1、- J MIL-H-22240F Li? W 777790b 04b35LO W MIL-H-22240F(SH). - SUPERSEDING MIL-H-22240E(SH) % 22 March 1988 . 21 April 1982 I MILITARY SPECIFICATION HOSE, RUBBER, PETROLEUM BASED FUELS AND WATER SERVICES, DISCHARGE ONLY, SMOOTH BORE, LIGHTWEICHT BUOYANT TYPE This specificatton is approved for use by t
2、he Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE i l 1.1 Scope. This specification covers lightweight, smooth bore, petroleum based fuels and water service discharge rubber hoses. I 1.2 Classificatio
3、n. 1.2.1 Hose designation. Hose covered by this specification shall be designated in the following form (see 6.2.1). Military specification code number I Hose size code number (see 1.2.1.1) Hose type identification code letter (see 1.2.1.2) 1.2.1,l Hose size. The hose size (inside diameter) is ident
4、ified by two digits : Size code number Inside diameter (inches) 25 40 60 70 2-1/2 4 6 7 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, Code 5523, Departmen
5、t of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 4720 DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited Y Provided by IHSNot fo
6、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-22240F(SH) I 1.2.1.2 Hose type. Hose type is identified by a single capital letter. Type code letter Type Sizes A B C Alongside fueling 40, 60, and 70 Astern fueling 60 only Alongside fueling or water transfer 25 1.3
7、Water services include both boiler feed water and potable water. 2. APPLICABLE DOCUMENTS 2.1 Government documents . 2.1.1 Specifications and standards. Unless otherwise specified, the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Speci
8、fications and Standards (DoDLSS) specified in the solicitation form a part of this specification t the extent specified herein. .- SPECIFICATIONS FEDERAL TT-S-735 - Standard Test Fluids, Hydrocarbon. MIL I TARY MIL-P-775 - Packaging of Hose, Hose Assemblies; Rubber, Plastic, Fabric, or Metal (Includ
9、ing Tubing); and Fittings, Nozzles and Strainers. and 7-inch, for Refueling-at-Sea Hose. MIL-C-24356 - Couplings, Segmented, Reattachable, 2-1/2-, 4-, 6- STANDARDS FEDERAL FED-STD-162 - Hose, Rubber, Visual Inspection Guide for. FED-STD-601 - Rubber: Sampling and Testing. MILITARY MIL-STD-105 - Samp
10、ling Procedures and Tables for Inspection By Attributes. 2.1.2 Government documents. The following Government document forms a part of this specification to the extent specified herein. DEPARTMENT OF TRANSPORTATION Code of Federal Regulations Federal Food, Drug and Cosmetic Act 21 CFR 177.2600 (Appl
11、ication for copies should be addressed to the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(Copies of specifications and standards required by contractors in co
12、nnection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. The issues of the documents which are indicated
13、as DoD adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 297 D 380 - Rubber Hose, Methods of Testing. D 381 - Existent Gum in Fuels by Jet Evaporation, Test Method for. (DoD adopted) D 412 - Rubber P
14、roperties in Tension, Test Method for. (DoD adopted) D 413 - Rubber Property - Adhesion to Flexible Substrate, Test Method for, (DoD adopted) D 573 - Rubber Deterioration in an Air Oven, Test Method for. (DoD adopted) D 2240 - Rubber Property - Durometer Hardness, Standard Test Method for. (DoD adop
15、ted) - Rubber Products - Chemical Analysis, Methods for. (DoD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Nongovernment standards and other publications are normally available from the organizatio
16、ns which prepare or which distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.3 Order of precedence, In the event of a conflict between the text of this specification and the references cited herein (except for associated detail
17、 specifications, specification sheets or MS standards), the text of this speci- fication shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3 REQUIREMENTS 3.1 Construction - types A, B, and C.
18、The hose shall have a rubber tube, reinforcement consisting of either braided synthetic fiber yarn (type C only) or spiral plies of synthetic fiber cord (four plies minimum for type A) fully bonded together with rubber, friction impregnated through the cord so as to create a rubber-to-rubber bond, a
19、nd a rubber cover. to their adjacent layers so as to provide a continuous rubber bond from the inner tube through the reinforcement to the outer cover. Vulcanization shall be uniform over the length of the hose. Ends of the hose shall be cut square and shall not be capped. Types A, B, and C shall be
20、 compatible with couplings in accordance with MIL-C-24356. All layers shall be bonded Synthetic fiber cord shall be polyamide, or polyester, 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-22240F Li7 W 9779906 0463513 3 W 6 MIL-H-22240F(SH) a
21、- 31.1 Type B only. In addition to the construction requirements specified in 3.1, type B hose shall be reinforced longitudinally in such a manner to meet the requirements of 3.8.1 when tested in accordance with 4.8.9.1. 3.2 Appearance. The tube, reinforcement and cover shall have no more total visu
22、al defects than are allowed in 4.5.1 when the inside surface, outside surface and ends of the hose are examined in accordance with 4.7. 3.3 Length. Unless otherwise specified (see 6.2.1), types A and C hose shall be 35 feet long, and type B hose shall be 50 feet long when measured in accordance with
23、 4.8.1. minus 1 percent (see 4.6.1). acceptable if inspected by the contracting officer (see 6.2.1). The acceptable variation in length shall be plus or Residual test lengths at least 30 feet long are 3.4 Inside diameter, wall thickness, unit weight, and tube and cover thicknesses, These features of
24、 the hose when measured in accordance with 4.8.2 through 4.8.5 respectively, shall conform to the requirements listed in table I. TABLE I. Dimensions, unit weight and test pressures. Ins ide diameter, inches Wall thickness , inch Tube thickness, inch Cover thickness, inch Unit weight, lbs/ft Proof p
25、ressure, lb/in2 Burst pressure, lb/in2 Inside diameter , inches Wall thickness , inch Tube thickness, inch Cover thickness, inch Unit weight, lbs/ft Proof pressure, lb/in2 Burst pressure , lb/in2 2-1/2 inch size 2.500 + 0.063 0.312 7 0.047 0.063 kn 0.063 min 2.0 max 300 600 6-inch size 6.000 + 0.125
26、 - 0.000 0.422 + 0.047 0.094 see figure 1. At the other end of the hose section, attach and suspend a 650 lb weight for not less than 15 minutes. At the end of the 15 minutes, remove the weight, fill the hose completely with water and apply a proof pressure of 300 lb/in2 to the hose. the hose and fi
27、ttings examined for leakage or other indication of weakness. At the end of the 5 minutes, depressurize and drain the hose. Remove the couplings and cut the hose section lengthways. interlayer adhesion or reinforcement failure. Evidence of leakage, noticeable weakness, or failure of adhesion oc reinf
28、orcement shall be cause for rejection of the first article. The proof pressure shall be held for 5 minutes and Examine the hose for evidence of tube, 4.5.11 Properties of rubber components. The properties of rubber compo- nents, except testing of the friction rubber, shall be determined on longitudi
29、nal specimens prepared from the hose section obtained in accordance with 4.5.2(c). After separating and buffing smooth, the tube and cover samples shall rest not less than 30 minutes before preparing test specimens. The testing of the fric- tion rubber shall be determined using specimens cut from th
30、e sample obtained in accordance with 4.5.3. 4.8.11.1 Initial tensile properties. Inicial tensile strength and ultimate elongation shall be in accordance with ASTE1 D 412 using specimens cut with die C. The thickness of the die C specimen shall be 0.080 + 0.010 inches. - 4-8.11.2 Tensile properties a
31、fter immersion. The tensile strength and ultimate elongation after immersion in type III fluid of TT-S-735 shall be in accordance with method 6111 of FED-STD-601, using specimens cut with die C of ASTM D 412. area of the specimen. 0.010 inches. Tensile strength shall be based on the swollen cross-se
32、ctional The thickness of the die C specimen shall be 0.080 + - 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- MIL-H-22240F 47 H 777770b 04b3521i 2 H E f- 4.8.11.3 Tensile properties after oven aging. The tensile strength and ultimate elongatio
33、n after oven aging shall be determined in accordance with ASTM D 573 using specimens cut with die C of ASTM D 412, except that the aging period shall be 70 + 1/4 hours at 212 2 2F. specimen shall be OTO80 - + 0.010 inches. The thickness of the die C 4.8.11.4 Volume change after immersion. The change
34、 in volume in percent of.the original volume after immersion in type III fluid of TT-S-735, shall be determined on samples of the tube, cover, and friction in accordance with method 6211 of FED-STD-601. 4.8.11.5 Initial adhesion. The adhesion of the tube and cover to the reinforcement, and of the pl
35、ies of reinforcement to each other, shall be determined in accordance with ASTM D 413, Machine Method and shall meet the requirements of 3.9. 4.8.11.5.1 Specimens. Strip or ring specimens shall be prepared in accordance with ASTM D 380, except that the specimen shall be a minimum of 8 inches in leng
36、th for type A hose. For determining adhesion between plies of reinforcement, the plies to be separated must be at opposing angles. Three specimens of each interface shall be tested. 4.8.11.6 Adhesion after immersion. The adhesion of the tube and cover to the reinforcement, and of the plies of reinfo
37、rcement to each other, shall be determined after the test specimens (see 4.8.11.5.1) have been immersed in type III fluid of TT-S-735 for 46 + 1/2 hour at 80 + 9F. The test procedure for adhesion shall be in accordance with ASTM D 413, Machine Method, except that the wet specimen shall be tested wit
38、hin 15 minutes after it is removed from the fluid. The adhesion values shall meet the requirements of 3.9. 4.8.11.7 Nonvolatile extractable material. 4.8.11.7.1 Test specimen. Test specimen shall consist of strips about 1/16-inch square by 2 inches long, totaling about 5 grams (g) in weight, cut fro
39、m buffed pieces of the tube of the hose. 4.8.11.7.2 Procedure. Specimen shall be weighed and placed in an extrac- tion thimble in the extracting apparatus in accordance with ASTM D 297. hundred milliliters (mL) of type I fluid of TT-S-735 shall be added to the flask. 2-1/2 to 3-1/2 minutes are requi
40、red to fill andempty the extraction cup. extract shall be poured into a weighed container. The specimen and flask shall be rinsed with 25 mL of fresh type I fluid and the wash added to the extract. The nonvolatile residue shall be determined from the extract in accordance with ASTM D 381, except tha
41、t the evaporation time shall be 45 minutes. The weight of the residue shall be expressed as a percent of the original weight of the specimen. The test shall be performed in duplicate and the results averaged. One The specimen shall be extracted for 46 + 1/2 hour at such a rate that The 4.8.11.8 Phos
42、phate plasticizer test. Phosphate plasticizer shall be determined qualitatively in accordance with method 15825 of FED-STD-601, using a small piece of clean sodium about the size of a pea, a test tube about 3 inches long, and the specimens of the residue remaining after the nonvolatile extractable m
43、aterial test specified in 4.8.11.7. The procedure shall be 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 repeated if phosphorus is found, omitting the addition of the nonvolatile extractable material in order to determine whether phosphorus wa
44、s present in any form in any of the reagents used. 4.8.11.9 Resistance to ozone. 4.8.11.9.1 Test specimens. Four 5 by 1 inch specimens of cover material shall be cut from the sample section of hose. The thickness of the specimens shall be 0.080 + 0.010 inches. Two specimens shall be cut along the lo
45、ngitudinal direction of the hose and the other two shall be cut in the transverse direction of the hose. 4.8.11.9.2 Apparatus. Apparatus shall consist of a test chamber with an ozone generating source outside the chamber maintaining an ozone-air atmosphere in the chamber at the temperature and conce
46、ntration desired; a circulating air oven, as described in ASTM D 573 and two pairs of metal plates, 3/8 by 1-1/2 by 8 inches each, with bolt holes spaced centrally 1/2 inch from each end, and provided with bolts and nuts for clamping the specimens. 4.8.11.9.3 Procedure. Specimen shall be placed betw
47、een the metal plates and clamped so that the distance across one of the loops thus formed is 2 inches. The bulk of the specimen shall be reduced by cutting away the loop that projects from the side opposite the measured loop. The cut edges of the specimen shall be coated with paraffin to seal them f
48、rom ozone. Figure 2 is a drawing of the clamped specimen. The clamped specimens shall be conditioned in an air oven for 16 to 24 hours at 100 + ZF. The specimens shall then be placed in the ozone test chamber for 166 +-1/2 hours at 105 + 2F. The concentration of ozone in the chamber shall be .00 + 0
49、.05 parts of ozone per one million parts of air by volume. Specimen shall beexamined at the end of this period for cracking of the hose cover using 7X magnification to determine conformance with the require- ments specified in 3.9. 4.8.11.10 Resistance to water. Type C hose only. 4.8.11.10.1 The inner tube surface of one hose sample per lot shall be extracted in distilled water at reflux temperature in accordance with the following procedure: (a) (b) (c) Subject sample to d
