1、 AEROSPACE STANDARD HOSE ASSEMBLY, PTFE, ARAMID REINFORCED, STANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS, FLARELESS, 45 TO 90, METRIC MA4571Copyright 2015 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted,
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3、RESS: http:/www.sae.org ISSUED 1994-05REAFFIRMED2015-04THIRD ANGLE PROJECTION CUSTODIAN: G-3/G-3D FEDERAL SUPPLY CLASS 4720MA4571 SHEET 1 OF 8 PROCUREMENT SPECIFICATION: /2/ MA1975SAE Technical Standards Board Rules provide that: “This report ispublished by SAE toadvance thestate of technicalandengi
4、neering 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,reaff
5、irmed, stabilized, orcancelled. SAE invites yourwrittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/MA4571 RATIONALE MA4571 HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLICY. FIGURE 1
6、 FLARELESS HOSE ASSEMBLY45 ELBOW TO 90 ELBOWAEROSPACE STANDARD MA4571 SHEET 2 OF 8 HOSE ASSEMBLY, PTFE, ARAMID REINFORCED, STANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS, FLARELESS, 45 TO 90, METRIC FIGURE 2AEROSPACE STANDARD MA4571 SHEET 3 OF 8 HOSE ASSEMBLY, PTFE, ARAMID REINFORCED, S
7、TANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS, FLARELESS, 45 TO 90, METRIC TABLE 1 - ASSEMBLY DIMENSIONS IN MMAEROSPACE STANDARD MA4571 SHEET 4 OF 8 HOSE ASSEMBLY, PTFE, ARAMID REINFORCED, STANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS, FLARELESS, 45 TO 90, METRIC TABLE 2 - H
8、OSE OR SLEEVE OUTSIDE DIAMETER /10/AEROSPACE STANDARD MA4571 SHEET 5 OF 8 HOSE ASSEMBLY, PTFE, ARAMID REINFORCED, STANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS, FLARELESS, 45 TO 90, METRIC TABLE 3 - ASSEMBLY PROCUREMENT LENGTH AND TOLERANCESAEROSPACE STANDARD MA4571 SHEET 6 OF 8 HOSE AS
9、SEMBLY, PTFE, ARAMID REINFORCED, STANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS, FLARELESS, 45 TO 90, METRIC TABLE 4 - MAXIMUM HOSE AND FITTING WEIGHTSAEROSPACE STANDARD MA4571 SHEET 7 OF 8 HOSE ASSEMBLY, PTFE, ARAMID REINFORCED, STANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS
10、 FLARELESS, 45 TO 90, METRIC NOTES:1. MATERIALS:a. HOSE AND FITTINGS: PER MA1975b. SLEEVES: SEE APPLICABLE STANDARDS, TABLE 2/2/ THIS HOSE ASSEMBLY SHALL BE QUALIFIED IN ACCORDANCE WITH PROCUREMENT SPECIFICATION MA1975. USERS OF THIS STANDARD ARE ADVISED TO CONTROL SOURCE APPROVAL(S) BY STANDARD PA
11、GE SUPPLEMENT SHEET OR SIMILAR MEANS.3. CONSTRUCTION AND PERFORMANCE: PER MA1975. FITTINGS SHALL BE PERMANENTLY ATTACHED TO THE HOSE.4. OPERATING CHARACTERISTICS PER MA1975.5. MARKING SHALL BE PER MA1975 ON A STAINLESS STEEL BAND NOT OVER 25.4 mm WIDE OR ON THE COLLAR. THE CHARACTERS SHALL BE A MINI
12、MUM 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 ELECTROETCHED ON THE BAND OR ON AN END FITTING OR A FIRESLEE
13、VE 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 LENGTH IN MILLIMETERS. LENGTH “L” IS MEASURED FROM “GAGE DIAMETER” TO “GAGE DIAMETER”. FOR LENGTH INCREMENTS AND TOLERANCES SEE
14、TABLE 3. TO CONVERT “GAGE DIAMETER” TO “GAGE DIAMETER” TO “END TO END” MEASUREMENT, ADD “D1” 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/ DISTA
15、NCE ACROSS CORNERS OF THE HEX MAY EXCEED THIS DIMENSION./9/ FITTING ENDS SHALL MATE WITH MA2095 (ISO 7321/2) AND MA2096 (ISO 7321/2). STANDARD COUPLING NUTS SHALL BE IN ACCORDANCE WITH OR EQUIVALENT TO MA2047 (ISO 7321). NUTS SHALL MEET TORQUE REQUIREMENTS PER MA1975./10/ CLAMP DIAMETERS: DIAMETERS
16、ARE LISTED FOR CLAMP SELECTION. TUBULAR SLEEVES MAY NOT BE A PERFECT 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 HO
17、SE. IN THIS CASE, A WRINKLE MAY OCCUR OVER APPROXIMATELY 10% OF THE SLEEVE 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
18、 WITH CORROSION RESISTANT STEEL BANDS. AFTER INSTALLATION, CRACKS OR VOIDS IN THE FIRESLEEVE, WHICH EXPOSE THE FIBERGLASS, SHALL BE COATED WITH RTV SILICONE RUBBER./13/ FIRESLEEVE ENDS: THE END OF THE INTEGRAL FIRESLEEVE SHALL BE COVERED WITH SILICONE EXTENDING OVER THE END FITTING COLLAR.14. IDENTI
19、FICATION MARKING: ADD “AS1055 TYPE Ib CLASS A-S/P” TO IDENTIFICATION MARKING TO SHOW LEVEL OF COMPLIANCE, “FIRE RESISTANT 135 C (5 min), WITH AS1055”./15/ WHEN FIRESLEEVES ARE REQUIRED, WEIGHT LIMITS SHALL BE DEFINED BY THE PROCURING ACTIVITY./16/ TITANIUM PARTS MAY BE REPLACED WITH STAINLESS STEEL
20、IF MAXIMUM WEIGHT FOR FITTING IS NOT EXCEEDED.AEROSPACE STANDARD MA4571 SHEET 8 OF 8 HOSE ASSEMBLY, PTFE, ARAMID REINFORCED, STANDARD DUTY, 21 000/28 000 KPA, 135 C, TITANIUM FITTINGS, FLARELESS, 45 TO 90, METRIC NOTES (Continued):17. DIMENSIONING AND TOLERANCING: ANSI Y14.5M18. THE FITTINGS ORIENTA
21、TION 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. LOCKWIRE HOLES LOCATION AND DIAMETER PER MA2126 CODED AS FOLLOWS:a. U = TWO HOLES 180 APARTb. W = THREE HOLES 120 APART20. THIS PART STANDARD TAKES PRECEDENCE IN CASES OF CONFLICT.21. EXAMPLE OF PART NUMBER:
