1、,EmIE!lMIL-H-24606B(SH)U AUKUst 199.4SUPSRSEDINC141L-H-2 f1606A(SH)6 December 1985(See 6.11)liILITARYSPECIFICATIONHOSE, FIRE,SYNTHETICFIBER,DOUBLSJACKSTED,TREATEDFORAPJUSIONRESISTANCE,WITHCOUPLINGS,FIREFIGHTINGANDOTHERWATER SERVICEThis specification is approved for use by the Navel Sea Systems Comma
2、nd,Department of the Navy, and is available for use by all Departments andAgencies of the Department of Oefense.1. SCOPE1.1 -. This specification covers heavy duty, treated, double syntheticfiber woven jacket fire hose for fire fighting and ocher water semice.1.2 Wa%ukdm. Fire hose is of che sizes a
3、nd lengths specified intable I, as specified (see 6.2 and 6.8).Beneficial comments (recommendations, additions, deletions) and any pertinent .data which may be of use in improving this documanc should be addressed to:Cowmander, SEA 03RfJ2,Naval Sea Systems Command, 2531 JeffersonOavisHvy,Arlington,V
4、A 22242-5160by usingtheself-addressedStandardization DocumentImprovement Proposal (DD Form 1426) appearing at the end of this document orby letter.AHSCN/A FSC 4210. Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
5、ense from IHS-,-,-MIL-H-24606B(SH)TABLE 1. Hose assembly sizrSize code no.150150175250300350400Assembly size (inches)1.501.501.752.503.003.504.00and lenth.Assembly length (feet)255050505050502. APPLICABLE DOCUMENTS2.1 Covermnent documents.2.1.1 Specifications. standards. and handbooks. The following
6、 specifi -cations , standards, and handbooks form a part of this document to the extentspecified herein. Unless otherwise specified, the issues of these documents arethose listed in the issue of the Department of Defense Index of Specifications andStandards (DODISS) and supplement thereto, cited in
7、the solicitation (see 6.2)SPECIFICATIONSFEDERALWW-C-621MILITARYMIL-H-775 -Coupling Assembly, Hose (Fire, Woven-Jacketed,Rubber- or Fabric-lined and Unlined) .Hose, Hose Assemblies; Rubber, Plastic, Fabric, orMetal (Including Tubing) and Associated Hardware:Packaging of. -STANDARDSFEDERALFED-STD-H28
8、-FED-STD-H28/10 -FED-STD-162 -FED-STD-191 -FEO-STD-595 -FED-STD-601 -Screw Thread StandardsAmerican National HoseCoupling Threads.for Federal ServicesCoupling and Fire-HoseHose; Ruber, Visual Inspection Guide for.Textile Test Methods.Colors Used in Government Procurement.Rubber: Sampling and Testing
9、.(Unless otherwise indicated, copies of federal and military specifications,standards , and handbooks are available from the Standardization Documents OrderDesk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. )2.2 Non-Government publications. The following document(s) form a part ofthis
10、document to the extent specified herein. Unless otherwise specified, theissues of the documents which are DDD adopted are those listed in the issue of theDODISS cited in the solicitation. Unless otherwise specified, the issues ofdocuments not listed in the DODISS are the issues of the documents cite
11、d in thesolicitation (see 6.2).2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t41L-H-2L606B(SH)AMERICAN SOCIETY FOR TESTING AND MTERIAN (ASTM)B 134 -D 380 -D 412 -D 613 -D 518 -D 573 -D llft9 -D 22f+0 -D 2256 -Standard Specification for Brass Wire.
12、 (DoD adopted)Standard Test FSethodsfor Rubber Hose. (DoD adopted)Standard Test !lethodsfor Vulcanized Rubber andThermoplastic Rubbers and Thermoplastic Elastomers -Tension. (DoD adopted)Standard Test Methods for Rubber Property - Adhesion toFlexible Substrate. (DoD adopted)Standard Test Ftethod for
13、 Rubber Deter iorar.lon - SurfaceCracking. (DoD adopted)Standard Test Flechodfor Rubber - Deterioration in an AirOven. (DoD adopted)Standard Test Hethod for Rubber Deterioration - SurfaceOzone Cracking in a Chamber. (DoD adopted)Standard Test tiethodfor Rubber Property - DurometerHardness. (DoD adop
14、ted)Standard Test Method for Tensile Properties of Yarns bythe Single-Strand Method.(Application for copies should be addresaed to the American Society forTesting and Materials, 1916RaceStreet,Philadelphia,PA 19103.)(Non-Government standards and ocher publications are normally available fromthe orga
15、nizations that prepare or distribute the documents. These documents alaomay be available in or through libraries or other informational services.)2.3 Qrder of Drecedence. In the event of n conflicc between the text ofthis document and the references ciced herein (except for related associateddetail
16、specifications, specifications, specification sheets or tiSstandards) , thetext of this documenc takes precedence. Nothing in this documenc, however,supersedes applicable laws and regulations unless a specific exemption has beenobtained. .3. REQUIREMENTS3.1 1.2 plast.based urethane.Rubber, if used i
17、n che liner, shall be compounded froma a75ixture of the cwo stocks.Plastic, if used, shall be extruded from virgin polyester3.2.2 Jacket varnq. The yarna used in both jackets shall be of virginsynthetic yarns as specified below:3Provided by IHSNot for ResaleNo reproduction or networking permitted wi
18、thout license from IHS-,-,-MIL-H-24606B(SH)(a)(b)Yarns that docompounds are3.2.2.1to coumletelvFiller yarn: A high strength, low stretch filament polyester.Warp yarn: A high strength, low stretch filament polyamide nylon6 or 6,6 stable high bulked yarn comprising anentangled convoluted mass of conti
19、nuous filaments ,the bulked yarn as supplied for weaving having adenier not less than B percent greater than thedenier of the unbulked yarn. The bulk in the yarnshall be retained during the weaving process suchthat the denier of the bulked yarn in the wovenjacket is not less than 6 percent greater t
20、han thedenier of the unbulked yarn.orSpun polyester yarn made from high strength, lowstretch staple filament.orFor inner jacket only, high strength, low stretchfilament polyester.not accept total saturation by any means of treatment with abrasionnot acceptable.Abrasion - taber method. The number of
21、abrasion cycles requiredabrade through one or more filler yarns of the outer jacket for. .all sizes of hose shall be not less than 3000 cycles3.2.2.2 Abrasion - Factorv Mutual Research Corporation method. The numberof abrasion cycles required to completely abrade through the outer jacket forall size
22、s of hose shall be not less than 10,000 cycles.3.2.3 . The color of the outer.jacket shall approach color chip 22510of FEO-STD-595. No color variation which approaches another chip number shall bepermitted.3.3 Construction. The hose shall consist of a seamless liner of rubberor plastic bonded to the
23、 inner woven jacket over which the treated outer wovenjacket is placed. Unpressurized hose shall assume the shape of a flattened ovalto facilitate storage3.3.1 Liner The liner shall be a single ply,. synthetic rubber or urethaneextrusion of uniform thickness. The liner shall be free from dirt, blist
24、ers , andother imperfections. Inside surface shall be smooth and free from corrugationsLiner th;ckness shall be4.6.2. Liner propertiesIII.as specified in table II when a75easured as specified inbefore and after aging shall be as specified in tableProvided by IHSNot for ResaleNo reproduction or netwo
25、rking permitted without license from IHS-,-,-141L-H-24606B(sH)TAB II. .I Hose size150175250300350400Min. thickness (inches)nRubber Utethane0.040 0.012.Obo .012.060 .012.049 .015.049 .015.05B .018I Property I ValueShore hardness, A scale 50 5 (rubber)80 10 (urethane)Tensile strength, before aging 120
26、0 psi minimum (rubber)3000 psi a75inimum (urethane)Tensile strength, afcer aging 70 percent retention after agingUltimate elongation. before aging 400 percent a75inimumUltimar.e elongation, after aging 70 percent retention after agingOzone resistance No crscks after 100 hours exposure3.3.1.1 . The a
27、dhesion between the liner snd the jacket shall besuch that the rate of separation of s 1.50 inch strip of lining,-transversely cut,shsll be not greater than 1 inch per a75inute (for rubber) and O.25 inch per minute(for urethane) under e 12 pound weight.3.3.2 Jackets. The jackets shall be seamless an
28、d have the polyester filleryarns woven tightly and evenly around the liner throughout its length, with thewarp ends interwoven with and completely covering the filler yarns. At no pointshall the tube show through che inner jacket. The yarns shall have a tensilestrength adequste to a75eet the require
29、ments specified in cable IV and filler pickcount shall meet the requirements of table V. The jackecs shall be free ofdefects, mis-weaves, dirt, knots, lumps, and irregularities that a75ight affect theserviceability of the finished product.5Provided by IHSNot for ResaleNo reproduction or networking p
30、ermitted without license from IHS-,-,-Hosesize150175250300350400MIL-H-2 but any final twist shall be to the right.TA8LE IX. Hose twist.Hose size Hose twist(degrees per foot)I 150 through 175 I 29250 through 400 12.53.4.1.3 Hose waru. When subjected to the proof pressure test as specifiedin 4.6.1.1,
31、the hose shall deviate not greater than 20 inches (for 50 foot hoselength) or 10 inches (for 25 foot hose length) from a straight line drawn fromcenter to center of the fittings at the ends of the hose3.4.1.4 Rise When subjected to the proof pressure test as specified in.4.6.1.1, the hose shall not
32、rise or lift off the flat surface upon which it rests8Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-141L- H-24606 B(SH)3.6.1.5 . Whentestedas specifiedin6.6.1.3,thehoseshallnot leak,burstor showothereignsof feilure.3.4.1.6 v temueracure fle When te
33、sted as specified in L.6.3, thehose shell show no damage to the jackets or lining,.and shall not leak whensubjected to the proof pressure test upon completion of the 10V temperatureflegibility test.3.6.1.7 JJaterabsoruc. When tested as specified in 6.6.4, the maximumweight gain shall be not greater
34、than that specified in table X.TABLE X. Mter abso. wWeight gain pounds (max)Hose size per 50 foot length150 5175 5250 7300 8.5350 1211oo 153.4.2 Burst uressure. The hose shall not burst at pressures less than thoseas specified in table VIII for the respective size of hose when tested asspecified in
35、4.6.1.2. The pressure shall be applied co the hose when it is lyingscralghc end when it is held in e circular arc of 27-inch radius.3.5 . The first ercicle semple shall conform to thefriction or head loss maximum requirements as specified in table XI when tested asspecified in 4.6.5.TABLS XI. e.Hose
36、 Flow rate Allowable losssize (gallons per a75inute) per 50 feet (psi)150 100 17175 125 9250 250 K300 308 8.5350 295 4boo 300 2.53.6 . Each hose assembly shall be marked at a point beginning notlass than 4 feet from each end with stenciled letters not less than 1 inch high inindelible ink of a contr
37、asting color. Harking shall include:9Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24606B(SH)(a)(b)(c)(d)(e)Number of this specification, including revision letter.Size and length.The words “Service test pressure _“ (see table XII).Month and
38、year of manufacture.Manufacturers name or commercial and Government entity (CAGE) codenumber.TABLE XII. Service test uressure.Hose size I Service test pressure (psi)1501752503003504003003003003003002003.7 hbelin of hose. When specified (see 6.2), hose shall be approved andlabeled by a nationally rec
39、ognized testing group or agency (see 6.6) adequatelyequipped to perform testing of fire hose.4. QUALITY ASSURANCE PROVISIONS4.1 ResDonsibilitv for inspection. Unless otherwise specified in thecontract or purchase order, the contractor is responsible for the performance ofall inspection requirements
40、(examinations and tests) as specified herein. Exceptas otherwise specified in the contract or purchase order, the contractor may usehis own or any other facilities suitable for the performance of the inspectionrequirements specified herein, unless disapproved by the Government. TheGovernment reserve
41、s the right to perform any of the inspections set forth in thisspecification where such inspections are deemed necessary to ensure supplies andservices conform to prescribed requirements.4.1.1 Resuonsibilitv for compliance. All items shall meet all requirementsof sections 3 and 5. The inspection set
42、 forth in this specification shall becomea part Of the contractors overall inspection system or quality program. Theabsence of any inspection requirements in the specification shall not relieve thecontractor of the responsibility of ensuring that all products or suppliessubmitted to the Government f
43、or acceptance comply with all requirements of thecontract. Sampling inspection, as part of the manufacturing operations, is anacceptable practice to ascertain conformance to requirements, however, this doesnot authorize submission of known defective material, either indicated or actual,nor does it c
44、ommit the Government to accept defective material.4.2 Classification of inspections. The inspection requirements specifiedherein are classified as follows:(a) First article inspection (see 4.3)(b) Quality conformance inspection (see 4.4).10Provided by IHSNot for ResaleNo reproduction or networking p
45、ermitted without license from IHS-,-,-UIL-H-24606B(SH)fJ.2.l Mwe ccion log. For the purpose of quality conformance inspection andtest aa.mpling,a lot is defined as all che hose lengths with couplings, of thesame size, produced in one facility, using the same production processes andmaterials, and be
46、ing offeredfor delivery ac one time.3 . Unless ochervise specifted (see 6.2),first article inspectionshallbe performedon onehoseassembly.(see6.4).The inspectionshallinclude the examination of 6.5 and the testi of 4.6 (see6.3). The firstarticlemsybe a standard production item from the contractorscurr
47、ent inventory provided that the unit meets the requirements of thisspecification and is representative of the design, construetion, and msnufacturingtechniques applicable to the remaining units co be furnished under the contrsct.6.4 ance insoecc. Quality conformance inspection shallconsist of the fo
48、llowing:(a) Individual examination and tests (see 4.6.1) .(b) Sampling for cescs (see f4,4.2).4.6.1 dividual examina and test%. Each length of hose or hoseassembly shall be subjected to the following examination and tests:(a) Visusl exsmlnatlon and dimensional inspecclon, except for insidediameter (
49、see 6.5 through L.5.2.1).(b) Hydrostatic pressure test (see 4.6.1.1).6.fl.2.l on. acc 1 r ce a.eead tensile sttiimat e elonation. otance. J.iner thickness. hardness. adheBiOs amete. As n a75inimum, the concraccor shall randomly select as-la qnti Of completed hose lengths as specified in table XIIIand teatthemas specified in 4.5,2.2, 4.6.2, 6.6.6. .4.6.7,.6.6.9,6.6.10, and 6.6.11 (see 6
