1、Beneficial comments (recommendations, additions, deletions) and any pertinent data that may be of usein improving this document should be addressed to: Defense Logistics Agency, Defense Supply Center,Columbus (DSCC-VAI), P.O. Box 3990, Columbus, OH 43216-5000.FSC 4720INCH-POUNDA-A-5956729 June 2001S
2、UPERSEDINGZZ-H-601EJune 11, 1990COMMERCIAL ITEM DESCRIPTIONHOSE AND HOSE ASSEMBLIES, RUBBER(YARN OR FABRIC REINFORCED) WATER SERVICEThe General Services Administration has authorized the use of thiscommercial item description for all federal agencies.1. SCOPE. This (CID) covers yarn or fabric reinfo
3、rced hose and hose assemblies for general use inwater service.2. CLASSIFICATION.2.1 Grades and classes . Hose covered by this CID will be of the following grades and classes asspecified (see 7.2):Grade 1 - Commercial hose.Grade 3 - Weather and ozone-resistant hose.Class 1 - General water inner tube.
4、Class 2 - Potable water inner tube.2.2 Sizes . Hose covered by this CID will be of the sizes (inside diameter) listed in table I, as specified(see 7.2).3. SALIENT CHARACTERISTICS.3.1 Description . These hose and hose assemblies are suitable for general use in water service, anddepending on the grade
5、 and class, are suitable for water applications where resistance to deterioration byweather and ozone is required, and also for use with potable water.3.2 Materials . Materials shall be free from defects that would adversely affect the performance ormaintainability of individual components or of the
6、 overall assembly. Materials not specified herein shallbe of the same quality used for the intended purpose in commercial practice. Unless otherwise specifiedherein, all equipment, material, and articles incorporated in the products covered by this CID are to benew and fabricated using materials pro
7、duced from recovered materials to the maximum extent possiblewithout jeopardizing the intended use.3.2.1 Rubber.3.2.1.1 Grade 1 . The rubber compound used in the construction of the cover and the class 1 tube ofgrade 1 hose shall be compounded from natural rubber, synthetic rubber, or a mixture of n
8、atural andsynthetic rubber.3.2.1.2 Grade 3 . The rubber compound used in the cover of grade 3 hose shall be weather-resistant andozone-resistant. The rubber compound used in class 1 inner tube and other parts of the hose shall becompounded from natural rubber, synthetic rubber, or mixtures of natura
9、l and synthetic rubber.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5956723.2.1.3 Class 2 inner tube . Class 2 inner tube material for grades 1 and 3 hose shall be compoundedfrom natural or synthetic rubber materials that are certified as safe
10、 for use in the transport of potablewater in accordance with National Sanitation Foundation (NSF) Standard 61, or the Food and DrugAdministration (FDA), Code of Federal Regulations 177.2600. The cured rubber shall meet the extractionrequirements of 3.7.6.3.2.2 Other material . Other materials shall
11、be as specified hereinafter.3.3 Construction . The hose shall consist of:a. An inner rubb er tube.b. A ply or plies of cotton or suitable synthetic yarn or fabric.c. An outer rubber cover.3.4 Reinforcement . The reinforcement shall consist of a ply or plies of braided, knit, or helically woundyarn o
12、r plies of fabric. Both the fabric and the yarn shall be made from high-grade cotton or syntheticfiber. The fabric and the yarn shall be free from defects and sufficiently strong to enable the hose towithstand the hydrostatic test pressures specified in table I and at the same time be soft and pliab
13、le.3.4.1 Reinforcement plies . The reinforcement plies of yarn may be braided or knitted in one or moreplies over the tube, or helically wound in multiples of two layers with alternate layers wound in oppositedirections. If multiple plies of braided or knitted yarn are used, a distinct layer of rubb
14、er compound shallbe used between the plies to facilitate adhesion to one another and to the tube and cover. A similar layermay be used between the plies of the helically wound reinforcements. When used, the plies of squarewoven fabric shall be wrapped at a bias of approximately 45 over the tube. The
15、 fabric shall overlap noless than 0.50 inch. The plies of fabric shall adhere to each other and, at the same time, adhere to theinner tube and to the outer cover.3.5 Length . The length of hose up to and including 1.0 inch inside diameter shall be 25 feet or multiplesthereof up to approximately 500
16、feet; hose 1.25 and 1.50 inches inside diameter shall be 25 feet ormultiples thereof up to approximately 250 feet; hose over 1.50 inches inside diameter shall be 50 feet(see 7.2). Hose length, with a tolerance of 2 percent, shall be measured in accordance withASTM D380.3.6 Couplings . Unless otherwi
17、se specified (see 7.2), hose shall be furnished without couplings. Whenspecified, a female and a male coupling shall be attached on each end of the hose. The couplings shallbe capable of withstanding the test pressures specified in table I without leaking or slipping. On each endof the hose shall be
18、 attached one of the following couplings, as specified (see 7.2).a. Shank type coupling with interlocking clamps . Hose fitted with interlocking couplings (removable),when required, shall include a serrated nipple and two sections of a clamp equipped for grippingand compressing the hose surface agai
19、nst the nipple. The clamp shall have grooved or waffledinterior surfaces and shall have holes for fastening with four bolts. For hose with inside diametersizes up to and including 0.75 inch, a two-bolt clamp shall be furnished. The protecting end of thenipple shall have a recess in the outer surface
20、 to engage the fingers of the clamps. The swivel nutused for tightening the female and male portions of the coupling shall be either hexagonal oroctagonal.b. Shank type couplings and clamps or ferrules . Shank type couplings and clamps or ferrules, whenrequired, shall be in accordance with WW-C-624,
21、 type I or type II. Clamps shall conform to CIDA-A-52506.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-595673c. Internal expansion ring-type . The internal expansion ring-coupling, when required, shall be inaccordance with WW-C-624, type III.TA
22、BLE I. Physical requirements for hose and hose assemblies.Nominal size in inches (in.)(inside diameter)0.250.3750.500.6250.751.0 1.25 1.50 2.02.503.03.504.0Tolerance, inside diameter,plus or minus (in.) 0.031 0.031 0.062 0.062 0.062 0.062Thickness, minimum (in.):TubeCover0.0500.0500.0600.0500.0600.0
23、500.0600.0500.0620.0620.0940.078Number of reinforcementplies (minimum):WrappedBraided or knitHelically wound212212222222222222Hydrostatic test pressure,minimum, pounds persquare inch (psi)Proof test 1/Burst test300600300600300600250500200400200400Adhesion, minimum, lb/in.Between cover and pliesBetwe
24、en tube and pliesBetween plies 2/868888888888888888Tensile strength (beforeaging) minimum, psi:TubeCover800100080010008001000800100080010008001000Ultimate elongation (beforeaging) minimum percent:TubeCover1502001502001502001502001502001502001 / The hydrostatic proof test shall be made only when hose
25、 is purchased with couplings. The hose shallnot contract in diameter during the test.2 / When applicable.3.6.1 Rubber washers . Female couplings shall be fitted with a rubber washer suitable for the purpose.3.6.2 Threads . The coupling connection ends shall be threaded in accordance with FED-STD-H28
26、.3.7 Physical requirements . The hose shall conform to all of the requirements specified in table I whentested in accordance with the test method specified in table II, with any modification to the methodspecified herein.3.7.1 Tensile strength and elongation . The tensile strength and elongation of
27、the hose tube and cover,before aging, shall be as specified in table I when tested in accordance with the test method specified intable II.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-595674TABLE II. Test methods.Physical Requirement Test Meth
28、od ReferenceHose size inside diameter Table IHose length 3.5Thickness of tube and coverASTM D380Table ITensile strength and elongationof tube and cover ASTM D412 3.7.1Adhesion ASTM D413 3.7.2Hydrostatic pressureProof pressure test 3.7.3Burst pressure testASTM D3803.7.4Accelerated aging ASTM D573 3.7
29、.5Extraction in distilled watergrade 3, class 2 ASTM D297 3.7.6Ozone resistancegrade 3, cover ASTM D1149 3.7.73.7.2 Adhesion . The minimum force required for separation of cover and plies, tube and plies, orbetween plies shall be as specified in table I when tested in accordance with the test method
30、 specified intable II.3.7.3 Proof pressure, coupled assemblies . Hose fitted with couplings shall withstand the proof pressurespecified in table I for at least one minute when applied in accordance with the test method specified intable II. Water shall be used as the test media. Leakage or other evi
31、dence of defects shall be cause forrejection.3.7.4 Burst pressure . The hose shall withstand the burst pressure specified in table I when applied inaccordance with the test method specified in table II. Water shall be used as the test media. Leakage orother evidence of defects shall be cause for rej
32、ection.3.7.5 Accelerated aging . After accelerated aging, and when tested in accordance with the test methodspecified in table II, hose tensile strength shall be not less than 80 percent of the values specified intable I, and the ultimate elongation shall be not less than 50 percent of the values sp
33、ecified in table I.Accelerated aging shall be in accordance with ASTM Test Method D573, except that the time for agingshall be 70 hours at a temperature of 212 F.3.7.6 Extraction of class 2 hose . The extractable nonvolatile matter in class 2 inner tube shall not exceed21 milligrams per square inch
