1、 AEROSPACE STANDARD HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO STRAIGHT, METRICMA4624Copyright 2015 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval syste
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3、ae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 1994-05REAFFIRMED2015-04THIRD ANGLE PROJECTION CUSTODIAN: G-3/G-3D FEDERAL SUPPLY CLASS 4720MA4624 SHEET 1 OF 5 PROCUREMENT SPECIFICATION: /2/ MA4623SAE Technical Standards Board Rules provide that: “This report ispublished by SAE toadvance thestate o
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5、ay berevised,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/MA4624 RATIONALE MA4624 HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW
6、 POLICY. FIGURE 1 - FLARELESS HOSE ASSEMBLY, STRAIGHT TO STRAIGHTFIGURE 2AEROSPACE STANDARD MA4624 SHEET 2 OF 5 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO STRAIGHT, METRIC TABLE 1 - ASSEMBLY DIMENSIONS IN MMAEROSP
7、ACE STANDARD MA4624 SHEET 3 OF 5 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO STRAIGHT, METRIC TABLE 2 - HOSE OR SLEEVE OUTSIDE DIAMETERSTABLE 3 - ASSEMBLY PROCUREMENT LENGTH AND TOLERANCESTABLE 4 - MAXIMUM HOSE AND
8、 FITTING WEIGHTSAEROSPACE STANDARD MA4624 SHEET 4 OF 5 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO STRAIGHT, METRIC NOTES:1. MATERIALS:a. HOSE AND FITTINGS - PER MA4623b. THE COLLARS MAY BE STAINLESS STEEL /16/c. S
9、LEEVES - 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 CONTROL SOURCE APPROVAL(S) BY STANDARD PAGE SUPPLEMENT SHEET OR SIMILAR MEANS.3. CONSTRUCTION AND PERFORMANCE PER MA4623. FIT
10、TINGS 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 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
11、 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 ELECTROETCHED ON THE BAND OR ON AN END FITTING OR A FIRESLEEVE CLAMP. MARKING BAND SHALL BE COVERED WITH TRANSPARENT POLYOLEFIN SHRINK
12、SLEEVE PER AS1073 CODE A./6/ HOSE LENGTH: LENGTH “L” IS A FOUR DIGIT NUMBER DESCRIBING THE HOSE ASSEMBLY LENGTH IN MILLIMETERS. LENGTH “L” IS MEASURED FROM “GAGE DIAMETER” TO “GAGE DIAMETER”. FOR LENGTH TOLERANCES SEE TABLE 3. TO CONVERT “GAGE TO GAGE” TO “END TO END” MEASUREMENT, ADD TWO TIMES “D”
13、TO LENGTH “L”. /7/ A TRUE CIRCULAR CROSS SECTION IS NOT REQUIRED THROUGH THE FITTING ID. 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/ FITTING ENDS SIZE -4 TO
14、COMPLY TO 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 DIAMETER TAPE RULE (
15、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 ENDS OF THE FIRESL
16、EEVE 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 FIBERGLASS, SHALL BE
17、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 DOWN 1 STANDARD LETTER SIZE PER TABLE 1 (REDUCED)b. S-HOSE SIZE
18、(NO REDUCTION OR EXPANSION)c. E-STEP UP 1 STANDARD LETTER SIZE PER TABLE 1 (EXPANDED)NOTE: WHEN FITTING SIZE CHANGES EXIST, SPECIFY SMALLER FITTING PRIOR TO THE LARGER FITTING IN THE PART NUMBER./15/ WHEN FIRESLEEVES ARE REQUIRED, WEIGHT LIMITS SHALL BE DEFINED BY THE PROCURING ACTIVITY./16/ TITANIU
19、M PARTS MAY BE REPLACED WITH STAINLESS STEEL IF MAXIMUM WEIGHT FOR FITTING IS NOT EXCEEDED.AEROSPACE STANDARD MA4624 SHEET 5 OF 5 HOSE ASSEMBLY, PTFE, PARA ARAMID REINFORCED, HEAVY-DUTY, 21 000 KPA, 135 C, FLARELESS, TITANIUM FITTINGS, JUMP SIZES, STRAIGHT TO STRAIGHT, METRIC NOTES (Continued):17. D
20、IMENSIONING 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:
