1、 MIL-DTL-13719G 30 August 2012 SUPERSEDING MIL-DTL-13719F 18 June 2007 DETAIL SPECIFICATION HOSE AND HOSE ASSEMBLY, RUBBER, HYDRAULIC BRAKE, TYPE I AND TYPE II This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification
2、covers hose and hose assembly, rubber, hydraulic brake, type I and type II. 1.2. Part or Identifying Number (PIN). The PIN consists of the letter M, the basic specification number, a dash, a number for hose type, a number for hose size, a dash, three numbers for length a dash, and a number for fract
3、ions of an inch or for bulk hose lengths the letter B or S. M 13719 - 1 -3 - 096 - 6 1.2.1 Type. Type designator and characteristics, see table I. TABLE I. Type and characteristics. Designator Type Characteristics 1 Type I Regular expansion 2 Type II Low expansion AMSC N/A FSC 2530Comments, suggesti
4、ons, or questions on this document should be addressed to: Defense Supply Center, Columbus, Attn: VAI, P.O. Box 3990, Columbus, OH 43218-3990, or emailed to fluidflow.dla.mil. Since contact information can change you may want to verify the currency of this address information using the ASSIST Online
5、 database at https:/assist.dla.mil. Sizes (see 1.2.2) INCH-POUND Specification number Type (see 1.2.1) Length in inches or feet (see 1.2.3.1 or 1.2.3.3) M prefix Fractional lengths in 1/8 inch increments (1 thru 7), see 1.2.3.2 or B or S for bulk lengths, see 1.2.3.3 Provided by IHSNot for ResaleNo
6、reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13719G 2 1.2.2 Inside diameter (ID). ID designators, see table II. 1.2.3 Hose lengths. Lengths of bulk hose are represented by inches and fractions in 1/8 inch increments. 1.2.3.1 Lengths of hose. Lengths of hose are represent
7、ed by inches unless bulk hose is required see 1.2.3.3. 1.2.3.2 Fractions. Fractions are expressed in 1/8 inch increments (1 thru 7). Not applicable to bulk hose lengths. 1.2.3.3 Bulk hose lengths. Bulk hose lengths are represented by the letter B or S. Bulk lengths “B” are in increments of 20 feet o
8、r more (see 3.4.3.1). The “S” designator is used to define specific lengths in feet (see 3.4.3.2). Note: For the inch designator insert the number zero in front of designator for lengths less than 100 inches (2.54 m). Examples: When 12 and 7/8 inch length is required the designator is: 012-7 When 96
9、 inches is required the designator is: 096 When 30 feet total length is required the designator is: 030-B When 30 feet continuous length is required with a 1% tolerance the designator is: 030-S 1.3. PIN for hose assemblies. See 3.6.3. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this
10、 section are specified in sections 3, 4, or 5 of this specification. This section does not include documents 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 user
11、s are cautioned that they must meet all specified requirements documents cited in sections 3, 4, or 5, of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications standards, and handbooks. The following specifications, standards, and handbooks form a part of
12、 this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARD FED-STD-162 - Hose, Rubber, Visual Inspection Guide For DEPARTMENT OF DEFENSE SPECIFICATION MIL-PRF-46176 - Brake Fluid, Silicone
13、, Automotive, All Weather, Operational and Preservative Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13719G 3 DEPARTMENT OF DEFENSE STANDARD MIL-STD-889 - Dissimilar Metals (Copies of these documents are available online at https:/assist.d
14、la.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 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 do
15、cuments are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM B117 - Salt Spray (Fog) Apparatus Operating ASTM D380 - Hose, Rubber ASTM D471 - Rubber Property - Effect of Liquids (Copies of these documents are available online at http:/www.astm.org or from the ASTM International,
16、P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) SAE INTERNATIONAL SAE J1401 - Road Vehicle - Hydraulic Brake Hose Assemblies for Use With Nonpetroleum - Base Hydraulic Fluids SAE AMS2700 - Passivation of Corrosion Resistant Steels SAE AS1933 - Age Controls for Hose Containin
17、g Age-Sensitive Elastomeric Material SAE J1288 - Packaging, Storage, and Shelf Life of Hydraulic Brake Hose Assemblies (Copies of these documents are available online at http:/www.sae.org or from the SAE World Headquarters, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence.
18、 In the event 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. W
19、hen specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.3. Hose assemblies shall be tested as a combination of hose and fittings from specific sources. Any subsequent change to either the hose or fitting source in an approved assembly requires documented
20、 approval of the procuring activity. 3.2 Dissimilar metals. When dissimilar metals are used in intimate contact with each other, such as assembly to next higher assembly, protection against electrolysis and corrosion shall be provided. Dissimilar metals such as brass, copper or steel (except corrosi
21、on-resisting steel passivated in accordance with SAE AMS2700) shall not be used in intimate contact with aluminum or aluminum alloy. Protective measures for dissimilar metals shall be in accordance with MIL-STD-889. 3.3 Materials. Unless otherwise specified, all materials shall conform to the applic
22、able drawings (see 4.5.1 and 6.2) and shall be capable of meeting all the requirements specified herein. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13719G 4 3.3.1 Recycled, recovered, or environmentally preferable materials. Recycled, re
23、covered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets specified requirements, and promotes economically advantageous life cycle costs. 3.3.2 Hose design and construction. Hose design and construction shall be as specified on
24、figure 1 and consist of an inner tube, reinforcement, and outer cover, see 3.3.2.1, 3.3.2.2 and 3.3.2.3. EPDM PVA CR PVA EPDM FIGURE 1. Dimensions and configuration. 3.3.2.1 Cover. The hose cover shall be a black. The primary polymer shall be a compound of ethylene propylene diene monomer (EPDM). Th
25、e hose cover shall be free of holes exposing reinforcing material, see 4.5.1. 3.3.2.2 Reinforcement. Hydraulic brake hose shall be reinforced with a chloroprene rubber (CR) based compound (to act as a “friction“ layer) between layers of polyvinyl acetate (PVA) yarn. 3.3.2.3 Inner tube. The inner tub
26、e shall be made of a compound whose primary polymer is EPDM. The inner tube shall have a smooth bore; it shall be free of pitting, cracks and other recognizable defects. The bore shall be free of dirt and other foreign material and shall not contain residual mandrel lubricant to the extent that the
27、requirements of this specification cannot be met. 3.4 Hose assembly design and construction. Design and construction of the hose assemblies shall be as specified in the applicable drawing (see 4.5.2 and 6.2). 3.4.1 Fittings. Fittings of hose assemblies shall be securely attached to the hose. Each hy
28、draulic brake hose assembly shall have permanently attached brake hose end fittings which are attached by deformation of the fitting about the hose by crimping or swaging. Form, size, threads per inch and class of fit shall be as specified in applicable drawing(s) (see 4.5.1 and 4.5.2). 3.4.2 Dimens
29、ions. ID (nominal) of the hose shall be specified in table II. Hose assemblies shall be furnished in the nominal ID and length as specified see 4.5.2 and 6.2. TABLE II. ID size and designator. 1/ Dash size designator ID (nominal) inch decimal Inch fraction mm -2 .125 1/8 3.18 -3 .188 3/16 4.78 -4 .2
30、50 1/4 6.35 1/ Metric equivalents are given for information only. Hose OD, see table II Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13719G 5 3.4.3 Length of bulk hose. 3.4.3.1 B designator of bulk hose lengths. Bulk hose shall be furnishe
31、d in lengths greater than 20 feet (6.10 m). However, up to 10% of the order may be furnished in random lengths between 10 and 20 feet (3.05 to 6.10 m). No more than 10% of the order shall be furnished in random lengths between 3 and 10 feet (0.91 to 3.05 m). 3.4.3.2 S designator for specific bulk ho
32、se lengths. When the order is for a specific length in feet, a tolerance of 1% of the required length shall be used. 3.5 Performance. The hose shall meet the following performance requirements. When necessary for testing, the hose shall be assembled with end fittings that have permanently attached b
33、rake hose end fittings which are attached by deformation of the fitting about the hose by crimping or swaging. 3.5.1 Constriction (hose assemblies only). After assembly, the bore of the hose assemblies shall be tested in 4.5.3. An unconstricted bore shall allow the full length of the plug gage to dr
34、op into the hose assembly bore of its own weight in less than 5 seconds. 3.5.2 Proof pressure. Hose and hose assemblies, when tested in 4.5.4, shall show no evidence of leakage when subjected to an internal pressure of 1,500 pounds per square inch (psi) (10.3 megapascal (MPa) minimum for air or 3,00
