1、MILIT. M IL-H-22343A(AS) 16 January 1968 SUPERSEDING MIL-H- 22343(Wep) 5 February 1960 RY SPECIFICATIO HOSE ASSEMBLES, METAL, LIQUID OXYGEN This specification has been approved by the Naval Air Systems Command. 1. SCOPE 1.1 This specification covers metal hose assemblies suitable for use with liquid
2、 oxygen. 2. APPLICABLE DOCUMENTS 2.1 The following specifications, standards, drawings and publications form a part of this specification, Unless otherwise specified, the issue in effect on date of invitation for bids shall apply. SPECIFICATIONS Federal 0-T-236 0-T-634 BB-A-1034 BB- N-4 11 Military
3、MIL-P- i16 MIL-B-5087 MIL-E-5272 Tetra.chloroethy1e ne (Perchloroethylene) , Technical Grade Trichloroethylene, Technical Air, Compressed, For Breathing Purposes Nitrogen, Technical Preservation, Methods of Bonding, Electrical, and Lighting Protection, for Aerospace Systems Environmental Testing, Ae
4、ronautical and Associated Equipment, General Specification for Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-223Ll3A Lb W 977770b OL72LOb 4 W Military (Continued) MIL-0-27210 STANDARDS Military MILSTD-105 MIL- STD- 129 MIL-STD-130 MIL-STD- 79
5、4 MS1247 MS33586 MS90457 Oxygen, Aviators Breathing, Liquid and Gas Sampling Prbcedures and Tables for Inspection by AttriWtes Markhg for Shipment and Storage Identification Marking of U. S. Military Property Parts and Equipment, Procedures for Packaging and Packing of identification of Pipe, Hose,
6、and Tube Lines for Aircraft; Missile, and Space Systems Metals, Definition of Dissimilar Hose Aseemblies, Metal, Liquid Oxygen wen requesting any of the applicable documents, refer to both title and number. All requests should be made via the cognizant Government quality control representative. Copi
7、es of this specification and other unclassified specifications and drawings required by contractors in connection with specific procurement functions should be obtained upon application to the Commanding Officer, Naval Supply Depot (Code 1051), 5801 Tabor Avenue, Philadelphia, Pennsylvania 19120. Al
8、l other docu- ments should be obtained from the procuring activity or as directed by the contracting officer. ) 3. REQUIREMENTS 3.1 Preproduction - The hose assembly furnished under this spec- ification shall be a product which has been inspected, and passed the preproduction in- spections specified
9、 herein. 3.2 Materials - Mafihials shall conform to applicable speci- fications and shall be as specified herein Snd on applicable drawings. Materials which are not covered by specifications, or which are not specifically described here- in, shall be of the best quality, of the lightest practicable
10、weight, and suitable for the purpose intended. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-22343A Lb 77777Ob OL72LO b I 3.2.1 Metal parts - All metal parts shall be of a corrosion resistant material or treated in a manner to render them a
11、dequately resistant to corrosion. 3.2.1.1 Dissimilar metals - Unless suitably protected against electrolytic corrosion, dissimilar metals shall not be used in intimate contact with each other. Dissimilar metals are defined in MS33586. 3.2.2 Protective treatment - When materials are used in the const
12、ruction of the hose assemblies that are subject to deterioration when exposed to environmental conditions likely to occur during service usage, they shall be pro- tected against such deterioration in a manner that will in no way prevent compliance With the performance requirements of this specificat
13、ion. Protective coating which might crack, chip, or scale during normal service life or under extremes of environ- mental conditions shall not be used. 3.2.3 where they suit the purpose. They shall be identified on the manufacturers drawings by their part numbers. standards, or which are not specifi
14、cally described herein or on the drawings, shall be completely described on manufacturers drawings. Standard parts - MS and AN standard parts shall be used Parts which are not covered by specifications or military 3.3 Design and construction - The design and construction of the hose assembly shall b
15、e in accordance with MS90457 and the part number specified in the contract or order (see 6.2). 3.4 Performance - 3.4.1 Proof pressure - The hose assembly, when tested as specified in 4.6.2, shall not show any evidence of leakage 2 minutes after pressure has been applied. 3.4.2 Flexibility - The hose
16、, when tested as specified in 4.6.3, shall not show any evidence of damage or leakage. 3.4.3 Obstruction test - The hose assembly, when tested as specified in 4.6.4, shall permit the ball to pass through the hose assembly without friction due to any foreign obstruction. 3.4.4 Endurance - The hose as
17、sembly, when tested as specified in 4.6.5, shall not show any evidence of damage. 3.4.5 Vibration - The hose assembly, when tested as specified in 4.6.6, shall not show any evidence of material failure. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
18、-,-MIL-H-22343A Lb = 7779706 0392308 3.4.6 specified in 4.6.7, shall not show any evidence of damage at any pressure below the following pressures: Bust pressure - The hose assembly, when tested as Hose Size Burst Pressure, psi -4 -5 -6 -8 4500 3500 3500 3500 3.4.7 Disassembly and esaminotion - The
19、hose assembly, when tested as specified in 4.6.8, shall not show excessive evidence of deterioration or wear due to testing which might affect the hose assembly performance. 3.5 Interchangeability - All parts having the same manu- facturers part number shall be functionally and dimensionally interch
20、angeable. 3.6 Cleaning procedure - To remove oil and grease from the hose assembly, the following cleaning method shall be used: 3.6.1 Degreasing - Ail internal parts of the hose assembly shall be degreased using a vapor phase degreaser in accordance with 0-T-236 or 0-T-634. Ultrasonics may be used
21、in conjunction with vapor phase degreasing for the cleaning of components. After completion of the cleaning and when assembled, General Electric Type H Leak Detector or equivalent Halide testing apparatus shall be used to determine the absence of the cleaning compound. 3.6.2 Purging - The hose assem
22、bly shall be purged with hot dry oxygen, conforming to MIL-0-27210, type I or hot, dry, water-pumped nitrogen, conforming to BB-N-411, type I, class I, grade E. The temperature at the inlet to the system -shall not exceed 250“ F during purging. 3.7 Identification of product - The hose assembly shall
23、 be permanently marked for identification in accordance wi:h MIL-STD-130 except that the Federal Stock Number shall be omitter! from the nameplate. The hose shall also be marked in accordance with MS1247 and bonded in accordance with MIL-E-5087. 3.8 Workmanship - The hose assembly shall be uniform i
24、n quality and shall be free from irregularities, defects, or foreign matter which could adversely affect safety, performance, reliability, or durability. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5 MIL-H-223Ll3A Lb W 779990b 0392309 T W ._ 4.
25、 QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection - Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of ail inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own faciliti
26、es or any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Classification of inspe
27、ction - The examination and testing of the hose assemblies shall be classified as follows: a. Preproduction inspection - Preproduction inspections consist of examinations and tests performed on samples which are representative of the production item after award of a contract to determine that the pr
28、oduction item meets the requirements of this specification, b. Quality conformance inspection - Quality conformance inspection consists of examinations and tests performed on individual products or lots to determine conformance of the products or lots with the requirements set forth in this specific
29、ation. 4.3 Preproduction inspection - Preproduction inspection shall consist of all the examinations and tests of this specification. 4.3.1 Preproduction samples - Unless otherwise specified, as soon as practicable after the award of the contract or order, the manufacturer shall submit four 18-inch
30、length hose assemblies of each size for which preproduction in- spection is required. The samples shall be representative of the construction, work- manship, and materials to be used during production. When a manufacturer is in continuous production of these units from contract to contract, submissi
31、on of further preproduction samples on the new contract may be waived at the discretion of the procuring activity. Approval of the preproduction samples or the waiving of the preproduction inspection does not preclude the requirements of submitting to the quality conformance inspection. The preprodu
32、ction samples shall be forwarded to the Supply Officer, Naval Air Engineering Center, Philadelphia, Pennsylvania 19112, Attention: Director, Aerospace Crew Equipment Laboratory; or a laboratory desig- nated by the procuring activity (see 6.2). The samples shall be plainly identified by securely atta
33、ched durable tags marked with the following information: Samples submitted by (name) (date) for preproduction in- spection in accordance with the requirements of MIL-H- 22343A(AS) under contract no. c) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
34、4.3.1.1 Upon completion of the preproduction inspection, all the applicable inspection reports and when applicable, recommendations and comments quality control representative. The samples shall be consumed or destroyed in the preproduction inspection and shall not be considered as part of the quant
35、ity to be de- livered under contract. . pertinent for use in monitoring production shall be forwarded to the Government 4.4 Quality conformance inspection - Quality conformance inspection shall consist of the following examinations and tests: Visual examination Dimens ions Proof pressure Flexibility
36、 (room temperature) Obstruction test Preparation for delivery 4.4.1 Sampling - 4.4.1.1 Inspection lot - 4.4.1.1.1 Hose assembly - Aii inspection lot size shall be expressed in units of hose assemblies, of one size, made under essentially the same conditions and from the same materials and components
37、. The sample unit shall be one hose assembly. 4.4.1.1.2 Preparation for delivery - An inspection lot size shall be expressed in units of one fully prepared shipping container, containing hose assemblies of one size, fully prepared for delivery and made from essentially the same materials and compone
38、nts. The sample unit shall be one shipping container, containing hose assemblies of one size, fully prepared for delivery with the exception that it need not be sealed. 4.4.1.2 Sampling for tests.-and examinations of hose assemblies - The sample size, acceptance criteria, tests, and examinations req
39、uired for the hose assemblies shall be as specified in Table I. 4.5 ?est c.onditions - 4.5.1 Temperature aB.ressure - Unless otherwise specified, tests shall be conducted at local ambient tmwrature and barometric pressure. The temperature and barometric pressure shall of improper size, location, seq
40、uence; or method of application; markings not the same on the interior and exterior con- tainers. Any non-conforming component; any com- ponent missing, damaged, or otherwise defective, Improper preservation, packaging or packing. Inadequate application of the components such as incomplete closure o
41、f the unit package, intermediate package, case liners, container flaps, loose strappings, etc. ; bulging or distortion of the con- tainers. Number per container is more or less than required; gross or net weight exceeds the requirements; more than one size in the same container. 9 Provided by IHSNot
42、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.6.3 Fiedbility - The hose shall be subjected to the following . flexibility tests and shall pass the requirements specified in 3.4.2. 4.6.3.1 Room temperature - The hose shall be coiled around a mandrel with a radius a
43、s follows: L Bend Radius Hose Size (Inside of Bend) -4 -5 -6 -8 2“ 3 4 2-1/21 The coil shail be rolled the entire length of the hose. The bend shall then be re- versed and returned to the straight position, This cycle shall be conducted a total of 5 times allowing at least 4 seconds per cycle. The h
44、ose assembly shall then be subjected to and pass the test specified in 4.6.2. 4.6.3.2 High temperature - The hose shall be conditioned at 160 +5F for 3 hours. After the conditioning period and while still at this temperature, the hose shall be subjected to the test specified in 46.3.1. 4.6.4 Obstruc
45、tion test - A steel ball, of a diameter as specified below, shall be dropped through the internal passage of the hose assembly. The assembly shall pass the requirements specified in 3.4.3. Hose Size Ball Size (inches) -4 -5 -6 -8 .146 .208 .267 .382 4.6.5 Endurar e - The hose shall be subjected to t
46、he test spec- ified in 4.6.3.1, except that 250 cycles of flexibility shall be conducted at room tem- perature, and 250 cycles at -297 +5“F. The hose assembly shall pass the require- ments specified in 3.4.4, The hose assembly shall then be subjected to and pass the test specified in 4.6.2. 4.6.6 Vi
47、bration - The hose assembly shall be bent 180 degrees to a radius specified in 4.6.3.1 and installed on a suitable vibration machine. The bend shall be in the plane of vibration. One end of the assembly shall be fixed and the other end shall be subjected to the vibration test specified in MIL-E-5272
48、, Procedure XII, The hose assembly shall pass the requirements specified in 3.4.5. The hose assembly shall then be subjected to and pass the test specified in 4.6.2. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-22343A(AS) 4.6.7 Burst pressur
49、e - The hose assembly shall be subjected to a hydrostatic pressure with a rate of pressura rise equal to 200,000 55,000 psi/min. Sufficient pressure shall be applied to burst the hose assembly. The hose assembly shall be observed throughout the test and the type of failure and the pressure required for failure shall be recorded. The hose assembly shall pass the requirements spec- ified in 3.4.6. 4.6.8 Disassembly ancl examination -
