1、MIL-H-2217D m b L85802b 73Ll m Code letter INCH-POUNDI MIL-H-2217D(SH) 9 Julv 1993 SUPERSEDING 7 July 1976 MIL-H-2217C(SH) Size (id) (inches) MILITARY SPECIFICATION HOSE ASSEMBLIES, WIRE-REINFORCED RUBBER, SUBMARINE RESCUE CHAMBER This specification is approved for use by the Naval Sea Systems Comma
2、nd, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 ScoDe. This specification covers 1- and l-1/4-inch inside diameter (id), wire-reinforced hose assemblies for use on submarine rescue chambers designed to operate at depths
3、up to 850 feet. 1.2 Classification. Hoses are of the following sizes and lengths, as specified (see 1.2.1, 3.4 and 6.2). 1.2.1 Hose assembly size. Hose assembly size is identified by a letter code as shown in table I (see 6.9). TABLE I. Size designation. A B 1 1 - 1/4 Beneficial comments (recommenda
4、tions, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, SEA 05442, Naval Sea Systems Command, 2531 Jefferson Davis Hwy., Arlington, VA 22242-5160 by using the self-addressed Standardization Document Improvement Proposal (D
5、D 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 is unlimited Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-H-2217D 9999906 1858027 670 1.2.2
6、 Hose assemblv length. Hose assembly length is identified by a two- digit number directly indicating length in feet (see 3.4 and 6.9). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications. standards, and handbooks. The following specifi- cations, standards, and handbooks form a par
7、t of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL Q
8、Q-N-281 - TT- S - 735 MILITARY MIL-H-775 - Nickel-Copper Alloy Bar, Rod, Plate, Sheet, Strip, Wire, Forgings, and Structural and Special Shaped Sections. Standard Test Fluids, Hydrocarbon. Hose, Hose Assemblies; Rubber, Plastic, Fabric, or Metal (Including Tubing) and Associated Hardware: Packaging
9、of. STANDARDS FEDERAL FED-STD-162 - Hose, Rubber, Visual Inspection Guide for. FED-STD-601 - Rubber: Sampling and Testing. (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 R
10、obbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the
11、solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 380 - Standard Test Methods for Rubber Hose. (DoD adopted) D 750 - Standard Test Method
12、for Rubber Deterioration Carbon - Arc Weathering Apparatus. (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
13、L-H-2217D 9999906 i1858028 507 (Non-Goverment standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) a 2.3 Order of precedence. In the eve
14、nt of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specifi
15、ed (see 6.2), a sample shall be subjected to first article inspection (see 6.4) in accordance with 4.3. 3.2 Material. Material shall be new and unused. The hose shall have been manufactured not greater than 1 year prior to date of delivery. 3.2.1 Inner tube. The basic rubber stock of which the inner
16、 tube is fabricated shall be natural rubber or a synthetic rubber. 3.2.2 Cover. The basic rubber stock of which the cover is fabricated shall be polymerized chloroprene. 3.2.3 Wire reinforcement. The reinforcing helix wire or wires shall be heavily zinc-coated (galvanized) or copperized, round steel
17、 wire(s) of a diameter and spacing to meet the internal and external hydrostatic pressure requirements specified in 3.4.2, 4.3, table VI and 4.6.1. 3.2.4 Couulings. Each -length of hose shall be fitted with a male coupling on one end and a female coupling on the other end. The female coupling shall
18、be fitted with a washer. The hose end of the couplings shall be so designed as to grip the hose from both the inside by expanding the nipple and outside by swaging the collar. The male and female threaded portion of the couplings shall conform to figures 1 and 2 and the swivel nut to figure 3. The c
19、ollars shall conform to figure 4. Each hose assembly shall be provided with one set of hexagonal clamps conforming to figure 5. a 3.2.5 Orpanic solvents. The organic solvents used at any stage in the construction of the hose, including the solvents used for rubber compounds for fastening couplings t
20、o the hose, for sealing or capping the ends of the hose, for bonding the layers and plies of the air or gas mixture stream passing through the hose, shall conform to the requirements specified in 3.2.5.1. 3.2.5.1 ComDosition. Only solvents having a threshold limit value (TLV) of not greater than 500
21、 milligrams per cubic meter (mg/m3) shall be used (see 6.3 and 6.5). 3.2.6 Other rubber additives. The hose shall contain the minimum quantities necessary of only the purest grades of rubber accelerators, both in the cover and inner tube so as to be as free from odor as possible. The following ingre
22、dients shall not be used: pine tar, coal tar, benzidine, beta-naphthylamine and derivatives, phosphate plasticizers, and aniline (see 6.3 and 6.5). a 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-2217D = 0b 1858029 443 Nipple Coup1 ing Unio
23、n nut Collar Coupling retainer 3.2.7 Coupling lubricants and washer dressing. Coupling lubricants or washer dressings shall be used. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 3.3 Construction. more wire chal tube 3.3.1 Hose. The hose assembly shall consist of an inner rubber tube, two or plies of
24、 fabric braid reinforcement with a rubber ply between the braids, a helix or helixes running the entire length of the hose. Each end of the hose be capped, or sealed, with a 1/16 inch thick rubber compound similar to the to prevent water contact with either the braid or helix wire. 3.3.1.1 Synthetic
25、 rubber filline: - strip. The space between the adjacent wires shall be filled with strips of a compatible rubber compound as is used in the caps. The strips shall be of such thickness that the outside of the hose will not show appreciable corrugations. 3.3.2 Couplings. Each length of hose shall be
26、fitted with a male coupling on one end and a female coupling on the other end. The female coupling shall be fitted with a washer, The hose end of the coupling shall be so designed as to grip the hose from both the inside by expanding the nipple and outside by swaging the collar. The hose fitting com
27、ponents shall be as specified in table II. TABLE II. Hose fitting comDonents. 3.3.3 Clamps. Each hose assembly shall include one hexagonal retainer clamp. The clamp shall conform to figure 5. 3.4 Phvsical reauirements. Hose and hose assemblies shall meet the physical requirements of table III. Unles
28、s otherwise specified (see 6.2), the hose assembly length shall be 50 feet nominal. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-H-2217D = b i1858030 Lb5 U v1 o) H d W 4 FI W 4 m W 4 4 W 4 ci W 4 ur 4 ur =k rl 4 m FI 4 m FI 4 m m 4 m 4 W 4
29、m ul 4 m O O ci W Od a rl -I F1 m- a d o O ur 22 mm oom OOFI WWh cici rld O0 O0 u300 rld + rl ldl 44 Wu3 x? oom OOFI WWb mm dd O0 O0 -00 dd O O ci H H H crl 4 I3 s h E E .rl .4 c E W x u 44 G ao o o 7 o) u.4 rn o) sw w w X 5 Provided by IHSNot for ResaleNo reproduction or networking permitted withou
30、t license from IHS-,-,-MIL-H-2217D m Ob L85803L OTL m A B 3.4.1 Dimensions. The hose OD, ID, and lengths shall conform to table III when measured as specified (see 4.5). Tube and cover thickness shall conform to table III. O. 650 O. 812 3.4.2 Hvdrostatic Dressure 3.4.2.1 Internal Droof and burst. Th
31、e hose assemblies shall withstand the proof and burst test pressures specified in table III when tested as specified (see 4.6.1.1 and 4.6.1.2). There shall be no leakage through the hose, hose fitting, or around the junction of the hose and fitting. There shall be no evidence of coupling slippage. 3
32、.4.2.2 External hydrostatic compression. The hose shall withstand the external pressure specified in table III when tested as specified (see 4.6.1.3). During this test a ball shall be pulled through the hose. The force to pull the ball through the hose shall be not greater than 30 pounds. The ball s
33、ize shall be as specified in table IV. TABLE IV. Ball size. I 1 Hose size I Ball size (inch) 3.4.4 Tensile strength. tube and cover. The initial tensile strength of the tube and cover shall comply with the values of table III when tested as specified (see 4.6.3). Tensile strengths after the immersio
34、n of 4.6.3.1 shall not show a decrease of greater than 50 percent. Tensile strengths after aging (see 4.6.3) shall not show a decrease from table III values of greater than 25 percent unless the test specimen thickness is less than 0.05 inch in which case a maximum decrease of 35 percent will be per
35、mitted. 4.6.3) shall retain 75.percent of the initial value specified in table III. Tensile strength after light aging (see 3.4.5 Elongation. The elongation shall comply with the value specified in table III when tested as specified (see 4.6.3). 3.4.6 Volume swell. The volume swell shall comply with
36、 the value specified in table III when tested as specified (see 4.6.4). 3.5 Bend. There shall be no evidence of cracking, ply separation, or deformation of wire helix when tested as specified (see 4.6.5). 3.6 Off-gassing. The hose shall not contaminate the air passing through it more than that allow
37、ed in table V when tested as specified (see 4.6.6). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-2217D m 9999906 1858032 T38 m MIL-H-2217D(SH) Hose length (feet) 3 - 3/4 50 TABLE V. Maximum allowable concentration of hydrocarbons in air pa
38、ssing through hose. Hydrocarbon concentration as methane equivalent ( mg/m3 ) 4 100 3.7 Tensile strengths of hose assemblv. The hose assembly shall not fail at less than 2400 pounds for the $-inch and 3000 pounds for.the 1-1/4 inch when tested as specified (see 4.6.7). Failure shall be in the hose a
39、nd shall not be evidenced by coupling pull off. 3.8 Brandins. Each hose shall be permanently marked with a continuous, embossed, layline containing the following in letters not less than 1/4 inch high: (a) MIL-H-2217. (b) Manufacturers name, logo, or both. (c) (d) SRC. (e) Quarter and year manufactu
40、rer, 600 pounds per square inch (lb/in2). 3.9 End protection. After fabrication and testing, each end shall be capped, plugged, or taped to protect the threads and prevent entry of foreign matter into the hose assembly. 3.10 Workmanship. Hose assemblies shall be free of dirt, oil, and metal particle
41、s. Swaged pieces shall be free from swage draw marks. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibilitv for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specifie
42、d herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of th
43、e inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibilitv for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification
44、 shall become a part of the contractors overall inspection system or quality program. absence of any inspection requirements in the specification shall not relieve the The 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-H-22L7D W 999990b 18580
45、33 974 W contractor of the responsibility of ensuring that all products or supplies O submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of the manufacturing operations, is an acceptable practice to ascertain conformance to requireme
46、nts, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: (a) First article inspe
47、ction (see 4.3). (b) Quality conformance inspection (see 4.4). 4.3 First article inspection. Unless otherwise specified (see 6.2), first article inspection shall be performed on one hose assembly of each size. inspection shall include the examinations and tests specified in table VI. The TABLE VI. F
48、irst article and ciualitv conformance inspections. Te s t Visual and dimensional examination Hydrostatic Proof Burst External proof Adhesion between plies Tensile Tube Cover Elongation Volume swell Bend Off-gassing Hose assembly tensile Branding End protection Workmanship Requirement 3.4.1 3.4.2.1 3
49、.4.2.1 3.4.2.2 3.4.3 3.4.4 3.4.4 3.4.5 3.4.6 3.5 3.6 3.7 3.8 3.9 3.10 Test method 4.5 4.6.1.1 4.6.1.2 4.6.1.3 4.6.2 4.6.3 4.6.3 4.6.3 4.6.4 4.6.5 4.6.6 4.6.7 First article X X X X X X X X X X X X Quality conformance X See 4.4.2 X See 4.4.2 X X 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-22L7D = 9Ob L85803q 800 4.4 gualitv co
