1、AMSC N/A FSC 4720 MIL-PRF-26385G 24 September 013 SUPERSEDING MIL-PRF-26385F 16 March 1998 PERFORMANCE SPECIFICATION HOSE, OXYGEN AND PRESSURIZATION, OZONE RESISTANT This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specific
2、ation covers ozone resistant hoses for use with pressurizing and oxygen breathing systems. 1.2 Size. This specification covers hoses conforming to the internal diameters and lengths identified in the table on figure 1 (see 6.2 and 6.12). 1.3 Part or Identifying Number (PIN). The PINs to be used for
3、the hose acquired to this specification are created as follows (see figure 1). M26385 dash numbers supersede MS27797 dash numbers. M 26385 -XX -XXX Dash number, length (L) Dash number, diameter (D) Specification number Prefix for military specification Comments, suggestions, or questions on this doc
4、ument should be addressed to Oklahoma City Air Logistics Center/ENSDAA, 3001 Staff Drive, Tinker AFB, OK 73145 or emailed to af71tinker.af.mil. Since contact information can change, you may want to verify the currency or this address information using the ASSIST Online database at https:/assist.dla.
5、mil. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26385G 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include docum
6、ents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of the documents cited in sections 3, 4,
7、or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited
8、 in the solicitation or contract. FEDERAL SPECIFICATIONS BB-A-1034 - Compressed Air, Breathing FEDERAL STANDARDS FED-STD-191 - Textile Test Methods FED-STD-595/34079 - Lusterless Green COMMERCIAL ITEM DESCRIPTIONS A-A-59503 - Nitrogen, Technical DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-27210 - O
9、xygen, Aviators Breathing, Liquid and Gas DEPARTMENT OF DEFENSE STANDARDS AN807 - Adapter, Straight, Tube To Hose (Copies of these documents are available online at http:/quicksearch.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094
10、.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AEROSPACE INDUSTRIES ASSOCIATION of AMERICA, INC. (AIA) Provided by IHSN
11、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26385G 3 NAS397 - Clamp - Ratchet, One Piece (NA/NAS documents may be obtained online at www.aia-aerospace.org/ or from Aerospace Industries Association 1000 Wilson Boulevard, Suite 1700 Arlington, VA 22209-392
12、8.) SAE INTERNATIONAL SAE-AS1065 - Quality after each coiling and uncoiling the hose shall be turned 90 clockwise about its longitudinal axis. The hose shall have no permanent set. 4.6.6 Elongation. The hose shall be suspended by one end, vertically, and a 60 pound pull shall be applied for 10 minut
13、es. The length shall increase no more than 16% of the hose length. Two minutes after removal of the force, the hose shall have no permanent set in excess of 2% of the hose length. 4.6.7 Static load. A static load of 225 pounds shall be applied to a 4 inch section of the reinforced portion of the hos
14、e, and this force shall be normal to the longitudinal axis. With the load applied, the outside diameter shall not reduce more than 10 percent. Two minutes after the load is removed, the reduction of the outside diameter shall be no more than 5 percent. 4.6.8 Flexibility endurance. The hose shall be
15、coiled and uncoiled around a 1.5 inch diameter rod 500 times. The hose shall then be twisted 180 in both directions about its longitudinal axis 500 times in each direction. The hose shall then be subjected to the leakage and delamination tests. 4.6.9 Abrasion. Two samples of the hose shall be subjec
16、ted to the test in FED-STD-191, Method 5308, dry conditions. A minimum force of 1 pound shall be maintained between the abradant and hose throughout the test. The reinforced sections of the hose shall withstand 10,000 cycles of abrasion without exposing the reinforced wire (see 6.11). 4.6.10 Odor. O
17、xygen conforming to MIL-PRF-27210 shall be flowed through the hose at 10 liters per minute for 2 minutes and then tested for odor in accordance with SAE-AS1065. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26385G 8 4.6.11 Low temperature.
18、The hose shall be subjected to -65 5F for 48 hours. After this period and while still at this temperature, the hose shall be subjected to the flexibility test. After returning to room temperature, the hose shall be subjected to the leakage, delamination, and odor tests. 4.6.12 High temperature. The
19、hose shall be subjected to 160 5F for 48 hours. While still at 160F, the hose shall be subjected to the flexibility test. After returning to room temperature, the hose shall be subjected to the leakage, delamination, and odor tests. 4.6.13 Ozone resistance. Samples of the end cover, inner liner, and
20、 elastomer materials shall be tested in accordance with ASTM-D1149 (see 6.3). The test samples shall be elongated 20%, placed in an ozone free atmosphere for 24 hours, and then subjected to an ozone environment. The temperature shall be 100 5F, the ozone concentration shall be 120 10 parts per milli
21、on by volume, and the air velocity across the sample shall be at least 2 feet per second. The material shall be exposed to these conditions for 60 minutes. The test slabs shall be examined under 10X magnification for evidence of damage such as blooming, checking, or cracking. 4.6.14 Age. The age of
22、the hose shall be verified to be no more than 12 months from cure date to the acceptance date in accordance with SAE-AS1933. 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When actual packaging of materiel is
23、 to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency,
24、or within the military services system commands. Packaging data retrieval is available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general o
25、r explanatory nature which may be helpful, but is not mandatory.) 6.1 Intended use. The hoses covered by this specification are intended for use with aircraft oxygen and pressurizing systems. The hoses supply air or oxygen for breathing or pressurizing purposes when used with altitude suits, anti-G
26、suits, and ejection seat or escape capsule equipment. 6.2 Acquisition requirements. Acquisition documents must specify the following: a. Title, number, and date of this specification. b. Size (see 1.2). c. When first article is required (see 3.1). Provided by IHSNot for ResaleNo reproduction or netw
27、orking permitted without license from IHS-,-,-MIL-PRF-26385G 9 d. Item identification (see 3.5.15 items a, c, and d). e. The requirement for the vendor to identify proposed cleaning and verification methods (see 4.6.4). f. Packaging requirements (see 5.1). g. Data required. 6.3 Materials. Previously
28、, material certification sheets were used to validate contractors material selection. 6.4 Hose reinforcement. Previous hoses used an integral corrosion resistant wire conforming to ASTM-A313/A313M. 6.5 Outer covering. Previous hoses used outer coverings made from tubular polyamide or polyester mater
29、ial of knitted or braided construction. 6.6 Permanent set. A permanent set is defined as a permanent change in the physical shape of the hose after all forces have been removed. 6.7 Sampling inspection. In previous acquisitions, hoses offered for delivery at one time were considered a lot, and rando
30、m samples were selected from each lot in accordance with inspection level S-2, ASQ Z1.4). 6.8 Leakage. Previously, hoses were tested by horizontally submerging them in water while internally pressurized. 6.9 Delamination testing. Previously, the delamination test used an end cap with a viewing windo
31、w at one end and a vacuum source with a light at the other end. While under a vacuum, the interior of the hose was examined for evidence of delamination 6.10 Cleaning. See MIL-STD-1330 and SAE-ARP-1176 for guidance on proven cleaning methods and verifications. Visible inspections are typically condu
32、cted using white light and ultraviolet light to detect particulates and some types of hydrocarbons. The non-volatile residue (NVR) test in SAE-ARP-1176 may be used to baseline the hydrocarbon verification at an acceptable contamination level, however, other cleaning and verification methods that do
33、not contain class I and II ODC solvents should be used for production. 6.11 Abrasion test. Previous procurements used a Schiefer machine modified to retain a 2-inch section of hose. 6.12 Superseding data. Superseded dash numbers are listed in the table on figure 1. 6.13 Subject term (key word) listi
34、ng. altitude suit anti-G suit ejection seat Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26385G 10 escape capsule M26385 dash number (Note 3) D .031 (Inches) L + 5%, - 0% (Inches) Superseding MS27797 dash number -2 0.125 - - -4 0.250 - - -
35、6 0.375 - - -6-052 0.375 5.2 -6-052 -6-060 0.375 6.0 -6-060 -6-140 0.375 14.0 -6-140 -6-214 0.375 21.4 -6-214 -8 0.500 - - -10 0.625 - - -10-080 0.625 8.0 -10-080 -10-085 0.625 8.5 -10-085 -10-115 0.625 11.5 -10-115 -10-120 0.625 12.0 -10-120 -10-180 0.625 18.0 -10-180 -10-200 0.625 20.0 -10-200 -10
36、-240 0.625 24.0 -10-240 -12 0.750 - - Notes: 1. Dimensions are in inches. 2. Tolerances are as specified. 3. First dash number is inside diameter and the second dash number is length. If second dash number is not listed, length can be specified in other than standard lengths. 4. Drawing is not to sc
37、ale. 5. End notes and dimensions apply to both ends. FIGURE 1. Hose. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26385G 11 Notes: 1. Hose size determined by the table on figure 1. 2. Drawing is not to scale. FIGURE 2. Hose end detail A. P
38、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26385G 12 6.14 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Custodians: P
39、reparing Activity: Army - AT Air Force - 71 Air Force - 71 Review activities: (Project 4720-2013-010) Air Force - 11 DLA - CC NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
