1、AEROSPACE STANDARD HOSE ASSEMBLY, 3000 psi, PTFE, FLARELESS, STRAIGHT TO STRAIGHT, HEAVYWEIGHTAS621Copyright 2013 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, ph
2、otocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 1984-07REVISED 2001-05 R
3、EAFFIRMED 2013-01THIRD ANGLE PROJECTION CUSTODIAN: G-3/G-3D REV.CFEDERAL SUPPLY CLASS 4720 AS621SHEET 1 OF 5REV. CPROCUREMENT SPECIFICATION: AS604 /2/SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandengineeringsciences.The useofthis r
4、eportisentirelyvoluntary, andits applicability and suitability forany particular use,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreport at least every five years at which time itmay berevised,reaffirmed, stabilized, orcancelled. S
5、AE invites yourwrittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS621CRATIONALE AS621C HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLICY. AEROSPACE STANDARD AS621SHEET 2 OF 5REV.CHO
6、SE ASSEMBLY, 3000 psi, PTFE, FLARELESS, STRAIGHT TO STRAIGHT, HEAVYWEIGHTAEROSPACE STANDARD AS621SHEET 3 OF 5REV.CHOSE ASSEMBLY, 3000 psi, PTFE, FLARELESS, STRAIGHT TO STRAIGHT, HEAVYWEIGHTAEROSPACE STANDARD AS621 SHEET 4 OF 5 REV.C HOSE ASSEMBLY, 3000 psi, PTFE, FLARELESS, STRAIGHT TO STRAIGHT, HEA
7、VYWEIGHT NOTES:1. MATERIALS:a. HOSE AND FITTINGS PER AS604b. SLEEVES - SEE APPLICABLE STANDARD PER TABLE 2/2/ THIS HOSE ASSEMBLY SHALL BE QUALIFIED IN ACCORDANCE WITH PROCUREMENT SPECIFICATION AS604. USERS OF THIS STANDARD ARE ADVISED TO CONTROL SOURCE APPROVAL(S) BY STANDARD PAGE SUPPLEMENT SHEET O
8、R SIMILAR MEANS.CHANGE-OVER FROM USER-QPL TO PRI-QPL SHALL BE PERFORMED IN ACCORDANCE WITH AS604D, AND COMPLETED WITHIN 6 MONTHS FROM THE DATE OF ISSUE OF PRI-QPL-AS604. USERS OF THIS STANDARD SHALL PROCURE THE PRODUCT FROM ACCREDITED MANUFACTURERS, OR THEIR ACCREDITED DISTRIBUTORS, AS LISTED IN THE
9、 PERFORMANCE REVIEW INSTITUTE (PRI) QUALIFIED PRODUCTS LIST OF PRI-QPL-AS604 FOR THIS STANDARD.3. MARKING SHALL BE PER AS604 ON A STAINLESS STEEL BAND NOT OVER 1.0 in WIDE, OR ON THE COLLAR. THE CHARACTERS SHALL BE A MINIMUM OF .06 in HIGH. THE BAND SHALL BE SO DESIGNED AS TO REMAIN TIGHT ON THE HOS
10、E 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 PERMANENTLY MARKED ON THE BAND OR ON AN END FITTING OR A FIRESLEEVE CLAMP.4. CONSTRUCTION AND PERFORMANCE PER AS604. FITTINGS SHALL BE PERM
11、ANENTLY ATTACHED TO THE HOSE./5/ LENGTH “L” IS A FOUR DIGIT NUMBER OF WHICH THE FIRST THREE DIGITS DESCRIBE THE HOSE ASSEMBLY LENGTH IN WHOLE INCHES, AND THE FOURTH DIGIT, THE FRACTION OF AN INCH IN EIGHTHS. LENGTH “L” IS MEASURED FROM “GAGE POINT” TO “GAGE POINT.” FOR LENGTH TOLERANCES SEE TABLE 3.
12、/6/ TO CONVERT “GAGE POINT” TO “GAGE POINT” TO “END TO END” MEASUREMENT, ADD TWO TIMES “D” TO LENGTH “L”./7/ HOSE ASSEMBLY INSIDE DIAMETER SHALL BE VERIFIED BY PASSING THE DESIGNATED, OR LARGER, SPHERICAL BALL PER TABLE 1 THROUGH THE HOSE ASSEMBLY./8/ DISTANCE ACROSS CORNERS OF THE COUPLING NUT MAY
13、EXCEED THIS DIMENSION./9/ STANDARD COUPLING NUTS SHALL BE IN ACCORDANCE WITH AS21921 OR AS4370. NONSTANDARD COUPLING NUTS MAY BE USED, PROVIDED THEY ARE DIMENSIONALLY AND FUNCTIONALLY EQUIVALENT, AND PROVIDED THEY CANNOT BE REMOVED FROM THE FITTING./10/ TUBULAR ABRASION (TFE) SLEEVES SHALL HAVE AN I
14、D NO GREATER THAN HOSE OD + .05 in. AXIAL MOVEMENT OF THE SLEEVE INSTALLED ON THE HOSE SHALL NOT EXCEED .05 in. ENDS OF THE TUBULAR SLEEVE SHALL BE TERMINATED WITH A LENGTH OF AMS-DTL-23053/11 (FEP) CLASS 1 OR 2, COLOR CLEAR, PER TABLE 5 AND FIGURE 2./11/ COIL ABRASION SLEEVES, WHEN ASSEMBLED ON A S
15、TRAIGHT HOSE, SHALL HAVE AN AVERAGE GAP BETWEEN COILS NOT EXCEEDING .05 in. DISPLACEMENT OF THE COILS OF THE SLEEVE, CAUSING A GREATER GAP, SHALL NOT BE CAUSE FOR REJECTION IF THE COILS CAN BE REPOSITIONED TO MEET THE GAP REQUIREMENTS. ENDS OF THE COIL SLEEVE SHALL BE TERMINATED WITH A LENGTH OF HEA
16、T SHRINKABLE SLEEVING IN ACCORDANCE WITH TABLE 5 AND FIGURE 2. CODE “B” (NYLON COIL) ABRASION SLEEVES SHALL BE TERMINATED WITH AMS-DTL-23053/5, CLASS 1 OR 3, COLOR BLACK. CODE “L” (COIL ABRASION) SLEEVES SHALL BE TERMINATED WITH AMS-DTL-23053/12, CLASS I, COLOR TRANSPARENT, PTFE (OPTIONAL AMS-DTL-23
17、053/11 (FEP) CLASS 1 OR 2, COLOR CLEAR)./12/ 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./13/ THE CUT ENDS OF THE FIRESLEEVE SHALL BE COATED W
18、ITH 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 COATED WITH RTV SILI
19、CONE RUBBER./14/ DIAMETERS ARE LISTED FOR CLAMP SELECTION. TUBULAR SLEEVES MAY NOT BE A PERFECT ROUND AND SHALL BE MEASURED WITH A DIAMETER TAPE RULER (OFTEN REFERRED TO AS PI-TAPE)./15/ INTEGRAL ABRASION SLEEVE SHALL FORM AN INTEGRAL, PERMANENT PART OF THE HOSE AND SHALL TERMINATE A MAXIMUM OF .200 in FROM THE END OF THE COLLAR./16/ FEP AND POLYOLEFIN SHRINK ABRASION SLEEVES SHALL BE SHRUNK TO A SNUG FIT OVER THE HOSE AND END FITTING COLLARS.AEROSPACE STANDARD AS621SHEET 5 OF 5REV.CHOSE ASSEMBLY, 3000 psi, PTFE, FLARELESS, STRAIGHT TO STRAIGHT, HEAVYWEIGHT