34、when the tubes are tested as shown below:a. Remove a 1-inch ring of inner tube and cut or buff away the outer surface until the surface issmooth. Cut a length of inner tube to obtain a sample weighing approximately 10 grams, based on aminimum thickness of .050 inch.b. Subject the sample to distilled
35、 water at reflux temperature for 7 hours in an extraction apparatusas shown in figure 1 of ASTM Test Method D297.c. Filter the solution through #40 filter paper and collect the extract in a tared container.d. Extract the rubber sample in an additional 50-75 cubic centimeters of distilled water at a
36、refluxtemperature for 2 more hours and repeat step c. Combine the extract solutions and evaporate todryness. The container and residue shall be dried in an oven at 2215 F for one hour, cooled in adesiccator and weighed. A blank shall be run using the same amount of distilled water. After makingProvi
37、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-595675allowance for the blank, the weight of the residue shall be recorded to the nearest milligram. Themilligrams per square inch shall be determined by dividing the weight of extract by the sample tota
38、lsurface area (length x width in inches x 2).3.7.7 Ozone resistance, grade 3 . The rubber cover of grade 3 hose shall show no visible cracking under2X magnification when subjected to ozone in accordance with ASTM Test Method D1149. The samplesshall be mounted in a 20 percent elongated position, cond
39、itioned for 24 hours in an ozone-freeatmosphere, then exposed for 72 hours at 104 F to an atmosphere containing 50 parts per hundredmillion (pphm) of ozone.3.8 Marking of hose.3.8.1 General water hose . Each length of hose shall be marked in a color that contrasts with the color ofthe hose cover. Ma
40、rking shall be accomplished either by in-laying a rubber or other suitable material, orby applying a suitable composition ink, bonding the marking onto the cover so that the marking cannot beremoved except by mechanical means. The marking shall consist of the manufacturers name ortrademark, the quar
41、ter and year of manufacture, the word “water“, the symbol “A-A-59567“, the grade, theclass of hose and the words “NOT FOR USE WITH POTABLE WATER“. Hose shall be marked atregular intervals of not more than 25 feet. Letters shall be at least 0.125-inch high for sizes 0.25-inch to0.625-inch inside diam
42、eter inclusive. Hose in sizes 0.75-inch and larger shall have letters at least 0.25-inch high. An alternative method of marking may be by the application of a continuous embossed stripalong the entire length, vulcanizing the hose, and subsequently removing the strip, leaving a continuousrelief ident
43、ification area. Identification shall include the manufacturers name or trademark, the word“water“, the symbol “A-A-59567“, the grade, the class of hose, and the words “NOT FOR USE WITHPOTABLE WATER“ shall be repeated at maximum intervals of 36 inches. When the alternative methodof marking is used, n
44、o color contrast is required.3.8.2 Potable water hose, class 2 . When class 2 is specified (see 7.2), each hose length shall bemarked in the same manner as specified in 3.8.1, except that the words “POTABLE WATER USE ONLY“shall be used in place of “NOT FOR USE WITH POTABLE WATER“.4. REGULATORY REQUI
45、REMENTS. The offerer/contractor is encouraged to use recovered material tothe maximum extent practicable, in accordance with paragraph 23.403 of the Federal AcquisitionRegulation (FAR).5. PRODUCT CONFORMANCE.5.1 Responsibility for inspection . The contractor is responsible for the performance of all
46、 inspections(examination and tests).5.2 Product conformance . The products provided shall meet the salient characteristics of this CID;conform to the producers own drawings, specifications, standards, and quality assurance practices; andbe the same product offered for sale in the commercial marketpl
47、ace. The government reserves the rightto require proof of such conformance.5.3 Examination . Each hose or hose assembly shall be visually and dimensionally examined forcompliance with requirements. Examination requiring testing to determine conformance to salientcharacteristics shall be accomplished
48、 by subjecting hose sample specimens to the tests and methodsspecified in table II. Unless otherwise specified (see 7.2), sampling shall be in accordance withANSI/ASQ Z1.4. Any modification necessary following failure to meet the specified requirements shallreceive particular attention for adequacy
49、and suitability. This element of inspection shall encompass allexaminations of material, configuration, performance and marking requirements. Non-compliance withany specified requirement, or the presence of one or more defects, shall constitute cause for rejection.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5956766. PACKAGING. Preservation, packing, and marking shall be as specified in the contract or purchaseorder.7. NOTES.
