1、 AEROSPACE STANDARD HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUMFITTINGS, JUMP SIZES, 45 TO 90, METRIC MA4628Copyright 2015 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmi
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3、EB ADDRESS: http:/www.sae.org ISSUED 1994-05REAFFIRMED2015-04THIRD ANGLE PROJECTION CUSTODIAN: G-3/G-3D FEDERAL SUPPLY CLASS 4720MA4628 SHEET 1 OF 6 PROCUREMENT SPECIFICATION: /2/ MA4623SAE Technical Standards Board Rules provide that: “This report ispublished by SAE toadvance thestate of technicala
4、ndengineering sciences. Theuse ofthisreport is entirelyvoluntary, andits applicability and suitability forany particularuse,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreport at least every five years at which time itmay berevised
5、,reaffirmed, stabilized, orcancelled. SAE invites yourwrittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/MA4628 RATIONALE MA4628 HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLICY. FIG
6、URE 1 - FLARELESS HOSE ASSEMBLY45 TO 90 ELBOWAEROSPACE STANDARD MA4628 SHEET 2 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, 45 TO 90, METRIC FIGURE 2AEROSPACE STANDARD MA4628 SHEET 3 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID R
7、EINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, 45 TO 90, METRIC TABLE 1 - ASSEMBLY DIMENSIONS IN MMAEROSPACE STANDARD MA4628 SHEET 4 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, 45 TO 9
8、0, METRIC TABLE 2 - HOSE OR SLEEVE OUTSIDE DIAMETERS IN MMAEROSPACE STANDARD MA4628 SHEET 5 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, 45 TO 90, METRIC TABLE 3 - ASSEMBLY PROCUREMENT LENGTH AND TOLERANCESTABLE 4 - MAXIMU
9、M HOSE AND FITTING WEIGHTSNOTES:1. MATERIALS:a. HOSE AND FITTINGS - PER MA4623b. THE COLLARS MAY BE STAINLESS STEEL /15/c. SLEEVES - SEE APPLICABLE STANDARDS, TABLE 2/2/ THIS HOSE ASSEMBLY SHALL BE QUALIFIED IN ACCORDANCE WITH PROCUREMENT SPECIFICATION MA4623. USERS OF THIS STANDARD ARE ADVISED TO C
10、ONTROL SOURCE APPROVAL(S) BY STANDARD PAGE SUPPLEMENT SHEET OR SIMILAR MEANS.3. CONSTRUCTION AND PERFORMANCE: PER MA4623. FITTINGS SHALL BE PERMANENTLY ATTACHED TO THE HOSE.4. OPERATING CHARACTERISTICS: PER MA4623./5/ MARKING: MARKING SHALL BE PER MA4623 ON A STAINLESS STEEL BAND NOT OVER 25.4 mm WI
11、DE OR ON THE COLLAR. THE CHARACTERS SHALL BE A MINIMUM OF 1.6 mm HIGH. THE BAND SHALL BE SO DESIGNED AS TO REMAIN TIGHT ON THE HOSE TO PREVENT RELATIVE MOVEMENT AND RESULTANT CHAFING. IT SHALL BE OF SUFFICIENT STRENGTH TO PREVENT REMOVAL BY HAND. HOSE ASSEMBLY DATE AND “PT” SYMBOL SHALL BE ELECTROET
12、CHED ON THE BAND OR ON AN END FITTING OR A FIRESLEEVE CLAMP. MARKING BAND SHALL BE COVERED WITH TRANSPARENT POLYOLEFIN SHRINK SLEEVE PER AS1073 CODE A./6/ HOSE LENGTH: LENGTH “L” IS A THREE DIGIT NUMBER DESCRIBING THE HOSE ASSEMBLY LENGTH IN MILLIMETERS. LENGTH “L” IS MEASURED FROM “GAGE DIAMETER” T
13、O “GAGE DIAMETER”. FOR LENGTH INCREMENTS AND TOLERANCES, SEE TABLE 3. TO CONVERT “GAGE TO GAGE” TO “END TO END” MEASUREMENT, ADD D1TO LENGTH “L”. AEROSPACE STANDARD MA4628 SHEET 6 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZE
14、S, 45 TO 90, METRIC NOTES (Continued):/7/ A TRUE CIRCULAR CROSS SECTION IS NOT REQUIRED THROUGH THE FITTING I.D. HOWEVER, THE APPLICABLE BALL DIAMETER LISTED IN TABLE 1 MUST BE CAPABLE OF PASSING THROUGH THE HOSE ASSEMBLY./8/ DISTANCE ACROSS CORNERS OF THE COUPLING NUT MAY EXCEED THIS DIMENSION./9/
15、FITTING ENDS TO COMPLY WITH MA2014. FITTINGS SHALL MATE WITH MA2095 AND MA2096. STANDARD COUPLING NUTS SHALL BE IN ACCORDANCE WITH OR EQUIVALENT TO MA2047./10/ CLAMP DIAMETERS: DIAMETERS ARE LISTED FOR CLAMP SELECTION. TUBULAR SLEEVES MAY NOT BE A PERFECT ROUND AND SHALL BE MEASURED WITH A METRIC DI
16、AMETER TAPE RULE (OFTEN REFERRED TO AS A PI-TAPE)./11/ SLEEVE DIAMETERS: THE TABLE 2 SLEEVE DIAMETERS FOR AS1072 SLEEVES APPLY WHEN THE SLEEVE IS COMPRESSED, OR CLAMPED TO CONTACT THE HOSE, IN THIS CASE, A WRINKLE MAY OCCUR OVER APPROXIMATELY 10% OF THE SLEEVE CIRCUMFERENCE./12/ FIRESLEEVE: THE CUT
17、ENDS OF THE FIRESLEEVE SHALL BE COATED WITH RTV SILICONE RUBBER PRIOR TO INSTALLATION TO PREVENT WICKING OF FLUIDS. THE FIRESLEEVE ENDS SHALL BE SECURED TO THE HOSE ASSEMBLY END FITTINGS WITH CORROSION RESISTANT STEEL BANDS. AFTER INSTALLATION, CRACKS OR VOIDS IN THE FIRESLEEVE, WHICH EXPOSE THE FIB
18、ERGLASS, SHALL BE COATED WITH RTV SILICONE RUBBER./13/ IDENTIFICATION MARKING: ADD “AS1055 TYPE IIb CLASS A-S/P” TO IDENTIFICATION MARKING TO SHOW LEVEL OF COMPLIANCE, “FIRE RESISTANT 135 C (5 min), WITH AS1072”./14/ WHEN FIRESLEEVES ARE REQUIRED, WEIGHT LIMITS SHALL BE DEFINED BY THE PROCURING AUTH
19、ORITY./15/ TITANIUM PARTS MAY BE REPLACED WITH STAINLESS STEEL IF MAXIMUM WEIGHT FOR FITTING IS NOT EXCEEDED.16. DIMENSIONING AND TOLERANCING: ANSI Y14.5M17. LOCKWIRE HOLES LOCATION AND DIAMETER PER MA2126 CODED AS FOLLOWS:a. U = TWO HOLES 180 APARTb. W = THREE HOLES 120 APART/18/ THE FITTINGS ORIEN
20、TATION DASH NUMBER IS A THREE DIGIT NUMBER DEFINING THE RELATIVE POSITION OF THE END FITTINGS IN 1 INCREMENTS (EXAMPLE 090 = 90). FITTING ORIENTATION SHALL BE MEASURED COUNTERCLOCKWISE FROM THE NEAREST END FITTING, WHICH SHALL BE IN THE RELATIVE 000 POSITION (SEE FIGURE 2). WHEN END FITTINGS ARE POINTED IN THE SAME DIRECTION, THIS DASH NUMBER SHALL BE 000./19/ THE SHRINK-ON POLYOLEFIN SLEEVE WILL COVER THE ENTIRE HOSE AND A MINIMUM OF 50% OF THE COLLARS ON BOTH ENDS OF THE ASSEMBLY.20. EXAMPLE OF PART NUMBER:
