piercing pin, when inspected as specified in
4.6.7, shall perform as specified herein.  The normal position of the piercing pin
point for the type I and type III assembly shall be as specified in 3.3.4.1.
The point of the piercing pin shall travel 0.100 to 0.130 inch beyond the surface of
the metal seat of the body.  The normal position of the piercing pin point for the
type 11 assembly shall be as specified in 3.3,4.2.  The point of the piercing pin
shall travel 0.090 to 0.120 inch beyond the surface of the seat seal gasket. In
both cases, the piercing pin point shall be capable of puncturing the carbon dioxide
filled cylinder.  The lever shall travel through an arc not greater than 115 degrees
in line with the longitudinal axis of the body.  The piercing pin shall move in a
straight line, shall not waver from side to side, and shall retract to its original
position.
3.4.5.2 Dimensions of piercing pin and lever.  The dimensions of the piercing
pins for the types I and 111 and type II inflation assemblies, when inspected as
specified in 4.6.1 and table II, shall conform to figure 3 and figure 7, respective-
ly.  The dimensions for the types I and III and type 11 levers shall conform to
figures 1 and 4, respectively.
3.4.6 Operation.  The inflation assembly, when inspected as specified in 4.6.8,
shall not permit the piercing pin to make any contact with the sealing cap area of
the cylinder prior to activation of the lever.  The cylinder shall not be punctured
nor shall indentation be made.  The lever shall not be safety wired.  Upon activation
of the lever, the piercing pin shall completely operate, and shall advance to its
maximum point of travel.  The piercing pin shall pierce the center of the punctu-
rable area of the installed carbon dioxide cylinder.  The piercing pin shall not
stick in the cylinder but shall retract to its original position.  The gas in the
cylinder shall be released into the atmosphere immediately upon activation and shall
not be restricted in any manner.  The piercing pin shall not obstruct or retard the
flow of carbon dioxide gas in any way, and the gas shall not pass through any part
of the inflation assembly into the atmosphere other than through the passages in the
outlet.
3.4.7 Hydrostatic pressure.  The life preserver inflation assembly, when in-
spected as specified in 4.6.9, shall not deform or leak.  The internal hydrostatic
pressure applied shall be 1500 psig.
6

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business