1、MIL-I-23145B 15 Januarv 1982 SUPERSEDING MIL-I-23145A(AS) 3 November 1967 MILITARY SPECIFICATION INFLATION ASSEMBLIESs LIFE PRESERVER This specification is approved for use by all Departments and Agencies of the Department of Defenje. 1. SCOPE 1.1 Scope. This specification covers the requirements fo
2、r three types of life preserver inflation assemblies and three different styles of lanyards. 1.2 Classification. The life preserver inflation assemblies and lanyards shall be of the following types and styles, as specified (see 6.2.1): Lanyard style Application I 1 MIL-C-601 cylinders. II III 1, 2 o
3、r 3 1 or 3 MIL-C-25369, type II or III cylinders. Dual inflator, MIL-C-601, type I or II cylinders. 2. APPLICABLE DOCUMENTS 2.1 Issue of documents. The following documents of the issue in effect on date of invitation for bids or request for proposal, form apart of this specification to the extent sp
4、ecified herein. SPECIFICATIONS FEDERAL L-P-349 - Plastic Molding and Extrusion Ifaterial, Cellulose Acetate Butyrate. BB-C- 1 O 1 - Carbon Dioxide (COZ) Technical and USP. QQ-A-591 - Aluminum Alloy Die Castings. QQ-P-4 16 - Plating, Cadmium (Electrodeposited). Beneficial comments (recommendations, a
5、dditions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Engineering Specifications and Standards Department (Code 93), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improve- ment Prop
6、osal (DD Fom.1426) appearing at the end of this document or by letter. Licensed by Information Handling ServicesQQ-S-763 QQ-W-4 2 3 PPP-B-566 PPP-B- 6 3 6 PPP-B-676 PPP-c-843 PPP-T-45 MILITARY MIL-P- 1 16 MIL-C-601 MIL-C-5040 MIL-R-6855. MIL-1-6869 MIL-A-8625 NIL-S-8660 MIL-P- 19834 MIL-C-25369 STAN
7、DARDS FEDERAL FED-STD- 15 1 FED-STD-HZ8 MILITARY MIL-STD- MIL-STD- 12 9 MIL-STD- 130 - Steel Bars, Shapes and Forgings, Corrosion Resisting. - Wire, Steel, Corrosion-Resisting. - Boxes, Folding, Paperboard. - Boxes, Shipping, Fiberboard. - Boxes, Set-up. - Cushioning Material, Cellulosic. - Tape, Gu
8、mmed, Paper, Reinforced and Plain, for Sealing and Securing. - Preservation-Packaging, Methods of. - Cylinders, Carbon Dioxide Filled, Technical. - Cord, Nylon. - Rubber, Synthetic, Sheets, Strips, Molded or Extruded Shapes. - Impregnates for Aluminurn Alloy and Magnesium Alloy Castings. - Anodic Co
9、atings, for Aluminum and Aluminum Alloys. - Silicone Compound. - Plates, Identification, Metal Foil, Adhesive Backed. - Cylinder, Carbon Dioxide, for Inflation of Pneumatic Life Preservers. - Metals, Test Methods. - Screw Thread Standards for Federal Services. - Sampling Procedures and Tables for In
10、spection by - Marking for Shipment and Storage. - 1dentification.Markf.ng of U.S. Military Property. Attributes. AIR FORCE - NAVY AERONAUTICAL AN6227 Packing; “O“ Ring Hydraulic DRAWINGS NAVAL AIR SYSTEMS COMMAND 62A120Hl - Manifold Stem Assembly and Details, for Life Preservers. 975AS121 - Handle,
11、Beaded, Inflation, Life Preserver. (Copies of specifications, standards, drawings, and publications required by con- tractors in connection with specific acquisition functions should be obtained from the acquiring activity or as directed by the contracting officer.) 2 .+- Licensed by Information Han
12、dling ServicesMIL-I-23145B 2.2 Other publications. The following document forms a part of this specifi- cation to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. UNIFORM CLASSIFICATION COMMITTEE, AGENT U
13、niform Freight Classification Rules (Application for copies should be addressed to the Uniform Classification Com- mittee, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.) (Technical society and technical association specifications and standards are generally available for reference from li
14、braries. They are also distributed among technical groups and using Federal Agencies.) 3. REQUIREMENTS 3.1 First article. When specified (see 6.2.1) the contractor shall furnish sample units for first article inspection and approval (see 4.3 and 6.3). 3.2 Materials and components. Materials and comp
15、onents shall conform to the applicable specifications and drawings as listed or required herein. Unless other- wise specified, the manufacturer shall certify that the materials and components, except for the metallic parts used in the construction of the life preserver in- flation assemblies, shall
16、have been manufactured not more than 18 months prior to the date of delivery of the inflation asserrblies (see 6.2.2). 3.3 Design and construction. The design and construction of the life preserver inflation assemblies shall be in accordance with figures 1 through 10, as applicable, and applicable d
17、rawings. 3.3.1 General design requirements. The life preserver inflation assemblies shall be designed.to be compatible with the manifold stem assemblies conforming to Drawing 62A120H1. The inflation assemblies shall consist of a body, with a seat seal gasket (for use with the designated carbon dioxi
18、de filled cylinder), two. manifold stem gaskets, an internal retractable piercing pin, having an “O” ring and a spring. The assemblies shall also be.provided with an outlet having two gas passages, an external actuating lever and a lanyard assembly used for activation of the inflation as.: sembly. -
19、The opening in the body shall contain a chamfered portion and shall be designed to permit the top area of the carbon dioxide filled cylinder to seat firm-ly against the metal seat of the body. The metal seat shall b.e smooth, flat and perpendicular to the threads. When not in operation, the lever of
20、 the inflation assembly shall rest firmly against the side of the inflation assembly body as shown in figures 1 and 4. 3.3.2 Specific design and construction requirements. 3.3.2.1 Inflation assembly body. The inflation assembly body shall be con- structed with a high pressure aluminum die casting co
21、nforming to QQ-A-591, alloy A380. The body shall be anodized in accordance with MIL-A-8625, type II, class 1 and then impregnated in accordance with MIL-1-6869. The body shall have two gas passages and an outlet for mounting on the manifold stem assemblies conforming to Drawing 62A120H1. One of the
22、gas passages in the outlet shall be aligned with the opening in the side of the manifold stem. Each inflation body shall be threaded 3 :. t Licensed by Information Handling Serviceswith cold rolled internal threads as specified in figures 1 and 4. The threads shall be lightly coated with silicone gr
23、ease conforming to MIL-S-8660. 3.3.2.2 Gaskets. All gaskets shall be fabricated from synthetic rubber conforming to MIL-R-6855, class 2, grade 80 (type optional). 3.3.2.2.1 Manifold stem gasket. The manifold stem shall be provided with two gas- kets, one each for the top and bottom of the manifold s
24、tem. The top gasket shall be positioned between the body outlet and the cap nut conforming to Drawing 62A120H1-9. The bottom gasket shall be positioned between the body outlet and the manifold stem conforming to Drawings 62A120H1-1 or 62A120H1-2, as applicable. The location and dimensional requireme
25、nts for the top and bottom gaskets shall be as specified in figure 10. 3.3.2.2.2 Seat seal gasket. The seat seal gasket shall be positioned on the metal seat of the body. The top area of the carbon dioxide filled cylinder shall seat firmly against the upper surface of the seat seal gasket. The seat
26、seal gaskets shall conform to figures 1 or 4, as applicable. 3.3.3 Screw threads. The screw threads shall conform to FED-STD-H28 and the requirements specified in figures 1 through 5. 3.3.4 Piercing pins. The piercing pins shall be fabricated with hardened steel, cadmium plated in accordance with QQ
27、-P-416, type II, class 2. The pins shall have a smooth machine finish, free from tool or chatter marks. They shall be constructed to move in a straight line when activated and shall not waver from side to side. Upon activation, the pins shall retract to their original position. The detail con- cable
28、. .struction of the piercing pins shall be as specified in figures 3 and 7, as appli- 3.3.4.1 Piercing pin point (for type I and type III). The point of the piercing pin for the type I and type III inflation assemblies shall have four flats. The normal position of the point shall be a minimum of 0.0
29、05 inch below the surface of the metal seat of the body. 3.3.4.2 Piercing pin point (for type II). The point of the piercing pin for the type II inflation assemblies shall have four flats. The normal position of the point shall be a-minimum of 0.10 inch below the surface of the metal seat of the bod
30、y. 3.3.4.3 Packing, “O“ ring. The top portion of the piercing pin shall contain an “O“ ring conforming to AN6227-1 which shall be installed as shown in figures 1 and 4. 3.3.4.4 Spring. The piercing pin shall be supported by a corrosion resistant spring fabricated from wire conforming to QQ-W-423, fo
31、rm I, composition 302, con- dition B. The diameter of the wire shall be 0.028 inch. .The spring shall be posi- tioned around the piercing pin as shown in figures 1 and 4. The ends of the spring shall be squared and ground. 3.3.5 Lever. The lever shall be fabricated from hardened steel having a case
32、depth of- 0.010. The steel shall be cadmium plated in accordance with QQ-P-416, type 11, class 2. The lever shall be securely held in position by a grooved taper pin as specified in figures 1 and 4. .men not in operation, the lever shall rest against the inflation as.sembly body. 4 Licensed by Infor
33、mation Handling Services3.3.5.1 Grooved taper pin. The grooved taper pin shall be fabricated from corrosion resistant steel conforming to QQ-S-763, class 302, condition A and shall conform to figure 6. 3.3.6 Lanyard assemblies. 3.3.6.1 Style 1 and 2 lanyard assemblies. The style 1 and 2 lanyard asse
34、mblies shall consist of a continuous length of-braded nylon cord conforming to MIL-12-5040, type I (color optional), a plastic knob, and two or three commercial grade brass clips, as required. The knob shall be fabricated from plastic material conforming to L-P-349, grade H, class optional, black in
35、 color. The -knob shall be constructed as shown in figure 2. The cord shall be looped through the hole at the end of the lever so that equal lengths extend on each side. The clips shall be 0.023 2 0.003 inch in thickness and 3/8 2 1/32 inch in length. 3.3.6.1.1 Style 1. The style 1 lanyard assembly
36、shall be as specified in 3.3.6.1. In addition, the two free ends of the cord shall be inserted through the holes in the knob, one end through each hole and shall be tied securely together with a sheet bend knot. Two brass clips, as specified in 3.3.6.1, shall be crimped around the looped cord, one a
37、djacent to the knob and the other adjacent to the lever, to hold the looped cord together. The assembled style 1 lanyard shall con- form to figure 2. 3.3.6.1.2 Style 2. The style 2 lanyard shall be as specified in 3.3.6.1. In addition, the style 2 lanyard assembly shall contain a nylon release pin a
38、nd three brass clips as specified in 3.3.6.1. The release pin shall be fabricated from nylon and shall conform to figure 6. The nylon cord shall be threaded through the hole in the lever. One end of the specified nylon cord, extending from the lever, shall be adjusted to the desired length as specif
39、ied in figure 6. The longer end of the cord-, shall then be threaded through one hole in the knob (see figure 6) looped through the second hole in the knob, and subsequently looped through the eye of the release pin as shown infigure 6. The free ends of the cord shall then be inserted through the ho
40、les in the knob, respectively, and securely tied together with a sheet bend knot. The cut ends of the cord shall be seared and no sharp edges shall be formed. The three brass clips shall. be crimped around the looped cord, one adjacent to the lever, one adjacent to the release pin, and one adjacent
41、to the knob to hold the looped cord together. The configuration for the sty1.e 2 lanyard assembly shall conform in its entirety to figure 6. 3.3.6.2 Style 3 lanyard assemblies. The style 3 lanyard assemblies shall be as specified in Drawing 975AS121. 3.4 Performance characteristics. 3.4.1 Rockwell h
42、ardness. The piercing pin and lever, when inspected as specified in 4.6.2, shall have a core Rockwell hardness of C30 to C35. 3.4.2 Weight. The weight of the inflation assemblies, when inspected as specified in 4.6.4, shall not exceed 40 grams for the type I assembly, 55 grams for the type II assemb
43、ly and 60 grams for the type III assembly. 3.4.3 Leakage. 5 o Licensed by Information Handling ServicesMIL-I-23145B 42 W 7777706 0232553 7 W MIL-I-23145B 3.4.3.1 At 40 psig. The inflation assembly, when ifi.spected as specified in 4.6.5.1, shall show no evidence of leakage. This inspection shall be
44、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 infl
45、ation 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 shal
46、l 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 trav
47、el. The piercing pin, when inspected as specified in 4.6.7, shall perform as specified hern. 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 m
48、etal seat of the body. The normal position of the piercing pin point for the type II 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 punctur
49、ing 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 III 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 II lever
