1、MIL-DTL-32434/2 23 JANUARY 2013 DETAIL SPECIFICATION SHEET HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE, CONVOLUTED, REUSABLE FITTINGS, HIGH TEMPERATURE, MEDIUM PRESSURE, FLARELESS-TO-FLARELESS This specification is approved for use by all Departments and Agencies of the Department of Defense. The require
2、ments for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-32434. Class 1 (450) and class 2 (275) hose assembly styles with flareless-to-flareless reusable fittings see figures 1 and 2. Hose assembly styles with class 1 fittings (450F) corrosion resistant
3、steel Hose assembly styles with class 1 fittings (450F) corrosion resistant steel End 1 End 2 End 1 End 2 NOTES: 1. See table I for fitting ends and hose cut off factor (HCOF). 2. Fittings shall mate with parts designed to SAE-AS33514 flareless fitting end standards. FIGURE 1. Class 1 fittings style
4、s and designators. AMSC N/A FSC 4720 INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32434/2 2 Hose assembly styles with class 2 fittings, (275F), combination of aluminum and corrosion resistant steel Hose assembly styles with clas
5、s 2 fittings, (275F), combination of aluminum and corrosion resistant steel End 1 End 2 End 1 End 2 NOTES: 1. See tables I and II for fitting ends and HCOF. 2. Fittings shall mate with parts designed to SAE-AS33514, flareless fitting end standard. FIGURE 2. Class 2 fittings styles and designators. H
6、ose cut-off factor (HCOF) for assembly with class 1 fittings: See table l. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32434/2 3 TABLE I. HCOF for assembly with class 1 fittings. 1/ Hose assembly styles with class 1 corrosion resistant st
7、eel (CRES) fittings 2/ Fitting ends HCOF (size vs length) 3/ 1 2 3/4 4 5 6 8 10 12 16 20 24 A MS27381 MS27381 1.84 1.78 1.86 2.04 2.32 2.64 2.80 3.16 3.44 4.14 B MS27381 MS27384 2.15 2.18 2.25 2.45 3.11 MS27381 MS27382 3.09 3.63 3.91 4.33 5.10 C MS27381 MS27385 1.78 1.80 1.90 2.05 2.47 MS27381 MS273
8、83 2.73 3.32 3.63 4.06 4.75 D MS27384 MS27384 2.46 2.58 2.64 2.86 3.90 MS27382 MS27382 3.54 4.46 4.66 5.22 6.06 E MS27384 MS27385 2.09 2.20 2.29 2.46 3.26 MS27382 MS27383 3.18 4.15 4.38 4.95 5.71 F MS27385 MS27385 1.72 1.82 1.94 2.06 2.62 MS27383 MS27383 2.82 3.84 4.10 4.68 5.36 1/ Class 1 fittings,
9、 styles A through F, are made from CRES. 2/ For depiction of styles see figure 1. 3/ The HCOF is used in the following calculation to determine the hose length required to produce an assembly of a specific size, style and length: Assembly length - HCOF = Hose length. For example, the hose length req
10、uired to produce a 20.50 inch length assembly of size 6, style A is calculated as follows: 20.50 - 2.04 = 18.46. HCOF for assembly with class 2 fittings: See table ll. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32434/2 4 TABLE II. HCOF f
11、or assembly with class 2 fittings. 1/ Hose Assembly Styles with class 2 combination of aluminum and CRES fittings 2/ Fitting ends HCOF (size vs length) 3/ 1 2 8 10 12 16 20 24 G MS27381 MS27381 2.32 2.64 2.80 3.16 3.44 4.14 H MS27381 MS27384 3.11 MS27381 MS27382 3.09 3.63 3.91 4.33 5.10 J MS27381 MS
12、27385 2.47 MS27381 MS27383 2.73 3.32 3.63 4.06 4.75 K MS27384 MS27384 3.90 MS27382 MS27382 3.54 4.46 4.66 5.22 6.06 M MS27384 MS27385 3.26 MS27382 MS27383 3.18 4.15 4.38 4.95 5.71 N MS27385 MS27385 2.62 MS27383 MS27383 2.82 3.84 4.10 4.68 5.36 1/ Class 2 fittings, styles G through N, are made from c
13、ombination of aluminum and CRES. 2/ For depiction of styles see figure 1. 3/ The HCOF is used in the following calculation to determine the hose length required to produce an assembly of a specific size, style and length: Assembly length - HCOF = Hose length. For example, the hose length required to
14、 produce a 20.50 inch length assembly of size 10, style J is calculated as follows: 20.50 - 2.73 = 17.77. REQUIREMENTS Assembly classification: Class 1 and class 2 hose assemblies, as specified in MIL-DTL-32434, have been incorporated into the Part or Identifying Number (PIN) as a part of styles (se
15、e tables I and II and figure 1). Dimensions: Unless otherwise specified, all dimensions are in inches. Fittings: All fittings shall be qualified in accordance with MIL-DTL-27272. Flareless fitting, hose connector design: If NAS1760 flareless fitting end design is used in place of SAE-AS33514 in hose
16、 assembly design, see MIL-DTL-25579/1 for application and construction. Hose: The hose shall be in accordance with MIL-DTL-32435. Hose size code and elbow drop height: See table III. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32434/2 5 T
17、ABLE III. Size code and elbow fitting drop height. Size Reference tube OD Size code Maximum drop height of elbow fitting (a) 1/ (b) 1/ 3/4 .250 2/ B .452 .761 4 .250 E .444 .745 5 .313 F .468 .828 6 .375 G .546 .935 8 .500 H .642 1.072 10 .625 J .760 1.427 12 .750 K .835 1.661 16Z 1.000 M .889 1.811
18、 20Z 1.250 N .997 2.091 24Z 1.500 P 1.190 2.473 1/ Dimensions (a) and (b) are shown on figure 3. 2/ Size 3/4 hose assembly consists of a size 4 tube OD hose assembled with size 3 tube OD fittings. Assembly length and tolerance: Hose assembly shall be furnished in lengths as specified in the contract
19、 or purchase order (see figure 3); however, tolerances on the length of each hose assembly shall be as follows: a. 1/8 inch for lengths under 18 inches. b. 1/4 inch for lengths from 18 inches to 36 inches. c. 1/2 inch for lengths from 36 inches to 50 inches. d. 1% for lengths over 50 inches. Provide
20、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32434/2 6 NOTES: 1. Hose assembly length “L” shall be measured, with the hose laid out horizontally and straight between the centers of the MS8000 series nipple ends, along a straight line parallel to
21、the hose length (see MIL-DTL-25579/1). 2. See table III for dimensions of (a) and (b). Dimensions (a) and (b) are measured to the end of a MS8000 series style fitting, see MIL-DTL-25579/1. Adjustments should be made for a NAS1760 style fitting. FIGURE 3. Elbow fitting drop height, dimensions (a) and
22、 (b). Angular alignment: Hose assemblies with elbow fittings on each end shall have the angular orientation between the elbows measured counter-clockwise from the centerline of the nearest fitting, positioned at six-oclock, to the centerline of the other fitting (see figure 4). The elbow fitting dro
23、p height shall be as shown on figure 3 and table III. When applicable, the angular alignment shall be expressed in three digits and specified in the PIN. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32434/2 7 NOTE: Angular alignment shall
24、be measured in degrees with a tolerance of 2. FIGURE 4. Measurement of angular alignment between elbow fittings. Protective sleeve: If required, the hose assembly shall include a protective sleeve (see table IV) and its code shall be included in the PIN. TABLE IV. Protective sleeve code. Code Type B
25、lank None A SAE-AS1072 sleeve, fire protection, silicone covered, temperature ranging from -65F to 500F, secured with CRES bands as required. 1/ B SAE-AS1073 - code B sleeve, abrasion protection, heat shrinkable, black polyolefin, temperature ranging from -65F to 250 F. C SAE-AS1291 - code A sleeve,
26、 chafe guard, extruded seamless white PTFE, temperature ranging from -65F to 450F, secured with CRES bands as required. D SAE-AS1291 - code C sleeve, chafe guard, extruded seamless transparent FEP, temperature ranging from -65F to 350F, secured with CRES bands as required. E SAE-AS1298 sleeve, heavy
27、 wall chafe guard, extruded seamless black PTFE, temperature ranging from -65F to 450F, secured with CRES bands as required. L Lock-wire hole F Code A + L G Code B + L H Code C + L J Code D + L K Code E + L 1/ To prevent wicking of fluids, the cut end of the fire protective sleeve (code A) shall be
28、coated with room temperature vulcanized (RTV) silicone rubber prior to installation. After installation, cracks and voids in the fire protective sleeve shall be coated with RTV rubber to prevent exposure of fiberglass. Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
29、nse from IHS-,-,-MIL-DTL-32434/2 8 PIN: The PIN consists of letter M, specification sheet number, hose size code, hose length in inches and an eighths of an inch, hose assembly style, sleeve code, and angular alignment in degree between elbow fittings. M 32434/2 H 08 2 F A 030 PIN example: M32434/2H
30、082FA030 represents inch OD PTFE convoluted hose assembly, 8.25 inches long, flare-to-flange reusable fitting with fire protective sleeve and 30 angular alignment between elbows. Referenced documents. In addition to MIL-DTL-32434, this document references the following: MIL-DTL-27272 MIL-DTL-25579/1
31、 MIL-DTL-32435 MS27385 MS27381 MS27382 MS27383 MS27384 MS8000 NAS1760 SAE-AS1072 SAE-AS1073 SAE-AS1291 SAE-AS1298 SAE-AS33514 Angular alignment between elbow fittings as specified on figure 3 (leave blank for styles A, B, C, G, H, and J). Protective sleeve code (see table IV). Leave blank if not req
32、uired. Style (see table I and figures 1 or 2). Length in eights of an inch. Length in inches. Size code (see table III). Specification sheet number. M Prefix Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32434/2 9 CONCLUDING MATERIAL Custod
33、ians: Preparing activity: Army - AV DLA - CC Navy - AS Air Force - 99 (Project 4720-2012-020) DLA - CC Review activities: Army - AR, AT, EA, MI Navy - MC, SA, SH Air Force - 70 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