35、0 psi (20.7 Mpa) minimum for liquid. 3.5.3 Expansion resistance. Hose, when tested in 4.5.5, shall not expand more than the values shown in table III. TABLE III. Maximum hose expansion. 1/ Hose ID inch (mm) 1,000 psi (6.9 Mpa) 1,500 psi (10.3 Mpa) Reg. expansion hose type I cm3/ft (cm3/m) Low expans
36、ion hose type II cm3/ft (cm3/m) Reg. expansion hose type I cm3/ft (cm3/m) Low expansion hose type II cm3/ft (cm3/m) .125 (3.18) .66 (2.17) .33 (1.08) .79 (2.59) .42 (1.38) .188 (4.78) .86 (2.82) .55 (1.80) 1.02 (3.35) .72 (2.36) .250 (6.35) 1.04 (3.41) .82 (2.70) 1.30 (4.27) 1.17 (3.85) 1/ Metric eq
37、uivalents are given for information only. 3.5.4 Bursting strength. Hose assemblies, when tested in 4.5.6, shall withstand, without leaking or bursting, an internal hydrostatic pressure for a 2-minute hold period and any pressure up to and including the burst pressures, as specified in table IV. TABL
38、E IV. Hold and burst pressures. 1/ Hose nominal ID inch (mm) Hydrostatic pressure 2-minute hold Minimum burst psi (Mpa) psi (Mpa) .125 (3.18) 4,000 (27.6) 7,000 (48.2) .188 (4.78) 3,000 (20.7) 5000 (34.5) .250 (6.35) 3,000 (20.7) 4,500 (31.0) 1/ Metric equivalents are given for information only. 3.5
39、.5 Fatigue life (whip). Hose assemblies, when tested in 4.5.7, shall have a minimum life of 35 hours. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13719G 6 3.5.6 Low temperature flexibility. Hose assemblies, when tested in 4.5.8, shall sho
40、w no evidence of breaks, cracks, or leakage at low temperatures. 3.5.7 Tensile strength. Hose assemblies, when tested in 4.5.9, shall show no evidence of rupture of hose or fittings, or loosening of the fittings when subjected to a straight pull at a separation rate of 1 0.1 inch per minute (25.4 2.
41、5 mm/min.) until a pull load of 325 lb (1446 Newtons) is attained. 3.5.8 Ozone resistance. Hose when visually examined at 9X magnification shall show no evidence of cracks or breaks when tested for ozone resistance in 4.5.10. 3.5.8.1 Hazardous substances and ozone depleting chemicals. The ozone resi
42、stance test (see 4.5.10) may contain hazardous chemicals. It shall be handled in accordance with Federal regulations and guidelines to perform those tests. For further information about toxic chemicals and hazardous materials list, consult the Environmental Protection Agency web database at www.epa.
43、gov/ebtpages/pollutants.html. 3.5.9 Fluid resistance. The volume of a hose tube specimen, when tested in 4.5.11, shall not increase by more than 20 percent nor decrease by more than 3 percent. 3.5.10 Salt spray resistance (steel fittings only). When hose assemblies are exposed to salt spray testing
44、in 4.5.12 the plating on the fittings shall show no corrosion products of zinc or basis metal corrosion products. The appearance of corrosion products visible to the unaided eye at normal reading distance shall be cause for rejection, except for white corrosion products at the edges of the specimens
45、 shall not constitute a failure. Hose assemblies shall subsequently meet the proof pressure requirements of 4.5.4. 3.6 Identification and marking. 3.6.1 Hose. The outer cover of hose shall have the outer cover marked with an oil-resistant, continuous blue stripe at least 1/16 (.0625 inch (1.59 mm) o
46、f an inch wide. The following information shall be permanently and legibly marked or broken into the stripe at repeated intervals of not more than 6 inches (15.2 cm) on the lay line of the hose, see 4.5.2. a. PIN as specified in 1.2, length designator may be omitted. b. Cure date in quarter and year
47、 such as 4Q07 for fourth quarter 2007. c. Capital letters either HR to indicate that the hose is regular expansion hydraulic hose or HL to indicate that the hose is low expansion hydraulic hose. d. Hose assembly manufacturers commercial and government entity (CAGE). e. Manufacturers name or trademar
48、k. 3.6.2 Hose with unmarkable surface. Hose may be marked as specified in 3.6.3, when the cover is too rough, or it is determined that the use of a stripe on the outside cover is impractical. 3.6.3 Hose assembly marking. The hose assembly shall be identified by a permanently snug-fitting aluminum or
49、 stainless steel band around the hose near the end fitting. The band shall be designed to remain tight on the hose to prevent relative movement and resultant chafing. The band shall be etched, embossed, or stamped in block capital letters, numerals or symbols at least one-eighth of an inch high. Where the hose assembly exceeds 4 feet (1.22 m) in length, a band shall be attached near each end fitting
