1、 AEROSPACE STANDARD HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY,21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO 45, METRIC MA4625Copyright 2015 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or t
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3、 SAE WEB ADDRESS: http:/www.sae.org ISSUED 1994-05REAFFIRMED2015-04THIRD ANGLE PROJECTION CUSTODIAN: G-3/G-3D FEDERAL SUPPLY CLASS 4720MA4625 SHEET 1 OF 6 PROCUREMENT SPECIFICATION: /2/ MA4623SAE Technical Standards Board Rules provide that: “This report ispublished by SAE toadvance thestate of tech
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5、evised,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/MA4625 RATIONALE MA4625 HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLIC
6、Y. FIGURE 1 - FLARELESS HOSE ASSEMBLYSTRAIGHT TO 45 ELBOWAEROSPACE STANDARD MA4625 SHEET 2 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO 45, METRIC FIGURE 2AEROSPACE STANDARD MA4625 SHEET 3 OF 6 HOSE ASSEMBLY, P
7、TFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO 45, METRIC TABLE 1 - ASSEMBLY DIMENSIONS IN MMAEROSPACE STANDARD MA4625 SHEET 4 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTI
8、NGS, JUMP SIZES, STRAIGHT TO 45, METRIC TABLE 2 - HOSE OR SLEEVE OUTSIDE DIAMETERS IN MMTABLE 3 - ASSEMBLY PROCUREMENT LENGTH AND TOLERANCESAEROSPACE STANDARD MA4625 SHEET 5 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STR
9、AIGHT TO 45, METRIC TABLE 4 - MAXIMUM HOSE AND FITTING WEIGHTSNOTES:1. MATERIALS:a. HOSE AND FITTINGS - PER MA4623b. THE COLLARS MAY BE STAINLESS STEEL /16/c. SLEEVES - SEE APPLICABLE STANDARDS, TABLE 2/2/ THIS HOSE ASSEMBLY SHALL BE QUALIFIED IN ACCORDANCE WITH PROCUREMENT SPECIFICATION MA4623. USE
10、RS OF THIS STANDARD ARE ADVISED TO CONTROL 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 STAINL
11、ESS STEEL BAND NOT OVER 25.4 mm WIDE 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
12、AND “PT” SYMBOL SHALL BE ELECTROETCHED 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 FOUR DIGIT NUMBER DESCRIBING THE HOSE ASSEMBLY LENGTH IN MILLIMETERS. LENGTH “L” I
13、S MEASURED FROM “GAGE DIAMETER” TO “GAGE DIAMETER”. FOR LENGTH INCREMENTS AND TOLERANCES SEE TABLE 3. TO CONVERT “GAGE TO GAGE” TO “END TO END” MEASUREMENT, ADD D1AND D2TO LENGTH “L”. /7/ A TRUE CIRCULAR CROSS SECTION IS NOT REQUIRED THROUGH THE FITTING I.D. HOWEVER, THE APPLICABLE BALL DIAMETER LIS
14、TED IN TABLE 1 MUST BE CAPABLE OF PASSING THROUGH THE HOSE ASSEMBLY.AEROSPACE STANDARD MA4625 SHEET 6 OF 6 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO 45, METRIC NOTES (Continued):/8/ DISTANCE ACROSS CORNERS OF THE
15、 COUPLING NUT MAY EXCEED THIS DIMENSION./9/ 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
16、ROUND AND SHALL BE MEASURED WITH A METRIC DIAMETER 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 SL
17、EEVE CIRCUMFERENCE./12/ FIRESLEEVE: THE CUT 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 V
18、OIDS IN THE FIRESLEEVE, WHICH EXPOSE THE FIBERGLASS, 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/ JUMP SIZE CODE EXPLANATION:a. R-STEP DO
19、WN 1 STANDARD LETTER SIZE PER TABLE 1 (REDUCED)b. S-HOSE SIZE (NO REDUCTION OR EXPANSION)c. E-STEP UP 1 STANDARD LETTER SIZE PER TABLE 1 (EXPANDED)NOTE: SPECIFY STRAIGHT FITTING SIZE FOLLOWED BY THE ELBOW FITTING SIZE IN THE PART NUMBER./15/ WHEN FIRESLEEVES ARE REQUIRED, WEIGHT LIMITS SHALL BE DEFI
20、NED BY THE PROCURING AUTHORITY./16/ TITANIUM PARTS MAY BE REPLACED WITH STAINLESS STEEL IF MAXIMUM WEIGHT FOR FITTING IS NOT EXCEEDED.17. DIMENSIONING AND TOLERANCING: ANSI Y14.5M/18/ LOCKWIRE HOLES LOCATION AND DIAMETER PER MA2126 CODED AS FOLLOWS:a. U = TWO HOLES 180 APARTb. W = THREE HOLES 120 APART/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:
